1. WITSML SIG Area of Interest –the definition, movement, and storage of drilling data, information, and knowledge, especially the “right time” seamless flow of well site data between operators and service companies to speed and enhance decision-making. –This group is essentially a cross-vendor, cross-product line user community for drilling applications and data storage products and services. Players –operators, service and software providers, government agencies, consultancies, and POSC.

3. Global acquisition & access of RT drilling data Depth based project data db Timebased drilling data db (Coming soon) RTS service Onshore Operational Centre Anywhere Home Office Source: Statoil

4. Special Interest Group Participants Operators Statoil BP Shell ExxonMobil ChevronTexaco Pioneer Nat. Res. Hydro ONGC Total Regulators UK DTI US DOI Service/Software Suppliers Baker Hughes Landmark/Halliburton/Sperry Schlumberger Sense Technology SDC Geologix Petrolink INT Paradigm UPEG Pason Weatherford OpenSpirit POSC special interest groups are open to all interested parties. Service/Software Suppliers HRH Geological Services Smith Technologies IFP Interaction US Synthetic Knowledge Systems AspenTech Roxar Key Energy Services Seismic Micro Technology M/D Totco Geoservices

5. Bottom Hole Assembly Run Cement Job Conventional Core Fluids Report Formation Marker Log, Well Log (transition) Message Mud Log (updated) Operations Report Real Time (updated) Rig / Rig Equipment Server Capabilities Sidewall Core Subscription Survey Program Target Trajectory & Trajectory Station (updated) Tubular / Bit Record / Open Hole Well Wellbore (update) Wellbore Geometry Risk (new) Completion / Well Mechanical (draft) Regulatory Permitting and Reporting (draft) Production Volumes (draft) Data Objects: Original, New, Updated, Draft

6. WITSML SIG SIG Organization –Steering Committee –Technical Teams Drilling data transfer content Overall architecture / infrastructure –Use Case and Requirements Team Future planning and requirements determination –Implementation Support Team New group forming in ‘05

7. WITSML SIG What’s Next? –Promote use –Continued support and evolution –Create new Implementation Support group –Expand non-Drilling use Completions Production Operations Fluid Properties

8. Alan Doniger POSC Chief Technology Officer 24 Greenway Plaza Suite 1000-B Houston, TX 77046-2401 +1 713 267-5124 phone +1 713 784-9219 fax Doniger@POSC.org http://www.posc.org