Heat Flow Distribution in Offshore West Java Basin: Implication for Petroleum System in Anggursi Block, North West Java Basin

Abstract

Anggursi area is operated by PT PHE Anggursi, located in the offshore Northwest Java basin. It has been well known area for most prolific petroleum exploration and production provinces in Indonesia. This working area has approximately 8 thousand square kilometers. The Anggursi area were relinquished from the previous operator, IIAPCO and BP ARCO. Based on the previous dry hole exploration wells which drilled in the Anggursi area the root cause of exploration failures is caused by lack of thermal heatflow in the basin failed mature source rock to generated petroleum within northern part of Anggursi basin. Well data set comprising all paleo temperature available data from reliable VR plots from Anggursi was then examined. Our recent studies on geochemical and petrography analysis were performed to show the distribution of paleotemperature map which overlayed with the contoured regional heatflow map for the Sundaland region to anticipate the future challenges in exploration. This studies suggest positive impact on petroleum generation by recent VR data. Predicting regional thermal maturity in Anggursi basin comprehensively has become widely accepted component in exploration system, and it is already proven in lowering petroleum exploration risk in Anggursi Area.

AAPG Datapages/Search and Discovery Article #90354 © 2019 AAPG Asia Pacific Technical Symposium, The Art of Hydrocarbon Prediction: Managing Uncertainties, Bogor, (Greater Jakarta), Indonesia, August 7-8, 2019