1. 1 Global Unique Well Identifier (GUWI) Initiative Progress Report POSC SIG, Aberdeen, 4 April 2005 Authoring Team: John AdamsConocoPhillips Alan DonigerPOSC Kris GibbonsShell

2. 2 Outline Background to the activity Steering Team membership Vendor discussions Steering Team decisions Current activities Next steps Questions

3. 3 Background Panel discussion on well identifiers at PNEC Data Management Conference (May 2003) –Ad hoc group of volunteers agreed to work the issue Authoring team established to document the problem and propose a solution (July 2003) Discussion document issued for comment (Feb 2004) Review of feedback with full steering team (March 2004)

4. 4 Current Steering Team Members A2D Richard Herman BP Richard Miller Burlington Resources Chris Troyer ChevronTexaco Yaw Adu ConocoPhillips John Adams * Deloitte Graham Sadler ExxonMobil Mike Mischler Fugro-Robertson Simon Kendall IHS Energy Melissa Manning Marathon Damon Simmons Nexen Pat Ryan POSC Alan Doniger * Shell Kris Gibbons * Scott Woolcock * Tobin Martin Schardt US DOI Chris Gaudry Wood Mackenzie Charles Mitchell * authoring team member

5. 5 Benefits Direct cost savings –Replace dedicated in-house wellbore identification management with a shared service funded by E&P industry Indirect cost savings –Reduce instances of re-doing work after well/wellbore identity problem is discovered –Simplify data integration of vendor/partner data –Improve efficiency of Acquisition and Disposition activities

6. 6 AAPG Initiative Request for Proposal issued by AAPG (Jan 1995) Key features of World Wide Well Number RFP: –Universal access at nominal cost –AAPG to maintain copyright and oversee administration –No group would be denied access to unique well numbers and basic identifying well data –AAPG reserved right to change vendors Recommendation to adopt the Petroconsultants (now IHSE) unique well identifier (AAPG Explorer, July 1996) –The service was initiated and is operational Service does not meet all RFP requirements e.g. universal access, copyright –Some IHSE clients are registering wells Limited adoption after eight years of operation

7. 7 Background Industry feedback from POSC regional meetings –Stavanger (June), Houston (November) Discussions with data vendors as potential service providers (July/August 2004) Steering team meeting to review results of vendor discussions (Sept 2004) –Key decisions on data access and data release

8. 8 Service Provider Discussions Provide information on scope and objectives of the Global Unique Well identifier initiative Understand the activities of each service provider with regard to international well data Identify any issues that they have with the proposal Establish their interest in being considered as a potential operator of a well identifier service

9. 9 Vendor Feedback 1 IHSE –IHSE have been issuing international UWI’s for clients when requested –Would be prepared to promote the existing UWI service more actively and include other E&P entities (seismic, fields) Fugro Robertson –Fully support the aims of the GUWI team as a means of improving data exchange –Would consider operating the GUWI service and are willing to contribute their data set as a basis for such a service

10. 10 Vendor Feedback 2 Deloitte & Touche –Would respond to an RFP for running the UWI service if invited –Would contribute their data set to complete the UWI list if all other vendors agreed to do the same Wood Mackenzie –Interested in maintaining an awareness of the activity

11. 11 Outline Background to the activity Steering Team membership Vendor discussions Steering Team decisions Current activities Next steps Questions

12. 12 Steering Team Discussion Data Access The Authoring Team asserted that universal access to the basic well attributes is critical to the success of the well identifier initiative –Available to all industry participants (operators, service companies, consultants, academic researchers) on a non- proprietary basis Did the full Steering Team agree that any proposed GUWI solution should have universal access as a fundamental requirement? –Operator representatives plus others: Yes! –Other feedback: 3 rd party operation and industry group oversight are important

13. 13 Steering Team Discussion Data Release The Authoring Team asserted that contribution of basic well data by operating companies is a critical success factor Did the full Steering Team believe that their companies would agree to release basic international well attribute data in support of the global UWI initiative? –Including: well name, operator, country, surface location –Operator representatives: Contribution of operator-owned data would be acceptable

14. 14 Steering Team Discussion Agreed next steps Contact major operating companies to obtain a formal Letter of Intent to release basic well data Prepare and issue a Request for Proposal (RFP) for contractual provision of a Global UWI service

15. 15 Letter of Intent Request for a formal statement of support –Participate in establishment, population and use –Work with other participants to define and agree on details –Prepared to provide basic well data for operated wells outside North America Distributed to 11 international E&P operators (Mar 2005) –Majors and independents with international operations –Responses due by 31 May

16. 16 Request for Proposal Requirements Wellbore registration processes –single well and bulk requests Initial population strategies Quality control and conflict resolution processes Maintaining an audit trail of changes Maintain translations to commonly used existing well identification systems (e.g. CDA, Diskos) Managing security for tight wells Web access for querying of the data

17. 17 Conceptual Work Flow Query Request Registration Request Host: POSC Sponsors Steering Group Well Identity Service

18. 18 Next steps Letter of Intent –Respond to questions from current LOI recipients –Consider second phase to National Oil Companies and Regulatory Authorities Request for Proposals –Distribute RFP invitations once sufficient Letters of Intent have been received Establishment of the Service –Evolve to Steering Group  negotiate  contract  start-up

19. 19 Questions Background to the activity Steering Team membership Vendor discussions Steering Team decisions Current activities Next steps Questions