A Novel Approach to Chasing the West Balingian Miocene Channelized Reservoir in the R Field Offshore of Sarawak

Abstract The R Field, located within the Balingian Province offshore Sarawak, comprises a complex Miocene channelized reservoir system. Initial exploration success was followed by subsequent appraisal wells encountering less favorable sand thicknesses. To address this challenge, a comprehensive geological modeling approach was employed to characterize the reservoir’s spatial distribution and identify optimal well locations. The methodology involved integrating seismic inversion, well log interpretation, and outcrop analogs to develop a detailed geological model. Rock physics analysis was conducted to enhance seismic interpretation and improve reservoir characterization. Well correlation and facies analysis were used to establish depositional patterns and identify key reservoir elements, including channel, crevasse splay, and floodplain facies. A combination of object-based and multiple-point statistics (MPS) modeling techniques was applied to generate multiple realizations of the reservoir’s sand distribution. These realizations provided a probabilistic framework for assessing uncertainty and optimizing well placement. By integrating diverse data sources and employing advanced modeling techniques, the study successfully improved the understanding of the R Field reservoir. The resulting geological model serves as a valuable tool for guiding future exploration and development activities, mitigating risks, and maximizing hydrocarbon recovery.