Publications

The exploration journey of the East Java Basin has had a long history of milestones since the first decade of hydrocarbon discovery in 1880 through to today, with good and bad events happening throughout this long period. Many people who are related with the oil and gas business are still putting their efforts to continue exploring this basin to find the next giant discovery in East Java. One of the challenges in this basin is the abnormal pressure. Many situations will be faced while we endeavour to predict and anticipate the abnormal pressure in the East Java Basin. Hence, the knowledge of abnormal pressure is a must for the company personnel who are starting from exploration stage, through to exploration drilling and ultimately to develop the discovery. In this paper, the author arranges the delineation of the abnormal pressure at the basin scale perspective and also predicts its generating mechanism from geological aspects in the East Java Basin. The input data comes from 90 wells with various reservoir objectives and good well spacing that covers the entire East Java Basin, and several seismic lines to support the subsurface interpretation. The output is preliminary analysis of delineation abnormal pressure segment map which included basic generating mechanism aspect and its implication for hydrocarbon exploration in the identified over pressure segments. The comprehensive analysis which trigered an over pressure behind the basic generating mechanismmechanism and the comparison aspects to differenciate each unit over pressure segment are not discussed on this paper due to limitation of knowledge. Hopefully, this paper will give the abnormal pressure overview to the related people who will start or continue their exploration activity in the East Java Basin with a secure and proper way to find the next giant discovery.