SEISMIC INTERPRETATION AND PETROPHYSICAL ANALYSIS OF MISSA KESWAL OIL FIELD, UPPER INDUS BASIN, PAKISTAN

Abstract

The document discusses the geology and tectonics of study area that lies in Missa Keswal oil field which is a thrust bounded anticlinal structure. Geographically, the area lies in Gujjar Khan tehsil, Rawalpindi district, Punjab, Pakistan. Tectonically, the area lies in eastern Potwar division of Upper Indus Basin Pakistan. The research focuses on the 2D seismic interpretation of the study area to investigate for the petroleum system and the structures capable of hydrocarbon accumulation with the help of available seismic lines. The subsurface image of the area confirms the presence of anticlinal geometry and pop-up structures. The results are further elaborated in terms of time and depth maps of the study area. The document also discusses the petrophysical analysis of the study area on the basis of well log data available for Qazian-01X well drilled in that field. The main focus of petrophysical analysis is the evaluation of the primary reservoirs in the study area namely Chorgali Formation and Sakesar Limestone of late Eocene age in terms of three main reservoir characteristics namely characteristics i.e. porosity, saturation of hydrocarbons and shale content of the reservoirs in the study area. The whole interpretation is expressed in terms of graphs that depict good effective porosity conditions with less shale content in both formations but saturation of hydrocarbon is more in Chorgali Formation as compared to Sakesar so it is having more potential to be a good hydrocarbon reservoir.