-<xsd:schema elementFormDefault="qualified" attributeFormDefault="unqualified" targetNamespace="http://www.prodml.org/schemas/1series" version="PRODML_v1.3">
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<!--
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	This file is distributed under the Energistics License Agreement at
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	Use of this file constitutes agreement with the Energistics License Agreement.
	Copyright (c) 2014 Energistics. All rights reserved.
	Energistics, WITSML, PRODML and RESQML are trademarks or registered trademarks of Energistics.
	
 -->
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 <xsd:include schemaLocation="cs_wellTestTestVolume.xsd"/>
 <xsd:include schemaLocation="cs_wellTestFluidRate.xsd"/>
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-<xsd:complexType name="cs_wellTestWellheadData">
-<xsd:annotation>
 <xsd:documentation>Basic measurements at the wellhead, during the well test.</xsd:documentation>
 </xsd:annotation>
-<xsd:sequence>
-<xsd:element name="temperature" type="prodml:thermodynamicTemperatureMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>The temperature measured at the wellhead during the well test.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="flowingPressure" type="prodml:pressureMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>The flowing pressure measured at the wellhead during the well test.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="shutInPressure" type="prodml:pressureMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>The shut-in pressure measured at the wellhead during the well test.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="flowLinePressure" type="prodml:pressureMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>The pressure measured at the flow line connected to the wellhead during this well test.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="chokeOrificeSize" type="prodml:lengthMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>The size of the choke opening at the wellhead.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="gasLiftPres" type="prodml:pressureMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>The pressure of the lift gas at the wellhead.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="gasLiftTemp" type="prodml:thermodynamicTemperatureMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>The temperature of the lift gas at the wellhead.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="gasLiftVolume" type="prodml:cs_wellTestTestVolume" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Lift gas volumes injected during the well test at the wellhead.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="gasLiftRate" type="prodml:cs_wellTestFluidRate" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>Lift gas rates injected during the well test at the wellhead.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
-<xsd:element name="gasLiftchokeOrificeSize" type="prodml:lengthMeasure" minOccurs="0" maxOccurs="1">
-<xsd:annotation>
 <xsd:documentation>The size of the gas lift choke opening.</xsd:documentation>
 </xsd:annotation>
 </xsd:element>
 </xsd:sequence>
 </xsd:complexType>
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 </xsd:schema>