Publications

Pinang Field has two adjacent, anticlinal closures with NW-SE trend, bounded by a thrust fault on the SW side of the trend. Early study on this field shows that the original oil water contact (OOWC) is different between closures. One closure has an OOWC at a level deeper than its spill point. A structural interpretation was conducted to see if faulting could explain this potential compartmentalization. However the result shows no obvious evidence of faults between the two closures. This fact was the driver to look beyond structural compartmentalization and try to incorporate more data and methods to explain the phenomenon stratigraphically. A seismic model based inversion has been utilized to generate an impedance volume. 4 out of 5 wells that have sonic logs were incorporated to build the initial model. The output impedance was further transformed to porosity and volume of shale through seismic multi attribute process. Integrated interpretation by combining seismic attributes, sets of core and well logs has provided new insight on architecture of the reservoir where it is now interpreted that the boundary between the closures was due to different depositional settings and lithologies.