Publications

Bintuni Bay, which is part of the BP working area, is one of the most prolific hydrocarbon production basins in eastern Indonesia. It is known as a foreland basin with a dominant left-lateral strike-slip extending W-E and thrust fault extending NW-SE. This study aims to conduct geochemical analysis of the source rock and determine the structural geology condition and geo-history based on subsurface interpretation, and 1D basin modeling. Moreover, basin modeling is used for the investigation of the petroleum systems. The data used in this research consist of 2D seismic, pyrolysis and vitrinite reflectance, biostratigraphy, and bottom hole temperature (BHT) data. From twenty one seismic trajectories and thirteen wells, spanning the study area, one can interpret two main deformations, namely an extensional phase during the Permian-Late Oligocene age and a compressional phase during the Late Oligocene-Recent age. Prior to the palinspastic restoration research, a negative strain value was obtained indicating the area underwent compressional deformation, causing a shortening of the horizons. Meanwhile, it showed steep subsidence followed by uplift events that visualized the foreland basin. Furthermore, the tectonic activity that occurred in the Oligocene and Pliocene became primary interest as said tectonic activity created the structure supporting the hydrocarbon accumulation. Hence, there are effective source rocks characterized by good quality and mature organic material namely Ainim and Lower Kembelangan Formation, while Kais Formation can be proposed as potential source rock consisting of limestone and shale.