1. 1 Global Unique Well Identifier (GUWI) Initiative Progress Report POSC Annual Member Meeting, Houston, 2 November 2005 Authoring Team: John AdamsConocoPhillips Alan DonigerPOSC Kristine Gibbons Shell

2. 2 Outline Background to the activity Steering Team membership Next steps Questions

3. 3 Background Panel discussion on well identifiers at PNEC Data Management Conference (Q2 2003) –Ad hoc group of volunteers agreed to work the issue Authoring team established to document the problem and propose a solution (Q3 2003) Discussion document issued for comment (Q1 2004) Review of feedback with full steering team (Q1 2004) –Due notice taken of similar effort in the AAPG in 1994-5 Direct discussions with Data Vendors (Q2-Q3 2004) Letters of Intent Developed and Issued (Q2-Q3 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 Current 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 (3) ^Letter of Intent Signed (6)

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

7. 7 Next steps Operational Steering Team –Made up of companies that sign the Letter of Intent –First meeting to be held within the next few weeks –Tasks for the Steering Team Distribute and manage service provider Request for Proposals Determine funding, governance development/deployment plans

8. 8 Questions Background to the activity Steering Team membership Next steps Questions