1. 1 Global Unique Well Identifier (GUWI) Initiative Progress Report POSC DSS SIG Meetings, March and June 2006 Authoring Team: John AdamsConocoPhillips Alan DonigerPOSC Kristine Gibbons Shell

2. 2 Outline Background to the activity 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) Direct discussions with Data Vendors (Summer-Autumn 2004) Letter of Intent issued (March 2005) / received (Fall 2005)

4. 4 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

5. 5 Steering Team Members A2D 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 * Tobin Martin Schardt US DOI Chris Gaudry Wood Mackenzie Charles Mitchell * authoring team member

6. 6 Conceptual Work Flow Query Request Registration Request Host: POSC Sponsors Steering Group Well Identity Service

7. 7 Letter of Intent - 2005 Letter of Intent –Steering Committee: LOI signees or designated representatives –Conference call to review discussions w/ interested service providers pending Signed letters received in 2005: –British Petroleum –Burlington Resources (ConocoPhillips) –ExxonMobil –Marathon –Shell –POSC

8. 8 IHS Webcast (early 2006) IHS Presentation to selected customers: –Reviewed an increased service provision from the original AAPG initiative (which Petroconsultants agreed to provide in 1996) –Input from participants included a request from an operator to see a formal, official declaration of service provision outlining the increased service/improvements in cooperation with the GUWI initiative.

9. 9 2006 Team Work Operational Steering Team –Made up of companies that sign the Letter of Intent –Active engagement with data vendors to explore feasible solution paths –Decided in Q2 to endorse seeking agreement with IHS Energy following agreed draft letter of intent, including ability to leverage current data set as basis for industry standard and population of global public data set –Forming permanent Work Group –Establish legal framework funding and service agreements, governance and operational procedures –Promote usage

10. 10 IHS Energy User Group Announcement May 19, 2006 Houston

11. 11 Questions Background to the activity Current activities Next steps Questions