2D Seismic Data Interpretation and Petrophysical Analysis of Sanghar Area, Lower Indus Basin, Pakistan (P-1176) (MFN 5551)

Abstract

This dissertation presents the 2D seismic interpretation of Sanghar area in Lower Indus basin, which is located in the south western periphery of the Indian plate. The key objective of this project is to delineate the subsurface geometry with the help of different seismic techniques in order to understand the petroleum system of the concerned area. Main emphasize is on the interpretation methodology adopted in order to illustrate the horizons and faults. Beside this time and depth contour maps are generated along with petrophysical analysis. As the study area tectonically present in extensional regime, accordingly dominated by horst and graben structures. Grabens are of immense exploratory importance as it believed to be the kitchen area of hydrocarbon generation, whereas the faults are important in different aspects, of which the foremost is trap formation and further it facilitate in hydrocarbon migration from source to reservoir. Study area holds all the major elements of petroleum system verified by a number of oil and gas discoveries; however some seismic reflectors were not distinctive. It was realized that to interpret these horizons and to improve seismic resolution, a denser seismic grid most likely 3D seismic is required. Thus, interpretation of these horizons should be left for future study.