Publications

Tunu is a giant gas and condensate field (Mahakam Delta, Indonesia), delivering 1100 MMSCFD gas and 23000 bpd of condensate, with over 800 wells drilled and almost 20 years of production history. Continued depletion, the presence of a few thousand stacked independent gas reservoirs, over-pressured zones and water rise risk are the main uncertainties to manage for optimization of future well development programs. TEPI has implemented several tools that change the way reservoir engineers and geologists communicate, using the same interface to visualize and share the same database for static and dynamic data and interpretations, in a project with a massive field operational activity (70 new wells per year and more than 700 well interventions). The “Live Model” interface project consists of the deterministic mapping of channel, depositional environments, Reservoir Pressure Unit limit, fluid contacts and water rise risk, shale scars, etc, to facilitate the updating of geological concepts and the integration in the geological model of the intensive drilling and monitoring results. An original methodology of production allocation adapted to the high number of reservoirs and monitoring uncertainties have been developed to integrate production sources with geological correlations and pressure data input. Results are confronted with depositional and sequence stratigraphic framework in the Geomodel. This workflow gives a useful insight into the water rise risk and the quality of the connection between reservoirs per geological area (from well connected to isolated reservoirs zones). * TOTAL E&P INDONESIE This integrated workflow allows constant update and rapid quality check of an enormous amount of data. With a direct impact on daily operations and cost savings, allowing the team of the asset to improve the new targets definition, well architecture and improve the perforation efficiency leading to continued high gas delivery rates.