-<xsd:schema elementFormDefault="qualified" attributeFormDefault="unqualified" targetNamespace="http://www.witsml.org/schemas/1series" version="1.4.1">
<!--
 -->
<!--
 Energistics License Agreement
	This file is distributed under the Energistics License Agreement at
	http://www.energistics.org
	Use of this file constitutes agreement with the Energistics License Agreement.
	Copyright (c) 2011 Energistics. All rights reserved.
	Energistics, WITSML, PRODML and RESQML are trademarks or registered trademarks of Energistics.
 -->
<!--
 -->
 <xsd:include schemaLocation="typ_baseType.xsd"/>
<!--
 -->
-<xsd:annotation>
 <xsd:documentation>WITSML- Catalog of Value Constrainted Types.</xsd:documentation>
 <xsd:appinfo>Modified-in-version=1.4.1, By-issue=W-CR-022, Change=Deleted-type:RealtimeData</xsd:appinfo>
 </xsd:annotation>
<!--
 -->
<!--
 -->
-<xsd:simpleType name="ActivityClassType">
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="planned">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unplanned">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="downtime">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="ActivityCode">
-<xsd:annotation>
 <xsd:documentation>Activity codes. The list of standard values is contained in the WITSML enumValues.xml file. </xsd:documentation>
 </xsd:annotation>
 <xsd:restriction base="witsml:abstractTypeEnum"> </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="AuthorizationStatus">
-<xsd:annotation>
 <xsd:appinfo>Modified-in-version=1.4.0, By-issue=W-CR-008, Change=Added</xsd:appinfo>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="draft">
-<xsd:annotation>
 <xsd:documentation>Not yet approved.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="authorized">
-<xsd:annotation>
 <xsd:documentation>Approved for use.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="superceded">
-<xsd:annotation>
 <xsd:documentation>Obsolete; there is a newer version available.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="withdrawn">
-<xsd:annotation>
 <xsd:documentation>No longer approved in this or any other version.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="AziRef">
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="magnetic north">
-<xsd:annotation>
 <xsd:documentation>The north direction as defined by the magnetic north pole at the time of the measurement. The magnetic north pole is the direction that a magnet will point to when freely rotating.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="grid north">
-<xsd:annotation>
 <xsd:documentation>The north direction is defined by the coordinate grid in the projection coordinate system.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="true north">
-<xsd:annotation>
 <xsd:documentation>The north direction as defined by the true north pole. The true north pole is an average of the actual measured north axis, which is the axis of rotation of the earth.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="BearingType">
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="oil seal">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="mud lube">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="other">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="BitDullCode">
-<xsd:annotation>
 <xsd:documentation>These values represent a classification of a drill bit based on its reason for being declared inoperable, as originally defined by the IADC.</xsd:documentation>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="BC">
-<xsd:annotation>
 <xsd:documentation>Broken Cone</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="BT">
-<xsd:annotation>
 <xsd:documentation>Broken teeth/cutters</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="BU">
-<xsd:annotation>
 <xsd:documentation>Balled Up</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CC">
-<xsd:annotation>
 <xsd:documentation>Cracked Cone</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CD">
-<xsd:annotation>
 <xsd:documentation>Cone Dragged</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CI">
-<xsd:annotation>
 <xsd:documentation>Cone Interference</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CR">
-<xsd:annotation>
 <xsd:documentation>Cored</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CT">
-<xsd:annotation>
 <xsd:documentation>Chipped Teeth</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="ER">
-<xsd:annotation>
 <xsd:documentation>Erosion</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="FC">
-<xsd:annotation>
 <xsd:documentation>Flat Crested Wear</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="HC">
-<xsd:annotation>
 <xsd:documentation>Heat Checking</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="JD">
-<xsd:annotation>
 <xsd:documentation>Junk Damage</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="LC">
-<xsd:annotation>
 <xsd:documentation>Lost Nozzle</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="LN">
-<xsd:annotation>
 <xsd:documentation>Lost Nozzle</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="LT">
-<xsd:annotation>
 <xsd:documentation>Lost Teeth/Cutters</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="NO">
-<xsd:annotation>
 <xsd:documentation>No Dull/No Other Wear</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="OC">
-<xsd:annotation>
 <xsd:documentation>Off-Center Wear</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="PB">
-<xsd:annotation>
 <xsd:documentation>Pinched Bit</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="PN">
-<xsd:annotation>
 <xsd:documentation>Plugged Nozzle</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="RG">
-<xsd:annotation>
 <xsd:documentation>Rounded Gauge</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="RO">
-<xsd:annotation>
 <xsd:documentation>Ring Out</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="SD">
-<xsd:annotation>
 <xsd:documentation>Shirttail Damage</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="SS">
-<xsd:annotation>
 <xsd:documentation>Self-Sharpening Wear</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="TR">
-<xsd:annotation>
 <xsd:documentation>Tracking</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="WO">
-<xsd:annotation>
 <xsd:documentation>WashOut on Bit</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="WT">
-<xsd:annotation>
 <xsd:documentation>Worn Teeth/Cutters</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="BitReasonPulled">
-<xsd:annotation>
 <xsd:documentation>These values represent the reason for pulling a drill bit from the wellbore, as originally defined by the IADC.</xsd:documentation>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="BHA">
-<xsd:annotation>
 <xsd:documentation>Change Bottom Hole Assembly</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CM">
-<xsd:annotation>
 <xsd:documentation>Condition Mud</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CP">
-<xsd:annotation>
 <xsd:documentation>Core Point</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="DMF">
-<xsd:annotation>
 <xsd:documentation>Downhole Motor Failure</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="DP">
-<xsd:annotation>
 <xsd:documentation>Drill Plug</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="DST">
-<xsd:annotation>
 <xsd:documentation>Drill Stem Test</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="DTF">
-<xsd:annotation>
 <xsd:documentation>Downhole Tool Failure</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="FM">
-<xsd:annotation>
 <xsd:documentation>Formation Change</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="HP">
-<xsd:annotation>
 <xsd:documentation>Hole Problems</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="HR">
-<xsd:annotation>
 <xsd:documentation>Hours on Bit</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="LOG">
-<xsd:annotation>
 <xsd:documentation>Run Logs</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="PP">
-<xsd:annotation>
 <xsd:documentation>Pump Pressure</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="PR">
-<xsd:annotation>
 <xsd:documentation>Penetration Rate</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="RIG">
-<xsd:annotation>
 <xsd:documentation>Rig Repairs</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="TD">
-<xsd:annotation>
 <xsd:documentation>Total Depth/Casing Depth</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="TQ">
-<xsd:annotation>
 <xsd:documentation>Torque</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="TW">
-<xsd:annotation>
 <xsd:documentation>Twist Off</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="WC">
-<xsd:annotation>
 <xsd:documentation>Weather Conditions</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="BitType">
-<xsd:annotation>
 <xsd:documentation>These values represent the type of drill/core bit.</xsd:documentation>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="diamond">
-<xsd:annotation>
 <xsd:documentation>Diamond bit</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="diamond core">
-<xsd:annotation>
 <xsd:documentation>Diamond core bit</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="insert roller cone">
-<xsd:annotation>
 <xsd:documentation>Insert roller cone bit</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="PDC">
-<xsd:annotation>
 <xsd:documentation>polycrystalline diamond compact fixed cutter bit</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="PDC core">
-<xsd:annotation>
 <xsd:documentation>polycrystalline diamond compact core bit</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="roller cone">
-<xsd:annotation>
 <xsd:documentation>Milled tooth roller cone bit</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="BhaStatus">
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="final">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="progress">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="plan">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="BladeShapeType">
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="dynamic">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="melon">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="spiral">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="straight">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="variable">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="BladeType">
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="clamp-on">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="integral">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="sleeve">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="welded">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="BopType">
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="annular preventer">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="shear ram">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="blind ram">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="pipe ram">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="drilling spool">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="flexible joint">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="connector">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="BoxPinConfig">
-<xsd:annotation>
 <xsd:documentation>These values represent the type of Box/Pin configuration.</xsd:documentation>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="bottom box, top box">
-<xsd:annotation>
 <xsd:documentation>Bottom box, top box</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="bottom box, top pin">
-<xsd:annotation>
 <xsd:documentation>Bottom box, top pin</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="bottom pin top box">
-<xsd:annotation>
 <xsd:documentation>Bottom pin top box</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="bottom pin">
-<xsd:annotation>
 <xsd:documentation>Bottom pin</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="CementJobType">
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="primary">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="plug">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="squeeze">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="ChangeInfoType">
-<xsd:annotation>
 <xsd:appinfo>Modified-in-version=1.4.0, By-issue=1.3-44, Change=Added</xsd:appinfo>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="add">
-<xsd:annotation>
 <xsd:documentation>An object was added.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="update">
-<xsd:annotation>
 <xsd:documentation>An object was modified.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="delete">
-<xsd:annotation>
 <xsd:documentation>An object was deleted.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="ChronostratigraphyUnit">
-<xsd:annotation>
 <xsd:documentation>Specifies the unit of chronostratigraphy.</xsd:documentation>
 <xsd:appinfo>Modified-in-version=1.4.1, By-issue=W-CR-043, Change=Added</xsd:appinfo>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="era">
-<xsd:annotation>
 <xsd:documentation> Era is the geochronologic equivalent of an erathem. The names of erathems were chosen to reflect major changes of the development of life on the Earth: Paleozoic (old life), Mesozoic (intermediate life), and Cenozoic (recent life). </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="period">
-<xsd:annotation>
 <xsd:documentation> Period is the geochronologic equivalent of a System. A system is a unit of major rank in the conventional chronostratigraphic hierarchy, above a series and below an erathem. The names of currently recognized systems are of diverse origin inherited from early classifications: some indicate chronologic position (Tertiary, Quaternary), others have lithologic connotation (Carboniferous, Cretaceous), others are tribal (Ordovician, Silurian) and still others are geographic (Devonian, Permian). </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="epoch">
-<xsd:annotation>
 <xsd:documentation> Epoch is the geochronologic equivalent of a Series. The names of the currently recognized series are derived from their position within a system: lower, middle, upper. </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="stage">
-<xsd:annotation>
 <xsd:documentation> The stage has been called the basic working unit of chronostratigraphy because it is suited in scope and rank to the practical needs and purposes of intraregional chronostratigraphic classification. A stage is normally the lowest ranking unit in the chronostratigraphic hierarchy that can be recognized on a global scale. </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="ConnectionPosition">
-<xsd:annotation>
 <xsd:documentation>These values represent the position of a connection.</xsd:documentation>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="both">
-<xsd:annotation>
 <xsd:documentation>The connection is the same at both ends of the component</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="bottom">
-<xsd:annotation>
 <xsd:documentation>This connection is only at the bottom of the component</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="top">
-<xsd:annotation>
 <xsd:documentation>This connection is only at the top of the component</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="DeflectionMethod">
-<xsd:annotation>
 <xsd:documentation>These values represent method used to direct the deviation of the trajectory.</xsd:documentation>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="point bit">
-<xsd:annotation>
 <xsd:documentation>Rotary Steerable System that deviates a wellbore by tilting the bit to point it in the desired direction.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="push bit">
-<xsd:annotation>
 <xsd:documentation>Rotary Steerable System that deviates a wellbore by inducing a side force to push the bit in the desired direction.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="DerrickType">
-<xsd:annotation>
 <xsd:documentation>These values represent the type of drilling derrick.</xsd:documentation>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="double">
-<xsd:annotation>
 <xsd:documentation>2 stand capacity derrick</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="quadruple">
-<xsd:annotation>
 <xsd:documentation>4 stand capacity derrick</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="slant">
-<xsd:annotation>
 <xsd:documentation>Slant derrick</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="triple">
-<xsd:annotation>
 <xsd:documentation>3 stand capacity derrick</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="DrawWorksType">
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="mechanical">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="standard electric">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="diesel electric">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="ram rig">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="DriveType">
-<xsd:annotation>
 <xsd:documentation>These values represent the type of work string drive (rotary system).</xsd:documentation>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="coiled tubing">
-<xsd:annotation>
 <xsd:documentation>Coiled tubing rig</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="rotary kelly drive">
-<xsd:annotation>
 <xsd:documentation>Kelly drive system</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="top drive">
-<xsd:annotation>
 <xsd:documentation>Top Drive</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="EastOrWest">
-<xsd:annotation>
 <xsd:appinfo>Modified-in-version=1.4.0, By-issue=1.3.1-15, Change=Added</xsd:appinfo>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="east">
-<xsd:annotation>
 <xsd:documentation>East of something.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="west">
-<xsd:annotation>
 <xsd:documentation>West of something.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="ElevCodeEnum">
-<xsd:annotation>
 <xsd:documentation>The type of local or permanent reference datum for vertical gravity based (i.e., elevation and vertical depth) and measured depth coordinates within the context of a well. This list includes local points (e.g., kelly bushing) used as a datum and vertical reference datums (e.g., mean sea level).</xsd:documentation>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="CF">
-<xsd:annotation>
 <xsd:documentation>casing flange: A flange affixed to the top of the casing string used to attach production equipment.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CV">
-<xsd:annotation>
 <xsd:documentation>crown valve</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="DF">
-<xsd:annotation>
 <xsd:documentation>derrick floor</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="GL">
-<xsd:annotation>
 <xsd:documentation>ground level</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="KB">
-<xsd:annotation>
 <xsd:documentation>kelly bushing</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="RB">
-<xsd:annotation>
 <xsd:documentation>rotary bushing</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="RT">
-<xsd:annotation>
 <xsd:documentation>rotary table</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="SF">
-<xsd:annotation>
 <xsd:documentation>sea floor</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="LAT">
-<xsd:annotation>
 <xsd:documentation>Lowest Astronomical Tide. The lowest tide level over the duration of the National Tidal Datum Epoch (19 years).</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="SL">
-<xsd:annotation>
 <xsd:documentation>Mean Sea Level - A tidal datum. The arithmetic mean of hourly heights observed over the National Tidal Datum Epoch (19 years).</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="MHHW">
-<xsd:annotation>
 <xsd:documentation>Mean Higher High Water - A tidal datum. The average of the higher high water height of each tidal day observed over the National Tidal Datum Epoch (19 years).</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="MHW">
-<xsd:annotation>
 <xsd:documentation>Mean High Water - A tidal datum. The average of all the high water heights observed over the National Tidal Datum Epoch (19 years).</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="MLLW">
-<xsd:annotation>
 <xsd:documentation>Mean Lower Low Water - A tidal datum. The average of the lower low water height of each tidal day observed over the National Tidal Datum Epoch (19 years ).</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="MLW">
-<xsd:annotation>
 <xsd:documentation>Mean Low Water - A tidal datum. The average of all the low water heights observed over the National Tidal Datum Epoch (19 years).</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="MTL">
-<xsd:annotation>
 <xsd:documentation>Mean Tide Level - A tidal datum. The arithmetic mean of mean high water and mean low water. Same as half-tide level.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="KO">
-<xsd:annotation>
 <xsd:documentation>kickoff point</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="Ellipsoid">
-<xsd:annotation>
 <xsd:documentation>These values represent the type of ellipsoid (spheroid) defining geographic or planar coordinates. </xsd:documentation>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="AGD66">
-<xsd:annotation>
 <xsd:documentation>Australian Old</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="AIRY_MOD">
-<xsd:annotation>
 <xsd:documentation>Modified Airy</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="AIRY30">
-<xsd:annotation>
 <xsd:documentation>Airy 1830</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="AIRY49">
-<xsd:annotation>
 <xsd:documentation>Airy 1849</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="AUST_NAT">
-<xsd:annotation>
 <xsd:documentation>Australian National Same as KAU63 and SA69</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="BESL-DHD">
-<xsd:annotation>
 <xsd:documentation>Bessel Modified</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="BESL-NGL">
-<xsd:annotation>
 <xsd:documentation>Bessel - NGO 1948</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="BESL-RT9">
-<xsd:annotation>
 <xsd:documentation>Bessel - RT90</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="BESS41">
-<xsd:annotation>
 <xsd:documentation>Bessel 1841</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="BESSNAM">
-<xsd:annotation>
 <xsd:documentation>Bessel 1841 for Namibia</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="BOGOTA">
-<xsd:annotation>
 <xsd:documentation>BOGOTA (International 1924)</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CL58">
-<xsd:annotation>
 <xsd:documentation>Clarke 1858</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CL58-1">
-<xsd:annotation>
 <xsd:documentation>Clarke 1858-1</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CL66">
-<xsd:annotation>
 <xsd:documentation>Clarke 1866</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CL66-M">
-<xsd:annotation>
 <xsd:documentation>Clarke 1866 for Michigan</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CL80">
-<xsd:annotation>
 <xsd:documentation>Clarke 1880</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CL80-A">
-<xsd:annotation>
 <xsd:documentation>Clarke 1880 variation A</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CL80-B">
-<xsd:annotation>
 <xsd:documentation>Clarke 1880 variation B</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CL80-I">
-<xsd:annotation>
 <xsd:documentation>Clarke 1880 IGN</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CL80-J">
-<xsd:annotation>
 <xsd:documentation>Clarke 1880 for Jamaica</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CL80-M">
-<xsd:annotation>
 <xsd:documentation>Clarke 1880 for Merchich</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CL80-P">
-<xsd:annotation>
 <xsd:documentation>Clarke 1880 for Palestine</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CMPOINCH">
-<xsd:annotation>
 <xsd:documentation>CAMPO INCH (International 1924)</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="DAN">
-<xsd:annotation>
 <xsd:documentation>Danish</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="DELA">
-<xsd:annotation>
 <xsd:documentation>DELAMBRE 1810 </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="ED50">
-<xsd:annotation>
 <xsd:documentation>ED50 (International 1924)</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="EGYPT07">
-<xsd:annotation>
 <xsd:documentation>EGYPT07 (Helmert 1906)</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="EVER">
-<xsd:annotation>
 <xsd:documentation>Everest 1830 - Indian</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="EVER48">
-<xsd:annotation>
 <xsd:documentation>Everest 1948</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="EVER56">
-<xsd:annotation>
 <xsd:documentation>Everest 1956</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="EVER69">
-<xsd:annotation>
 <xsd:documentation>Everest 1969</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="EVER-BR">
-<xsd:annotation>
 <xsd:documentation>Everest Brunei</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="EVERMOD">
-<xsd:annotation>
 <xsd:documentation>Modified Everest</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="EVER-P">
-<xsd:annotation>
 <xsd:documentation>Everest Pakistan</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="EVER-TM">
-<xsd:annotation>
 <xsd:documentation>Everest 1830 (modified) Timbalai</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="EVTM">
-<xsd:annotation>
 <xsd:documentation>Everest - Timbali </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="FISC60">
-<xsd:annotation>
 <xsd:documentation>"Fischer 1960 aka ""Mercury"""</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="FISC60MOD">
-<xsd:annotation>
 <xsd:documentation>Fischer 1960 Modified</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="FISC68">
-<xsd:annotation>
 <xsd:documentation>"Fischer 1968 aka ""Modified Mercury"""</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="FISCMOD">
-<xsd:annotation>
 <xsd:documentation>"Modified Fischer 1960 aka ""South Asia"""</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="GDA94">
-<xsd:annotation>
 <xsd:documentation>GDA94 - Australia</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="GRS67">
-<xsd:annotation>
 <xsd:documentation>Geodetic Reference System 1967</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="GRS80">
-<xsd:annotation>
 <xsd:documentation>Geodetic Reference System 1980</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="HAY09">
-<xsd:annotation>
 <xsd:documentation>Hayford 1909</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="HEIS">
-<xsd:annotation>
 <xsd:documentation>Heiskanen 1929</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="HEL06">
-<xsd:annotation>
 <xsd:documentation>Helmert 1906</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="HEL07">
-<xsd:annotation>
 <xsd:documentation>Helmert 1907 </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="HOUG">
-<xsd:annotation>
 <xsd:documentation>Hough 1956 </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="IAG-75">
-<xsd:annotation>
 <xsd:documentation>IAG 75</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="INDIAN75">
-<xsd:annotation>
 <xsd:documentation>INDIAN75 (Everest 1930)</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="INDO-74">
-<xsd:annotation>
 <xsd:documentation>INDO74 (Indonesian 1974)</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="INT24">
-<xsd:annotation>
 <xsd:documentation>International 1924</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="IUGG67">
-<xsd:annotation>
 <xsd:documentation>IUGG 1967</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="IUGG75">
-<xsd:annotation>
 <xsd:documentation>IUGG 1975</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="JEFF48">
-<xsd:annotation>
 <xsd:documentation>Jeffreys 1948</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="KAU63">
-<xsd:annotation>
 <xsd:documentation>Kaula 1963 Same as AUST_NAT and SA69</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="KRSV">
-<xsd:annotation>
 <xsd:documentation>Krassovsky</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="MERIT83">
-<xsd:annotation>
 <xsd:documentation>MERIT83</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="NAD27">
-<xsd:annotation>
 <xsd:documentation>NAD27 (Clarke 1866)</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="NAHRAN">
-<xsd:annotation>
 <xsd:documentation>NAHRAN (Clarke 1880)</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="NEWINT67">
-<xsd:annotation>
 <xsd:documentation>New International 1967</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="NWL-10D">
-<xsd:annotation>
 <xsd:documentation>NWL 10D</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="NWL-9D">
-<xsd:annotation>
 <xsd:documentation>NWL 9D</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="OSGB36">
-<xsd:annotation>
 <xsd:documentation>OSGB36 (Airy 1830)</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="OSU86F">
-<xsd:annotation>
 <xsd:documentation>OSU86F</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="OSU91A">
-<xsd:annotation>
 <xsd:documentation>OSU91A</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="PLESSIS-1817">
-<xsd:annotation>
 <xsd:documentation>Plessis 1817</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="PSAD56">
-<xsd:annotation>
 <xsd:documentation>PSAD56 (International 1924)</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="PTNOIRE">
-<xsd:annotation>
 <xsd:documentation>Pointe Noire 1948</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="SA69">
-<xsd:annotation>
 <xsd:documentation>South American 1969</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="SPHR">
-<xsd:annotation>
 <xsd:documentation>Sphere of radius 6370997</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="STRU">
-<xsd:annotation>
 <xsd:documentation>Struve 1860</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="WALB">
-<xsd:annotation>
 <xsd:documentation>Walbeck</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="WAR24">
-<xsd:annotation>
 <xsd:documentation>War Office 1924</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="WGS60">
-<xsd:annotation>
 <xsd:documentation>World Geodetic System 1960</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="WGS66">
-<xsd:annotation>
 <xsd:documentation>World Geodetic System 1966</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="WGS72">
-<xsd:annotation>
 <xsd:documentation>World Geodetic System 1972</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="WGS84">
-<xsd:annotation>
 <xsd:documentation>World Geodetic System 1984</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="ErrorTermSource">
-<xsd:annotation>
 <xsd:documentation>The codes for the various classes of error source.</xsd:documentation>
 <xsd:appinfo>Modified-in-version=1.4.0, By-issue=W-CR-008, Change=Added</xsd:appinfo>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="sensor">
-<xsd:annotation>
 <xsd:documentation>Errors arising from sensors in the survey tool </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="azimuth reference">
-<xsd:annotation>
 <xsd:documentation>Errors arising from the adoption of a particular reference azimuth</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="magnetic">
-<xsd:annotation>
 <xsd:documentation>Errors arising from external magnetic field influences</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="alignment">
-<xsd:annotation>
 <xsd:documentation>Errors arising from the attitude of tool relative to borehole</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="misalignment">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="depth">
-<xsd:annotation>
 <xsd:documentation>Errors arising from the measurement of depth </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="reference">
-<xsd:annotation>
 <xsd:documentation>Errors arising from the measurement of depth </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="ErrorPropagationMode">
-<xsd:annotation>
 <xsd:documentation>The codes for the various propagation modes.</xsd:documentation>
 <xsd:appinfo>Modified-in-version=1.4.0, By-issue=W-CR-008, Change=Added</xsd:appinfo>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="B">
-<xsd:annotation>
 <xsd:documentation>Bias</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="R">
-<xsd:annotation>
 <xsd:documentation>Random</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="S">
-<xsd:annotation>
 <xsd:documentation>Systematic</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="W">
-<xsd:annotation>
 <xsd:documentation>Well</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="G">
-<xsd:annotation>
 <xsd:documentation>Global</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="ErrorModelMisalignmentMode">
-<xsd:annotation>
 <xsd:documentation>The enums for the various misalignment maths.</xsd:documentation>
 <xsd:appinfo>Modified-in-version=1.4.0, By-issue=W-CR-008, Change=Added</xsd:appinfo>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="1">
-<xsd:annotation>
 <xsd:documentation>Alternative 1 as described in SPE 90408</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="2">
-<xsd:annotation>
 <xsd:documentation>Alternative 2 as described in SPE 90408</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="3">
-<xsd:annotation>
 <xsd:documentation>Alternative 3 as described in SPE 90408</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="ExtensionName">
-<xsd:annotation>
 <xsd:documentation>The name of a data extension. The list of standard values is contained in the WITSML enumValues.xml file.</xsd:documentation>
 <xsd:appinfo>Modified-in-version=1.4.0, By-issue=1.3.1-71, Change=Added</xsd:appinfo>
 </xsd:annotation>
 <xsd:restriction base="witsml:abstractTypeEnum"/>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="GasPeakType">
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="circulating background gas">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="connection gas">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="drilling background gas">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="drilling gas peak">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="flow check gas">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="no readings">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="other">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="shut down gas">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="trip gas">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="GeodeticDatum">
-<xsd:annotation>
 <xsd:documentation>These values represent the type of geodetic datum. The source (except for "none", "unknown" and "UserDefined") of the values and the descriptions is Geoshare V13.</xsd:documentation>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="ADND">
-<xsd:annotation>
 <xsd:documentation>Adindian ellipsoid=CL80 region="Sudan, Ethiopia"</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="ARC50">
-<xsd:annotation>
 <xsd:documentation>ARC 1950 ellipsoid=CL80B region="Southern Africa"</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="AUSG">
-<xsd:annotation>
 <xsd:documentation>Australian ellipsoid=GRS67 region="Australia Geodetic"</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CAA">
-<xsd:annotation>
 <xsd:documentation>Camp Area Astro ellipsoid=INT24 region=Antarctica </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CHAS">
-<xsd:annotation>
 <xsd:documentation>Chau Astro ellipsoid=INT24 region=Paraguay </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CORAL">
-<xsd:annotation>
 <xsd:documentation>Corrego Alegre ellipsoid=INT24 region=INT24 </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="ED50">
-<xsd:annotation>
 <xsd:documentation>European 1950 ellipsoid=INT24 region="Europe, Middle East, North Africa"</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="ED87">
-<xsd:annotation>
 <xsd:documentation>European 1987 ellipsoid=INT24 region="Europe, Middle East, North Africa"</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="ERIN65">
-<xsd:annotation>
 <xsd:documentation>Ireland 1965 ellipsoid=AIRY_MOD region=Ireland </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="GD49">
-<xsd:annotation>
 <xsd:documentation>Geodetic Datum 1949 ellipsoid=INT24 region="New Zealand"</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="GHANA">
-<xsd:annotation>
 <xsd:documentation>Ghana ellipsoid=WAR24 region=Ghana </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="GUAM63">
-<xsd:annotation>
 <xsd:documentation>Guam 1963 ellipsoid=CL66 region="Marianas Islands"</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="HJRS55">
-<xsd:annotation>
 <xsd:documentation>Hjorsey 1955 ellipsoid=INT24 region=Iceland </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="HTS">
-<xsd:annotation>
 <xsd:documentation>Hu-Tzu-Shan ellipsoid=INT24 region=Taiwan </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="INCH">
-<xsd:annotation>
 <xsd:documentation>Campo Inchauspe ellipsoid=INT24 region=Argentina </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="INDIA1">
-<xsd:annotation>
 <xsd:documentation>Indian 'Kalimpur' ellipsoid=EVER region=India </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="INDIA2">
-<xsd:annotation>
 <xsd:documentation>Indian 'Kalimpur' ellipsoid=INT24 region=India </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="INDNS74">
-<xsd:annotation>
 <xsd:documentation>Indonesia 1974 ellipsoid=GRS67 region=Indonesia </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="LIB64">
-<xsd:annotation>
 <xsd:documentation>Liberia 1964 ellipsoid=CL80 region=Liberia </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="LUZON">
-<xsd:annotation>
 <xsd:documentation>Luzon ellipsoid=CL66 region=Philippines </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="MRCH">
-<xsd:annotation>
 <xsd:documentation>Merchich ellipsoid=CL80A region=Morocco </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="NAD27">
-<xsd:annotation>
 <xsd:documentation>North American 'Meades Ranch' ellipsoid=CL66 region="North America"</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="NAD83">
-<xsd:annotation>
 <xsd:documentation>North American Datum of 1983 ellipsoid=GRS80 region="Canada, Cuba, U.S., Caribbean"</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="NGRA">
-<xsd:annotation>
 <xsd:documentation>Nigeria ellipsoid=CL80 region=Nigeria </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="None">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="NPRM">
-<xsd:annotation>
 <xsd:documentation>Naparima ellipsoid=INT24 region="Trinidad and Tobago"</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="OSGB36">
-<xsd:annotation>
 <xsd:documentation>Ordnance Survey of Great Britain 1936 ellipsoid=AIRY region="Great Britain, Northern Ireland"</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="POTS1">
-<xsd:annotation>
 <xsd:documentation>European 'Pelmert Tower, Potsdam' ellipsoid=INT24 region="Most of Eurasia, Africa"</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="PULK1">
-<xsd:annotation>
 <xsd:documentation>Russian 'Pulkovo' ellipsoid=BESS41 </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="PULK2">
-<xsd:annotation>
 <xsd:documentation>Russian 'Pulkovo' ellipsoid=KRSV </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="QRNQ">
-<xsd:annotation>
 <xsd:documentation>Qornoq ellipsoid=INT24 region=Greenland </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="SA56">
-<xsd:annotation>
 <xsd:documentation>Provisional South American, 1956 ellipsoid=INT24 region="Bolivia, Chile, Colombia, Ecuador, Peru, Venezuela, the Guianas"</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="SRL60">
-<xsd:annotation>
 <xsd:documentation>Sierra Leone 1960 ellipsoid=CL80 region="Sierra Leone"</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="TNRV25">
-<xsd:annotation>
 <xsd:documentation>Tananarive (Antananarivo) Obsv. 1925T ellipsoid=INT24 region="Malagasy Republic"</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="TOKYO">
-<xsd:annotation>
 <xsd:documentation>Tokyo ellipsoid=BESS41 region=Japan</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="UserDefined">
-<xsd:annotation>
 <xsd:documentation>Datum defined elsewhere</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="VROL">
-<xsd:annotation>
 <xsd:documentation>Voirol ellipsoid=CL80 region="Algeria, Tunisia"</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="WGS72">
-<xsd:annotation>
 <xsd:documentation>World Geodetic System 1972 ellipsoid=WGS72</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="WGS84">
-<xsd:annotation>
 <xsd:documentation>World Geodetic System 1984 ellipsoid=WGS84 region="Sino-Soviet Bloc, SW Asia, Hydrographic, Aeronautical"</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="YACR">
-<xsd:annotation>
 <xsd:documentation>Yacare ellipsoid=INT24 region=Uruguay</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="Hemispheres">
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="northern">
-<xsd:annotation>
 <xsd:documentation>Northern hemisphere.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="southern">
-<xsd:annotation>
 <xsd:documentation>Southern hemisphere.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="HoleCasingType">
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="blow out preventer">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="casing">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="conductor">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="curved conductor">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="liner">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="open hole">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="riser">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="tubing">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="HoleOpenerType">
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="under-reamer">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="fixed blade">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="InnerBarrelType">
-<xsd:annotation>
 <xsd:appinfo>Modified-in-version=1.4.0, By-issue=1.3.1-33, Change=Added</xsd:appinfo>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="undifferented">
-<xsd:annotation>
 <xsd:documentation>A pipe that is located inside a core barrel to hold the core sample.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="aluminum">
-<xsd:annotation>
 <xsd:documentation>An inner core barrel made of aluminium.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="gel">
-<xsd:annotation>
 <xsd:documentation>An inner core barrel that that seals off the core sample using gel as the sealing material.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="fiberglass">
-<xsd:annotation>
 <xsd:documentation>An inner core barrel made of glass fiber reinforced plastic.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="ItemState">
-<xsd:annotation>
 <xsd:documentation>These values represent the state of a WITSML object. </xsd:documentation>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="actual">
-<xsd:annotation>
 <xsd:documentation>Actual data measured or entered at the well site.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="model">
-<xsd:annotation>
 <xsd:documentation>Model data used for "what if" calculations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="plan">
-<xsd:annotation>
 <xsd:documentation>A planned object. That is, one which is expected to be executed in the future.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="JarType">
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="mechanical">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="hydraulic">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="hydro mechanical">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="JarAction">
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="up">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="down">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="both">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="vibrating">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="LithologySource">
-<xsd:annotation>
 <xsd:documentation>Specifies the source of lithology information.</xsd:documentation>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="interpreted">
-<xsd:annotation>
 <xsd:documentation>The lithology has one overall interpretation based on several sources such as logs and cuttings or cores.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="core">
-<xsd:annotation>
 <xsd:documentation>The lithology as based on a visual inspection of the core. A percentage is commonly assigned to each portion of the lithology.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="cuttings">
-<xsd:annotation>
 <xsd:documentation>The lithology as based on a visual inspection of the cuttings. A percentage is commonly assigned to each portion of the lithology.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="LithologyType">
-<xsd:annotation>
 <xsd:documentation>The type of lithology. The list of standard values is contained in the WITSML enumValues.xml file. </xsd:documentation>
 </xsd:annotation>
 <xsd:restriction base="witsml:abstractTypeEnum"> </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="LithostratigraphyUnit">
-<xsd:annotation>
 <xsd:documentation>Specifies the unit of lithostratigraphy.</xsd:documentation>
 <xsd:appinfo>Modified-in-version=1.4.1, By-issue=W-CR-043, Change=Added</xsd:appinfo>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="group">
-<xsd:annotation>
 <xsd:documentation> A succession of two or more contiguous or associated formations with significant and diagnostic lithologic properties in common. Formations need not be aggregated into groups unless doing so provides a useful means of simplifying stratigraphic classification in certain regions or certain intervals. Thickness of a stratigraphic succession is not a valid reason for defining a unit as a group rather than a formation. The component formations of a group need not be everywhere the same. </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="formation">
-<xsd:annotation>
 <xsd:documentation> The primary formal unit of lithostratigraphic classification. Formations are the only formal lithostratigraphic units into which the stratigraphic column everywhere should be divided completely on the basis of lithology. The contrast in lithology between formations required to justify their establishment varies with the complexity of the geology of a region and the detail needed for geologic mapping and to work out its geologic history. No formation is considered justifiable and useful that cannot be delineated at the scale of geologic mapping practiced in the region. The thickness of formations may range from less than a meter to several thousand meters. </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="member">
-<xsd:annotation>
 <xsd:documentation> The formal lithostratigraphic unit next in rank below a formation. It possesses lithologic properties distinguishing it from adjacent parts of the formation. No fixed standard is required for the extent and thickness of a member. A formation need not be divided into members unless a useful purpose is thus served. Some formations may be completely divided into members; others may have only certain parts designated as members. A member may extend from one formation to another. </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="bed">
-<xsd:annotation>
 <xsd:documentation> The smallest formal unit in the hierarchy of sedimentary lithostratigraphic units, e.g. a single stratum lithologically distinguishable from other layers above and below. Customarily only distinctive beds (key beds, marker beds) particularly useful for stratigraphic purposes are given proper names and considered formal lithostratigraphic units. </xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="LogDataType">
-<xsd:annotation>
 <xsd:documentation>The endcoding allowed in a log curve value.</xsd:documentation>
 <xsd:appinfo>Modified-in-version=1.4.1, By-issue=W-CR-025, Change=Modified-description</xsd:appinfo>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="byte">
-<xsd:annotation>
 <xsd:documentation>Integer data value (nominally a one byte value). The value must conform to format of the xsd:dateTime data type (minInclusive=-128 and maxInclusive=127).</xsd:documentation>
 <xsd:appinfo>Modified-in-version=1.4.0, By-issue=1.3.1-74, Change=Added</xsd:appinfo>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="date time">
-<xsd:annotation>
 <xsd:documentation>Date with time data value. The value must conform to format of the xsd:dateTime data type.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="double">
-<xsd:annotation>
 <xsd:documentation>Double precision floating point value (nominally an 8 byte value). The value must conform to format of the xsd:double data type.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="float">
-<xsd:annotation>
 <xsd:documentation>Single precision floating point value (nominally an 4 byte value). The value must conform to format of the xsd:float data type.</xsd:documentation>
 <xsd:appinfo>Modified-in-version=1.4.0, By-issue=1.3.1-74, Change=Added</xsd:appinfo>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="int">
-<xsd:annotation>
 <xsd:documentation>Integer data value (nominally an 4 byte value). The value must conform to format of the xsd:int data type.</xsd:documentation>
 <xsd:appinfo>Modified-in-version=1.4.0, By-issue=1.3.1-74, Change=Added</xsd:appinfo>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="long">
-<xsd:annotation>
 <xsd:documentation>Long integer data value (nominally an 8 byte value). The value must conform to format of the xsd:long data type.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="short">
-<xsd:annotation>
 <xsd:documentation>Integer data value (nominally an 2 byte value). The value must conform to format of the xsd:short data type (minInclusive=-32768 and maxInclusive=32767).</xsd:documentation>
 <xsd:appinfo>Modified-in-version=1.4.0, By-issue=1.3.1-74, Change=Added</xsd:appinfo>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="string">
-<xsd:annotation>
 <xsd:documentation>Character string data. The value must conform to format of the xsd:string data type. The maximum length of a value is server dependent.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="string40">
-<xsd:annotation>
 <xsd:documentation>Character string data with a maximum length of 40 characters. The value must conform to format of the xsd:string data type.</xsd:documentation>
 <xsd:appinfo>Modified-in-version=1.4.0, By-issue=1.3.1-74, Change=Added</xsd:appinfo>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="string16">
-<xsd:annotation>
 <xsd:documentation>Character string data with a maximum length of 16 characters. The value must conform to format of the xsd:string data type.</xsd:documentation>
 <xsd:appinfo>Modified-in-version=1.4.0, By-issue=1.3.1-74, Change=Added</xsd:appinfo>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="LogIndexDirection">
-<xsd:annotation>
 <xsd:documentation>These values represent the direction of movement within a wellbore.</xsd:documentation>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="decreasing">
-<xsd:annotation>
 <xsd:documentation>Log items are in order of decreasing index values (e.g. wireline log logging while pulling out of hole)</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="increasing">
-<xsd:annotation>
 <xsd:documentation>Log items are in order of increasing index values (e.g. increasing depths or times)</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="LogIndexType">
-<xsd:annotation>
 <xsd:documentation>These values represent the type of data used as an index value for a log. </xsd:documentation>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="date time">
-<xsd:annotation>
 <xsd:documentation>Log is indexed on date with time.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="elapsed time">
-<xsd:annotation>
 <xsd:documentation>Log is indexed on time.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="length">
-<xsd:annotation>
 <xsd:documentation>Log is indexed on length (not a depth).</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="measured depth">
-<xsd:annotation>
 <xsd:documentation>Log index is a measured depth index.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="vertical depth">
-<xsd:annotation>
 <xsd:documentation>Log index is a vertical depth depth index .</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="other">
-<xsd:annotation>
 <xsd:documentation>Any other index type for a log.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="LogTraceOrigin">
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="realtime">
-<xsd:annotation>
 <xsd:documentation>The data were read from a realtime sensor stream.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="modeled">
-<xsd:annotation>
 <xsd:documentation>The data are synthetic.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="LogTraceState">
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="depth adjusted">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="edited">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="joined">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="processed">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="raw">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="MaterialType">
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="aluminum">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="beryllium copper">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="chrome alloy">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="composite">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="other">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="non-magnetic steel">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="plastic">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="steel">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="steel alloy">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="titanium">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="unknown">
-<xsd:annotation>
 <xsd:documentation>The value is not known. This value should not be used in normal situations. All reasonable attempts should be made to determine the appropriate value. Use of this value may result in rejection in some situations.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
 </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="MatrixCementType">
-<xsd:annotation>
 <xsd:documentation>Lithology matrix/cement description. The list of standard values is contained in the WITSML enumValues.xml file. </xsd:documentation>
 <xsd:appinfo>Modified-in-version=1.4.1, By-issue=W-CR-043, Change=Added</xsd:appinfo>
 </xsd:annotation>
 <xsd:restriction base="witsml:abstractTypeEnum"> </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="MeasureClass">
-<xsd:annotation>
 <xsd:documentation>Measure class values. The list of standard values is contained in the WITSML enumValues.xml file. </xsd:documentation>
 <xsd:appinfo>Modified-in-version=1.4.0, By-issue=1.3.1-78, Change=Added</xsd:appinfo>
 </xsd:annotation>
 <xsd:restriction base="witsml:abstractTypeEnum"> </xsd:restriction>
 </xsd:simpleType>
<!--
 -->
-<xsd:simpleType name="MeasurementType">
-<xsd:annotation>
 <xsd:documentation>The source (except for "CH density porosity", "CH neutron porosity", "OH density porosity" and "OH neutron porosity") of the values and the descriptions is the POSC V2.2 "well log trace class" standard instance values which are documented as "A classification of well log traces based on specification of a range of characteristics. Traces may be classed according to the type of physical characteristic they are meant to measure."</xsd:documentation>
 </xsd:annotation>
-<xsd:restriction base="witsml:abstractTypeEnum">
-<xsd:enumeration value="acceleration">
-<xsd:annotation>
 <xsd:documentation>Output from an accelerometer on a logging tool.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="acoustic caliper">
-<xsd:annotation>
 <xsd:documentation>A well log which uses an acoustic device to measure hole diameter.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="acoustic casing collar locator">
-<xsd:annotation>
 <xsd:documentation>The signal measured by an acoustic device at the location of casing collars and other features (e.g., perforations).</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="acoustic impedance">
-<xsd:annotation>
 <xsd:documentation>Seismic velocity multiplied by density.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="acoustic porosity">
-<xsd:annotation>
 <xsd:documentation>Porosity calculated from an acoustic log.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="acoustic velocity">
-<xsd:annotation>
 <xsd:documentation>The velocity of an acoustic wave.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="acoustic wave matrix travel time">
-<xsd:annotation>
 <xsd:documentation>The time it takes for an acoustic wave to traverse a fixed distance of a given material or matrix. In this case the material or matrix is a specific, zero porosity rock, e.g. sandstone, limestone or dolomite.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="acoustic wave travel time">
-<xsd:annotation>
 <xsd:documentation>The time it takes for an acoustic wave to traverse a fixed distance.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="amplitude">
-<xsd:annotation>
 <xsd:documentation>Any measurement of the maximum departure of a wave from an average value.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="amplitude of acoustic wave">
-<xsd:annotation>
 <xsd:documentation>The extent of departure of an acoustic wave measured from the mean position.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="amplitude of E-M wave">
-<xsd:annotation>
 <xsd:documentation>The extent of departure of an electromagnetic wave measured from the mean position.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="amplitude ratio">
-<xsd:annotation>
 <xsd:documentation>The ratio of two amplitudes.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="area">
-<xsd:annotation>
 <xsd:documentation>A particular extent of space or surface.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="attenuation">
-<xsd:annotation>
 <xsd:documentation>The amount of reduction in the amplitude of a wave.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="attenuation of acoustic wave">
-<xsd:annotation>
 <xsd:documentation>The amount of reduction in the amplitude of an acoustic wave.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="attenuation of E-M wave">
-<xsd:annotation>
 <xsd:documentation>The amount of reduction in the amplitude of an electromagnetic wave.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="auxiliary">
-<xsd:annotation>
 <xsd:documentation>A general classification for measurements which are very specialized and not normally accessed by petrophysicists.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="average porosity">
-<xsd:annotation>
 <xsd:documentation>The pore volume of a rock averaged using various well log or core porosity measurements.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="azimuth">
-<xsd:annotation>
 <xsd:documentation>In the horizontal plane, it is the clockwise angle of departure from magnetic north (while looking down hole).</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="barite mud correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of barite in the borehole fluid.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="bed thickness correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for bed thickness effects.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="bit size">
-<xsd:annotation>
 <xsd:documentation>The diameter of the drill bit used to drill the hole.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="blocked">
-<xsd:annotation>
 <xsd:documentation>A well log trace which has been edited to reflect sharp bed boundaries. The trace has a square wave appearance.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="borehole environment correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of the borehole environment; e.g., borehole size.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="borehole fluid composition correction">
-<xsd:annotation>
 <xsd:documentation>Deprecated. Use mud composition correction.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="borehole fluid correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of borehole fluid; e.g., a mud cake correction.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="borehole size correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of borehole size.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="bromide mud correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of bromide in the borehole fluid.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="bulk compressibility">
-<xsd:annotation>
 <xsd:documentation>The relative compressibility of a material.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="bulk density">
-<xsd:annotation>
 <xsd:documentation>The measured density of a rock with the pore volume filled with fluid. The pore fluid is generally assumed to be water.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="bulk volume">
-<xsd:annotation>
 <xsd:documentation>A quantity per unit volume.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="bulk volume gas">
-<xsd:annotation>
 <xsd:documentation>The quantity of gas present in a unit volume of rock. The product of gas saturation and total porosity.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="bulk volume hydrocarbon">
-<xsd:annotation>
 <xsd:documentation>The quantity of hydrocarbon present in a unit volume of rock. The product of hydrocarbon saturation and total porosity.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="bulk volume oil">
-<xsd:annotation>
 <xsd:documentation>The quantity of oil present in a unit volume of rock. The product of oil saturation and total porosity.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="bulk volume water">
-<xsd:annotation>
 <xsd:documentation>The quantity of formation water present in a unit volume of rock. The product of water saturation and total porosity.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="C/O ratio">
-<xsd:annotation>
 <xsd:documentation>The ratio of the Carbon measurement to the Oxygen measurement.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="caliper">
-<xsd:annotation>
 <xsd:documentation>A well log used to record hole diameter (open or cased).</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="cased hole correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of being recorded in a cased hole; e.g., corrected for casing weight and thickness.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="casing collar locator">
-<xsd:annotation>
 <xsd:documentation>The signal measured by a device at the location of casing collars and other features (e.g., perforations).</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="casing correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of casing; this includes things such as casing weight, thickness and diameter.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="casing diameter correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of casing diameter.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="casing inspection">
-<xsd:annotation>
 <xsd:documentation>Any of the measurements made for the purpose of determining the properties of the well casing.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="casing thickness correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of casing thickness.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="casing weight correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of casing weight.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="cement correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of the cement surrounding the casing; this includes cement thickness, density and type.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="cement density correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of cement density.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="cement evaluation">
-<xsd:annotation>
 <xsd:documentation>Any of the measurements made to determine the presence and quality of the cement bond to casing or to formation.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="cement thickness correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of cement thickness.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="cement type correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of the type of cement used.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CH density porosity">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CH dolomite density porosity">
-<xsd:annotation>
 <xsd:documentation>Porosity calculated from the bulk density measurement of a cased hole density log using a dolomite matrix density.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CH dolomite neutron porosity">
-<xsd:annotation>
 <xsd:documentation>Porosity calculated from a cased hole neutron log using a dolomite matrix.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CH limestone density porosity">
-<xsd:annotation>
 <xsd:documentation>Porosity calculated from the bulk density measurement of a cased hole density log using a limestone matrix density.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CH limestone neutron porosity">
-<xsd:annotation>
 <xsd:documentation>Porosity calculated from a cased hole neutron log using a limestone matrix.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CH neutron porosity">
-<xsd:annotation>
 <xsd:documentation/>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CH sandstone density porosity">
-<xsd:annotation>
 <xsd:documentation>Porosity calculated from the bulk density measurement of a cased hole density log using a sandstone matrix density.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="CH sandstone neutron porosity">
-<xsd:annotation>
 <xsd:documentation>Porosity calculated from an open hole neutron log using a sandstone matrix.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="compressional wave dolomite porosity">
-<xsd:annotation>
 <xsd:documentation>Porosity calculated from a compressional wave acoustic log using a dolomite matrix.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="compressional wave limestone porosity">
-<xsd:annotation>
 <xsd:documentation>Porosity calculated from a compressional wave acoustic log using a limestone matrix</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="compressional wave matrix travel time">
-<xsd:annotation>
 <xsd:documentation>The time it takes for a compressional acoustic wave to traverse a fixed distance of a given material or matrix. In this case the material or matrix is a specific, zero porosity rock, e.g. sandstone, limestone or dolomite.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="compressional wave sandstone porosity">
-<xsd:annotation>
 <xsd:documentation>Porosity calculated from a compressional wave acoustic log using a sandstone matrix.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="compressional wave travel time">
-<xsd:annotation>
 <xsd:documentation>The time it takes for a compressional acoustic wave to traverse a fixed distance.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="conductivity">
-<xsd:annotation>
 <xsd:documentation>The property of a medium (solid or fluid) which allows the medium to conduct a form of energy; e.g., electrical conductivity or thermal conductivity.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="conductivity from attenuation">
-<xsd:annotation>
 <xsd:documentation>Conductivity calculated from the attenuation of an electromagnetic wave. Generally recorded from a LWD resistivity tool.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="conductivity from phase shift">
-<xsd:annotation>
 <xsd:documentation>Conductivity calculated from the phase shift of an electromagnetic wave. Generally recorded from a LWD resistivity tool.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="connate water conductivity">
-<xsd:annotation>
 <xsd:documentation>The conductivity of the water entrapped in the interstices of the rock.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="connate water resistivity">
-<xsd:annotation>
 <xsd:documentation>The resistivity of the water entrapped in the interstices of the rock.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="conventional core porosity">
-<xsd:annotation>
 <xsd:documentation>Porosity from a measurement made on a conventional core.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="core matrix density">
-<xsd:annotation>
 <xsd:documentation>The density of a rock matrix measured on a core sample.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="core permeability">
-<xsd:annotation>
 <xsd:documentation>The permeability derived from a core.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="core porosity">
-<xsd:annotation>
 <xsd:documentation>Porosity from a core measurement.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="corrected">
-<xsd:annotation>
 <xsd:documentation>A trace which has had corrections applied; e.g. environmental corrections.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="count rate">
-<xsd:annotation>
 <xsd:documentation>The rate of occurrences; e.g. the far counts from a density tool..</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="count rate ratio">
-<xsd:annotation>
 <xsd:documentation>The ratio of two count rates.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="cross plot porosity">
-<xsd:annotation>
 <xsd:documentation>The pore volume of a rock calculated from cross plotting two or more well log porosity measurements.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="decay time">
-<xsd:annotation>
 <xsd:documentation>The time it takes for a population to decay, generally expressed as a half life.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="deep conductivity">
-<xsd:annotation>
 <xsd:documentation>The conductivity which represents a measurement made several feet into the formation; generally considered a measurement of the undisturbed formation.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="deep induction conductivity">
-<xsd:annotation>
 <xsd:documentation>The conductivity, measured by an induction log, which represents a measurement made several feet into the formation; generally considered a measurement of the undisturbed formation.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="deep induction resistivity">
-<xsd:annotation>
 <xsd:documentation>The resistivity, measured by an induction log, which represents a measurement made several feet into the formation; generally considered a measurement of the undisturbed formation.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="deep laterolog conductivity">
-<xsd:annotation>
 <xsd:documentation>The conductivity, measured by a laterolog, which represents a measurement made several feet into the formation; generally considered a measurement of the undisturbed formation.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="deep laterolog resistivity">
-<xsd:annotation>
 <xsd:documentation>The resistivity, measured by a laterolog, which represents a measurement made several feet into the formation; generally considered a measurement of the undisturbed formation.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="deep resistivity">
-<xsd:annotation>
 <xsd:documentation>The resistivity which represents a measurement made several feet into the formation; generally considered a measurement of the undisturbed formation.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="density">
-<xsd:annotation>
 <xsd:documentation>Mass per unit Volume - well logging units are usually gm/cc.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="density porosity">
-<xsd:annotation>
 <xsd:documentation>Porosity calculated using the bulk density measurement from a density log.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="depth">
-<xsd:annotation>
 <xsd:documentation>The distance to a point in a wellbore.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="depth adjusted">
-<xsd:annotation>
 <xsd:documentation>The process of depth correcting a trace by depth matching it to a reference trace.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="depth derived from velocity">
-<xsd:annotation>
 <xsd:documentation>The depth calculated from velocity information.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="deviation">
-<xsd:annotation>
 <xsd:documentation>Departure of a borehole from vertical. Also, the angle measured between the tool axis and vertical.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="dielectric">
-<xsd:annotation>
 <xsd:documentation>Relative permittivity.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="diffusion correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of diffusion.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="dip">
-<xsd:annotation>
 <xsd:documentation>The angle that a structural surface, e.g. a bedding or fault plane, makes with the horizontal, measured perpendicular to the strike of the structure.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="dipmeter">
-<xsd:annotation>
 <xsd:documentation>Any of a number of measurements produced by a tool designed to measure formation dip and borehole characteristics through direct and indirect measurements.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="dipmeter conductivity">
-<xsd:annotation>
 <xsd:documentation>The conductivity, measured by a dipmeter, which represents a measurement made approximately one to two feet into the formation; generally considered to measure the formation where it contains fluids which are comprised primarily of mud filtrate.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="dipmeter resistivity">
-<xsd:annotation>
 <xsd:documentation>The resistivity, measured by a dipmeter, which represents a measurement made approximately one to two feet into the formation; generally considered to measure the formation where it contains fluids which are comprised primarily of mud filtrate.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="dolomite acoustic porosity">
-<xsd:annotation>
 <xsd:documentation>Porosity calculated from an acoustic log using a dolomite matrix.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="dolomite density porosity">
-<xsd:annotation>
 <xsd:documentation>Porosity calculated from the bulk density measurement of a density log using a dolomite matrix density.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="dolomite neutron porosity">
-<xsd:annotation>
 <xsd:documentation>Porosity calculated from a neutron log using a dolomite matrix.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="edited">
-<xsd:annotation>
 <xsd:documentation>A well log trace which has been corrected or adjusted through an editing process.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="effective porosity">
-<xsd:annotation>
 <xsd:documentation>The interconnected pore volume occupied by free fluids.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="electric current">
-<xsd:annotation>
 <xsd:documentation>The flow of electric charge.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="electric potential">
-<xsd:annotation>
 <xsd:documentation>The difference in electrical energy between two systems.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="electromagnetic wave matrix travel time">
-<xsd:annotation>
 <xsd:documentation>The time it takes for an electromagnetic wave to traverse a fixed distance of a given material or matrix. In this case the material or matrix is a specific, zero porosity rock, e.g. sandstone, limestone or dolomite.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="electromagnetic wave travel time">
-<xsd:annotation>
 <xsd:documentation>The time it takes for an electromagnetic wave to traverse a fixed distance.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="element">
-<xsd:annotation>
 <xsd:documentation>The elemental composition, generally in weight percent, of a formation as calculated from information obtained from a geochemical logging pass; e.g., weight percent of Al, Si, Ca, Fe, etc.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="elemental ratio">
-<xsd:annotation>
 <xsd:documentation>The ratio of two different elemental measurements; e.g. K/U.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="enhanced">
-<xsd:annotation>
 <xsd:documentation>A well log trace which has been filtered to improve its value; e.g. inverse filtering for better resolution.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="filtered">
-<xsd:annotation>
 <xsd:documentation>A well log trace which has had a filter applied to it.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="flowmeter">
-<xsd:annotation>
 <xsd:documentation>A logging tool to measure the rate and/or direction of fluid flow in a wellbore.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="fluid density">
-<xsd:annotation>
 <xsd:documentation>The quantity per unit volume of fluid.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="fluid velocity">
-<xsd:annotation>
 <xsd:documentation>The velocity of a flowing fluid.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="fluid viscosity">
-<xsd:annotation>
 <xsd:documentation>The amount of a fluid resistance to flow.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="flushed zone conductivity">
-<xsd:annotation>
 <xsd:documentation>The conductivity of the zone immediately behind the mud cake and which is considered to be flushed by mud filtrate, i.e., it is considered to have all mobile formation fluids displaced from it.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="flushed zone resistivity">
-<xsd:annotation>
 <xsd:documentation>The resistivity of the zone immediately behind the mud cake and which is considered to be flushed by mud filtrate, i.e., it is considered to have all mobile formation fluids displaced from it.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="flushed zone saturation">
-<xsd:annotation>
 <xsd:documentation>The fraction or percentage of pore volume of rock occupied by drilling mud or mud filtrate in the flushed zone.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="force">
-<xsd:annotation>
 <xsd:documentation>Energy exerted or brought to bear.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="formation density correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for formation density effects.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="formation properties correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for formation properties; e.g., salinity.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="formation salinity correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the salinity effects from the water in the formation.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="formation saturation correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for formation saturation effects.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="formation volume factor correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of the hydrocarbon formation volume factor.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="formation water density correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of the density of the formation water.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="formation water saturation correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for water saturation effects.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="free fluid index">
-<xsd:annotation>
 <xsd:documentation>The percent of the bulk volume occupied by fluids which are free to flow as measured by the nuclear magnetism log.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="friction effect correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of friction.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="gamma ray">
-<xsd:annotation>
 <xsd:documentation>The measurement of naturally occurring Gamma Ray radiation being released by radioisotopes in clay or other minerals in the formation.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="gamma ray minus uranium">
-<xsd:annotation>
 <xsd:documentation>The measurement of the naturally occurring gamma radiation less the radiation attributed to uranium.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="gas saturation">
-<xsd:annotation>
 <xsd:documentation>The fraction or percentage of pore volume of rock occupied by gas.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="gradiomanometer">
-<xsd:annotation>
 <xsd:documentation>The measurement of the average density of fluids in a wellbore.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="high frequency conductivity">
-<xsd:annotation>
 <xsd:documentation>A measurement of the conductivity of the formation, by a high frequency electromagnetic tool, within the first few cubic inches of the borehole wall.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="high frequency electromagnetic">
-<xsd:annotation>
 <xsd:documentation>High frequency electromagnetic measurements, e.g. from a dielectric logging tool.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="high frequency electromagnetic porosity">
-<xsd:annotation>
 <xsd:documentation>Porosity calculated using a high frequency electromagnetic measurement as input.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="high frequency E-M phase shift">
-<xsd:annotation>
 <xsd:documentation>The amount of change in the phase of a high frequency electromagnetic wave.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="high frequency resistivity">
-<xsd:annotation>
 <xsd:documentation> A measurement of the resistivity of the formation, by a high frequency electromagnetic tool, within the first few cubic inches of the borehole wall.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="hydrocarbon correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of hydrocarbons.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="hydrocarbon density correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of hydrocarbon density.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="hydrocarbon gravity correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of hydrocarbon gravity.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="hydrocarbon saturation">
-<xsd:annotation>
 <xsd:documentation>The fraction or percentage of pore volume of rock occupied by hydrocarbon.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="hydrocarbon viscosity correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of hydrocarbon viscosity.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="image">
-<xsd:annotation>
 <xsd:documentation>The likeness of an object produced by an electrical device.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="interpretation variable">
-<xsd:annotation>
 <xsd:documentation>A variable in a well log interpretation equation.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="iron mud correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of iron in the borehole fluid.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="joined">
-<xsd:annotation>
 <xsd:documentation>A well log trace which has had two or more runs spliced together to make a single trace.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="KCl mud correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of KCl in the borehole fluid.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="length">
-<xsd:annotation>
 <xsd:documentation>A measured distance or dimension.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="limestone acoustic porosity">
-<xsd:annotation>
 <xsd:documentation>Porosity calculated from an acoustic log using a limestone matrix.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="limestone density porosity">
-<xsd:annotation>
 <xsd:documentation>Porosity calculated from the bulk density measurement of a density log using a limestone matrix density.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="limestone neutron porosity">
-<xsd:annotation>
 <xsd:documentation>Porosity calculated from a neutron log using a limestone matrix.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="lithology correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for lithology effects.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="log derived permeability">
-<xsd:annotation>
 <xsd:documentation>The permeability derived from a well log.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="log matrix density">
-<xsd:annotation>
 <xsd:documentation>The density of a rock matrix used with, or derived from, the bulk density from a well log. The matrix is assumed to have zero porosity.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="magnetic casing collar locator">
-<xsd:annotation>
 <xsd:documentation>The signal measured by a magnetic device at the location of casing collars and other features (e.g., perforations).</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="matrix density">
-<xsd:annotation>
 <xsd:documentation>The density of a rock matrix. In this case, the matrix is assumed to have zero porosity.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="matrix travel time">
-<xsd:annotation>
 <xsd:documentation>The time it takes for an electromagnetic or acoustic wave to traverse a fixed distance of a given material or matrix. In this case the material or matrix is a specific, zero porosity rock, e.g. sandstone, limestone or dolomite.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="measured depth">
-<xsd:annotation>
 <xsd:documentation>The distance measured along the path of a wellbore.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="mechanical caliper">
-<xsd:annotation>
 <xsd:documentation>A well log which uses a mechanical device to measure hole diameter.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="mechanical casing collar locator">
-<xsd:annotation>
 <xsd:documentation>The signal measured by a mechanical device at the location of casing collars and other features (e.g., perforations).</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="medium conductivity">
-<xsd:annotation>
 <xsd:documentation>The conductivity which represents a measurement made approximately two to three feet into the formation; generally considered to measure the formation where it contain fluids which are a mixture of mud filtrate, connate water and possibly hydrocarbons.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="medium induction conductivity">
-<xsd:annotation>
 <xsd:documentation> The conductivity, made by an induction log, which represents a measurement made approximately two to three feet into the formation.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="medium induction resistivity">
-<xsd:annotation>
 <xsd:documentation>The resistivity, made by an induction log, which represents a measurement made approximately two to three feet into the formation.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="medium laterolog conductivity">
-<xsd:annotation>
 <xsd:documentation>The conductivity, measured by a laterolog, which represents a measurement made approximately two to three feet into the formation.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="medium laterolog resistivity">
-<xsd:annotation>
 <xsd:documentation>The resistivity, measured by a laterolog, which represents a measurement made approximately two to three feet into the formation.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="medium resistivity">
-<xsd:annotation>
 <xsd:documentation>The resistivity which represents a measurement made approximately two to three feet into the formation; generally considered to measure the formation where it contain fluids which are a mixture of mud filtrate, connate water and possibly hydrocarbons.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="micro conductivity">
-<xsd:annotation>
 <xsd:documentation>A measurement of the conductivity of the formation within the first few cubic inches of the borehole wall.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="micro inverse conductivity">
-<xsd:annotation>
 <xsd:documentation>A conductivity measurement made by a micro log tool which measures within the first few cubic inches of the borehole wall.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="micro inverse resistivity">
-<xsd:annotation>
 <xsd:documentation>A resistivity measurement made by a micro log tool which measures within the first few cubic inches of the borehole wall.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="micro laterolog conductivity">
-<xsd:annotation>
 <xsd:documentation>A measurement of the conductivity of the formation, by a laterolog, within the first few cubic inches of the borehole wall.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="micro laterolog resistivity">
-<xsd:annotation>
 <xsd:documentation>A measurement of the resistivity of the formation, by a laterolog, within the first few cubic inches of the borehole wall.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="micro normal conductivity">
-<xsd:annotation>
 <xsd:documentation>A conductivity measurement made by a micro log tool which measures within the first few cubic inches of the borehole wall.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="micro normal resistivity">
-<xsd:annotation>
 <xsd:documentation>A resistivity measurement made by a micro log tool which measures within the first few cubic inches of the borehole wall.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="micro resistivity">
-<xsd:annotation>
 <xsd:documentation>A measurement of the resistivity of the formation within the first few cubic inches of the borehole wall.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="micro spherically focused conductivity">
-<xsd:annotation>
 <xsd:documentation>A measurement of the conductivity of the formation, by a spherically focused tool, within the first few cubic inches of the borehole wall.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="micro spherically focused resistivity">
-<xsd:annotation>
 <xsd:documentation>A measurement of the resistivity of the formation, by a spherically focused tool, within the first few cubic inches of the borehole wall.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="mineral">
-<xsd:annotation>
 <xsd:documentation>The mineral composition, generally in weight percent, of a formation as calculated from elemental information obtained from a geochemical logging pass; e.g., weight percent of dolomite, calcite, illite, quartzite, etc.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="mud cake conductivity">
-<xsd:annotation>
 <xsd:documentation>The conductivity of the filter cake, the residue deposited on the borehole wall as mud loses filtrate into porous and permeable rock.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="mud cake correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of mud cake; e.g., mud cake thickness and/or density.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="mud cake density correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of mud cake density.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="mud cake resistivity">
-<xsd:annotation>
 <xsd:documentation>The resistivity of the filter cake, the residue deposited on the borehole wall as mud loses filtrate into porous and permeable rock.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="mud cake resistivity correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of mud cake resistivity.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="mud cake thickness correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of mud cake thickness.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="mud composition correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of borehole fluid composition; e.g., a correction for KCl in the borehole fluid.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="mud conductivity">
-<xsd:annotation>
 <xsd:documentation> The conductivity of the continuous phase liquid used for the drilling of the well.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="mud filtrate conductivity">
-<xsd:annotation>
 <xsd:documentation>The conductivity of the effluent of the continuous phase liquid of the drilling mud which permeates porous and permeable rock.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="mud filtrate correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of mud filtrate. This includes things such as filtrate salinity.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="mud filtrate density correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of mud filtrate density.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="mud filtrate resistivity">
-<xsd:annotation>
 <xsd:documentation>The resistivity of the effluent of the continuous phase liquid of the drilling mud which permeates porous and permeable rock.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="mud filtrate resistivity correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of mud filtrate resistivity.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="mud filtrate salinity correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of mud filtrate salinity.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="mud resistivity">
-<xsd:annotation>
 <xsd:documentation>The resistivity of the continuous phase liquid used for the drilling of the well.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="mud salinity correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of salinity in the borehole fluid.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="mud viscosity correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of the viscosity of the borehole fluid.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="mud weight correction">
-<xsd:annotation>
 <xsd:documentation>A trace which has been corrected for the effects of weighting the borehole fluid.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="neutron die away time">
-<xsd:annotation>
 <xsd:documentation>The time it takes for a neutron population to die away to half value.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="neutron porosity">
-<xsd:annotation>
 <xsd:documentation>Porosity from a neutron log.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="nuclear caliper">
-<xsd:annotation>
 <xsd:documentation>A well log which uses a nuclear device to measure hole diameter.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="nuclear magnetic decay time">
-<xsd:annotation>
 <xsd:documentation>The decay time of a nuclear magnetic signal.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="nuclear magnetism log permeability">
-<xsd:annotation>
 <xsd:documentation>The permeability derived from a nuclear magnetism log.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="nuclear magnetism porosity">
-<xsd:annotation>
 <xsd:documentation>Porosity calculated using the measurements from a nuclear magnetism logging pass.</xsd:documentation>
 </xsd:annotation>
 </xsd:enumeration>
-<xsd:enumeration value="OH density porosity">
-<xsd:annotation