#TITLE_ALTERNATIVE#

• Main Author: FERDIANSYAH (22014326), RIZKY
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/30615
• Institution: Institut Teknologi Bandung

<p align="justify">The East Java Basin, one of the oldest hydrocarbon-producing basins in Indonesia, has long been known as overpressured basin. This study aims to predict pore pressure and to analyze the causes of overpressure in Sumenep Laut Field, Northeast section of the East Java Basin. The understanding of this circumtances is expected to reduce and avoid issues related to overpressure presence in future exploration and exploitation wells. <br /> <br /> <br /> <br /> Data from 4 wells drilled in the study area showed different pore pressure profile and top of overpressure. The pore pressure magnitude in this field can partly be estimated by using sonic data with Eaton Method, assisted by direct and indirect pressure measurement data as well as other well data. Mechanisms of overpressure generation is analyzed from geochemical analysis of source rock, well temperature, Dutta-Katahara cross-plot and burial history. <br /> <br /> <br /> <br /> The overpressure generation mechanism in the study area is interpreted to be caused by combination of loading mechanism in the form of rapid sedimentation (disequilibrium compaction) and non-loading mechanism in the form of hydrocarbon maturity and clay mineral diagenesis. The variation of overpressure is thought to be controlled by differences in the lithologic composition, rate of sedimentation and tectonic process that worked after the overpressure has been developed.<p align="justify">