Publications

The Sunda basin, North West Java formed as a result of several half-graben fault episodes. This basin has proven recoverable oil reserves from several fields, Karmila is one such. The Karmila field is located approximately 90 km Northwest of Jakarta in the Java Sea. This field was first discovered in 1983 through Karmila-1 exploration well, and produces from Talang Akar sands. Hydrocarbon accumulations occur in the SS-44 reservoir complex, controlled mainly structure and lithology. 3D facies model was generated by using seismic data, 32 wells data and 390 ft of core data. This field has a mixed load channel facies characteristics with cross bedding sedimentary structure is observed in core data. Deterministic and probabilistic Truncated Gaussian Simulation method was used in the study, because its capability to improve the facies distribution model in faulted areas. Based on the probabilistic and seismic attribute analysis, it is possible to predict the reservoir distribution and differentiate favorable zones for production. Geometry of SS-44 reservoir facies distribution in Karmila field is Northwest-Southeast trending. Porosity modeling helped to confirm the 3D facies model in this study. The purpose of this study is develop an accurate reservoir model that can be used to indentified undrained oil prospects.