IDENTIFICATION SHALLOW GEOHAZARD IN DEEP WATER REGION “VP” USING INTEGRATION ANALYSIS OF SEISMIC ATTRIBUTE AND SEISMIC INVERSION

• Main Author: Putra Pratama, Vallen
• Format: Final Project
• Language: Indonesia
• Online Access: https://digilib.itb.ac.id/gdl/view/54256
• Institution: Institut Teknologi Bandung

Oil and natural gas hydrocarbon are one of the most important natural resources in the era of technological advancement nowadays. The needs and demand for oil and natural gas is increasing. To fulfill this need, exploration is carried out in deep sewa waters. The Kutai Basin is included in deep water exploration, because the Kutai Basin is the largest and deepest basin with the second largest hydrocarbon reserves in Indonesia. Identification of geological hazards or better known as geohazard is needed in oil and gas exploration activities in deep sea waters. The existence of shallow geohazard is very important in the strategic plan of developing new fields, and if it is not considered, it will cause great losses. Shallow geohazard in deep sea water explorations is different from on land. Identification of shallow geohazard starts from pleistocene to recent. To identify the presence of shallow geohazard in the study area, a stratigraphic anlysis of 3D PSTM seismic data and analysis of seismic attributes are carried out. The seismic attributes that used to identify the presence of shallow geohazard are cosine of instantaneous phase, variance reflection strength, azimuth, and edge detection/dip angle. The identified shallow geohazards in this area steep slope, carbonate build up, submarine canyon, eroded seabed, shallow fault, and mass transport complexes. An analysis of the potential shallow geohazard was carried out and the distribution map was made of each shallow geohazard in this area which was then obtained the drilling favorability map.