#TITLE_ALTERNATIVE#

• Main Author: BUDIMAN (NIM : 22309001); Pembimbing : Dr.rer.nat Awali Priyono; Dr. Ari Samodra, AGUNG
• Format: Theses
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/20804
• Institution: Institut Teknologi Bandung

Structural development and heterogenities of basement lithology in pangea field had a complex geological history, therefore it could be probable potential naturally fractured reservoir. The application of conventional seismic method for naturally fracture distribution mapping could not be conducted directly due to dimension of fracture itself that below the seismic resolution (sub-seismic). Integrated seismic attributes analysis (variance, ant-track, amplitude attributes), FMI and geological structure modeling were used as an approach to predict open fracture existence and identify porous area in basement. Seismic attributes analysis of four zone on pangea field revealed that open fractures <br /> <br /> <br /> <br /> <br /> <br /> distribution pattern of ant-track seismic attributes had good correlation with FMI conductive fractures analysis and low amplitude attributes anomaly distribution. Open fractures trend of rose diagram ant-track attributes showed NNE-SSW and NE-SW direction with major orientation from statistical analysis results of : Zone A (N 034.96 °E and N 054.36°E), Zone B (N 034.10°E), Zone C (N 023.26°E) and Zone D (N 024.35°E). They were intensively distributed around of fault system. Low amplitude attributes anomaly on open fracture network were observed around of two basement high, namely : basement high-1 (NW) and basement high-2 (SE) that interpreted as potential fractured reservoir area. <br /> <br /> <br /> <br /> <br /> <br /> Genetically, geological structure modeling (palinspatic seismic reconstruction and fracture/fault modeling) explained that development and intensity of open fractures on pangea field were associated with the fault processes (fault related fractures) which influenced by two regional structural evolution phase : extensional phase (syn-rift) during Middle Eocene-Early Miocene time and compressional phase (inversion) during Plio- <br /> <br /> <br /> <br /> <br /> <br /> Pleistocene time until present. Their compressional force reactivated several number of normal (syn-rift) faults to be thrusted and strike-slip. The integrated open fracture analysis were expected to provide input for further oil and gas field development, particularly on fractured basement reservoir.