2D Seismic Interpretation And Petrophysical Analysis Of Fort Abbas Area, Central Indus Basin, Pakistan

Abstract

The research was carried out on Fort Abbas area which is in the Thar desert Punjab Pakistan. Fort Abbas area is in the Central Indus Basin which is a tectonically stable area. 2D seismic interpretation and petrophysical analysis was conducted to determine the subsurface geology of the area under study i.e Fort Abbas. These operations were done to identify the potential reserves of source and reservoir. The petrophysical analysis was specifically done on Bijnot-01 well to identify the potential reservoir and source in Fort Abbas. Four migrated seismic lines data were obtained which included one strike line (FABS-11) and three dip lines (FABS-13, FABS-41, FABS-43) trending Northeast and Southeast respectively. The Horst and Graben structures are observed because Fort Abbas area lies under tectonic regime. Petrophysical analysis of Bijnot -01 well was performed to determine the reservoir characteristics of Khewra sandstone and source characteristics of Mughal Kot. The properties computed through petrophysical analysis are volume of shale, Porosity and resistivity of water for reservoir evaluation. The three horizons marked for reservoir are Sui Main Limestone, Chiltan limestone, and Khewra Sandstone. The horizon marking is followed by fault marking and time to depth contour maps are also generated. The logs utilized for source rock evaluation are gamma ray, resistivity and density logs.