CDA Limited 04/04/2005 POSC Regional SIG Meeting 4 th April, 2005 CDA CS-3 Curve Naming Standard Richard Salway Service Manager, CDA

Slide 2 CDA CS-3 04/04/2005 What is CS-3?  CS-3 is a CDA data standard first developed in the late ’90s for the naming and grouping of digital well log curves on the CDA DataStore  Purpose To be able to uniquely identify and search for all curves.To be able to uniquely identify and search for all curves. To provide a basis for a 'general search facility' using generic curve names.To provide a basis for a 'general search facility' using generic curve names.

Slide 3 CDA CS-3 04/04/2005 Current standard  Applies a generic name to specific ‘high business value’ curves  Determines the criteria of the ‘Online Filter’  Although the second part does work the online filter is now considerably out of date  Generic names are not recorded in the CDA DataStore metadata

Slide 4 CDA CS-3 04/04/2005 What do we want from a new standard  The business drivers have not changed 1.Generic name needed to effect an initial sort on curve lists 2.Consistency of catalogue – PON 9 catalogue compliance, data completeness checking 3.Effective online filter to capture high business value curves

Slide 5 CDA CS-3 04/04/2005 Work Plan  Phase 1 Development of the Standard Agree Data Dictionaries and generic curve typesAgree Data Dictionaries and generic curve types Map existing curve mnemonics to generic curve typesMap existing curve mnemonics to generic curve types Produce an implementation plan for point forward and legacy adoption on the CDA DataStoreProduce an implementation plan for point forward and legacy adoption on the CDA DataStore  Phase 2 Implementation

Slide 6 CDA CS-3 04/04/2005 Detail  Current generic name list  Natural Gamma-Ray  Density  Neutron  Sonic  Resistivity  Inclinometry  Caliper

Slide 7 CDA CS-3 04/04/2005 Detail  Existing data dictionary used is a script applied to loading of data to Recall  Depending upon curve name, the curve service and curve type is generated  We need to add another attribute to this script for Generic Curve Name

Slide 8 CDA CS-3 04/04/2005 Online filter

Slide 9 CDA CS-3 04/04/2005 Updating the online filter  Several sources of data dictionaries have been identified: POSC – PWLSPOSC – PWLS RecallRecall SPWLASPWLA Oil Company dictionariesOil Company dictionaries  Add new mnemonics to existing list and set filter behaviour  How do we cope with legacy?

Slide 10 CDA CS-3 04/04/2005 Other benefits of CS-3  Clean-up of data  Well Log naming Group curves together and give them a meaningful log nameGroup curves together and give them a meaningful log name  Add PON 9 product type code such as LOG_WIRE or LOG_MWD