1. WITSML Use Cases April 2005 Workflow Priorities

2. Use case priorities Review from Paris mtng Daily Drilling Reports – defer till current applications implementations mature. Needs import and Export capability) Completions / Well Mechanical objects Chevron and BP interest. Danny and MK to work (Wellheads ?) Chevron and BP interest. Danny and MK to work (Wellheads ?) Extensions and enhancements Priorities ? Priorities ? Test server and test data set by Operators Test server and test data set by Operators HSE data (EEMES ?) + POB info (IDS proposal) HSE data (EEMES ?) + POB info (IDS proposal) Need to fix time issue for moving between time zones.

3. New areas of workflow interest Well interventions and Well Services Well stimulation (Including new construction ?) Frac, OHGP, FracPack, Acid treatments etc. Well stimulation (Including new construction ?) Frac, OHGP, FracPack, Acid treatments etc. Well Service rig daily reporting (Typically includes more tabular data than in a Daily drilling report) Well Service rig daily reporting (Typically includes more tabular data than in a Daily drilling report) Pason and Key To lead with model samples in 1.3 format Pason and Key To lead with model samples in 1.3 format

4. Profiles Operators to work together on Server Profiles for contract wording on detail of required deliverables for specific projects. Try to develop standard layout for contractual wording on implementation requirements

5. Data Management discussion How can WITSML enabled stuff live in an overall data management environment ? What are the boundaries of Transfer to Data Management in the standard What are the boundaries of Transfer to Data Management in the standard Need for tag ID’s, both physical tag ID’s (RFID on BHA etc.) and data object tags (Creator and time stamp) Need to change format in the future, needed technical team for some issues Stability for 1.3.x ? Yes. No big issues currently out there.