Geosciences group Organization

Organization of reservoir engineering tasks The too many shortcuts taken by BEOC in their basic evaluations, and the absence of any decent task schedule, show that the Reservoir Engineering group is presently understaffed and struggles to cope with the daily operational duties. It is generally accepted for significant operations such as the BEOC work program that operations and studies cannot be validly carried out by the same people. Proposal: – A team dedicated to operations – A team dedicated to reservoir studies – Ahead of both Operations and Studies, a pivot team composed of the reservoir & production engineering manager assisted by one database technician

reservoir engineering operations A team dedicated to operations is deemed necessary before the next offshore drilling campaign starts: at least two professionals, composed of one senior reservoir engineer and one or two juniors, responsible for operations follow-up, planning, data acquisition such as perforating, well testing, pressure recordings, production logging (design + implementation)

reservoir engineering studies A team dedicated to reservoir studies, reservoir issues of well proposals, also to performance prediction and reservoir monitoring & management: at least four professionals, composed of one reservoir modeling expert (Fevzi Gumrah) and three junior engineers

reservoir engineering management Ahead of both Operations and Studies, a pivot team composed of the reservoir & production engineering manager assisted by one database technician with strong IT background, in charge of updating and maintaining the production database and various reservoir softwares

Organization of Geological and geophysical tasks In terms of organization a clear distinction must be made between G&G professionals dealing with operations and the ones dealing with studies. It is highly probable that today everybody is working on operations. This will be even worse in the near future with the increase of drilling activity and writing of final geological reports. When an organization chart showing those two branches with names and seniority/résumés of everybody is provided, BTT is prepared to provide comments and suggestions to improve/recruit. Normally, senior and most reliable/autonomous personnel should be in the study group.

Three branches A team dedicated to Operation Geology A team dedicated to Geophysics A team dedicated to Production Geology

Operation Geology Regarding the operations, the Division head must at minimum – have standards for Drilling proposals (they probably have one) and for final geological reports at least – Have a time table showing the expected dates of spud/completion of wells and giving for each well The deadlines for (1) Drilling prognosis diffusion to partners (30 days before spud?) (2) Final geological report diffusion to partners (30 days after final log?) The name of the person (from the study group) responsible to issue those documents in time for each well

Geophysics Geophysics: Seismic cannot play its major role in supporting production geology and reservoir engineering activities: definition of accumulations and drilling target definitions, or blocks boundaries and reservoir imaging, or 2P, 3P and prospective reserves. These last ones will not be defined and efficiently evaluated (drilled) without a 3D support. BEOC needs a geophysical arm to manage acquisition first and supervise and coordinate all relevant activities including processing and interpretation.

Production Geology Studies Perform a quality control of the well tops reliability/anomalies. Checking/correcting structure map of each of the 13 main horizons for well location or directional surveys, for example, Perform a qualitative well log analysis in terms of lithology, fluids, and contacts. Lithology will be sand, possible sand, shale. Fluid will be oil, possible oil, possible water, water. Contacts will be ODT, OWC, and WUT. Correlate reservoirs, provide geological model to reconcile measured productions and reservoir pressures, etc. Such studies will most probably take more than two years. Consequently, given the necessary input from G&G, in the near future, for well location and prognosis, the work will start in focused sectors of the fields (i.e. specific projects such as Island area, P2 – block 7 area, BE-8/10 project, 208a/209 project…)

Production Geologists – In terms of personnel, a minimum of 2 senior, experienced, autonomous, creative geologists are required to carry this work full time – They will work in close, constant cooperation. A planning starting as described just above and extending tentatively until end 2013 will be prepared and presented to BEOC management ASAP. It will show what is the area expected to be completed by end It has to be a commitment to deliver from the G&G division so that they trust the added value of their specialists and waste no more time and money playing darts all year long.