Practical Well Log Standards Project Status Report

Highlights

• Phase IIa. Phase I scope - old technology tools - proposed list of tools.
• Phase IIb and IIc. Phase II scope - new and old technology tools - proposed list of tools.
• Phase IId. Composited and interpreted curve name proposal.

Topics

• Industry Publication of Company Dictionaries
• Industry Publication of Standard Curve Name Data (Phase I Results)
• Use Cases
• Phase II Focus Areas
• Industry Standard Curve Names

Industry Publication of Company Dictionaries

The target milestone is the deployment of Web-enabled source for well log producer company reference data, sourced from company DLIS dictionaries. Note that DLIS mnemonics are used in both DLIS format files and in files that use other well log formats. Therefore, integrating company dictionaries is relevant to a broad segment of the industry. 

• Companies were asked to provide the non-proprietary portions of their DLIS dictionaries to POSC in their current forms. Baker Hughes and Schlumberger have done so. Halliburton data is still needed. Other suppliers of well log and drilling / mud log data will also be encouraged to add their products.
• POSC analyzed the similarities and differences among the company dictionaries and derived a common format.
• POSC developed and deployed an integrated set of company information on the Web Site for the company data received.

You can find this information at http://www.posc.org/technical/data_exchange/DLISChannelDictionary.html.

Industry Publication of Standard Curve Name Data (PWLS Phase I Results)

The prototype implementation is found at http://spwla.posc.org/pwlsv1/. 

• The prototype interface has been developed. It is believed to be close to meeting the requirements for expert use of an industry dictionary.  
• The data in the prototype will be upgraded to align with the current, corrected Phase I results.
• A "lighter weight" interface will be developed for use by general well log data users. Design and development of the lightweight interface is pending.

Use Cases

Following a review of a draft list of use cases focused largely on the use of generic curve classifications, it was agreed to extend the use cases further. 

• A revised draft is published as an  MS Word file.

Industry Standard Curve Names

Following an analysis of all aspects of the issues surrounding the generic curve classification identifiers known as Property Type and Curve Type, there was a discussion of findings and conclusions at the June Technical Meeting. It was agreed that:

• POSC should poll the well log data consumers to determine which forms of the generic classification were needed and whether the consumers were prepared to fund any ongoing additional maintenance effort. An initial questionnaire was designed and tested. It proved to be too difficult to use. A second simpler questionnaire is being prepared.
• POSC should proceed with the PWLS generic classification development and deployment work (under terms of the proposals above) not waiting for the ultimate resolution of this issue. Ongoing. 
• POSC should be prepared to make a proposal for reducing or eliminating the remaining differences in vocabulary (word use) at such time as it has been agreed that both word-based and mnemonic forms will be maintained based on the results of the user poll. Pending.

Phase II Focus Areas