2-D Seismic Interpretation And Petrophysical Analysis Of Basal Oil Field, Upper Indus Basin, Pakistan

Abstract

The document examines the geology and tectonics of the study region, which is a thrustbounded pop-up anticlinal structure in the Basal oil field. The place is located in Fatteh Jhang, Attock District, Pakistan. The area is in the eastern Kohat Plateau of Pakistan's Upper Indus Basin. The research's major focus is to use available seismic lines to identify the petroleum system and structures capable of hydrocarbon accumulation using 2D seismic interpretation of the studied area. The presence of anticlinal geometry and pop-up structures is confirmed by a subsurface imaging of the area. With the help of time and depth contour maps, the results are further examined in depth. The petrophysical examination of the study region is also discussed in this document, which is based on well log data from the Garhi X-01 well drilled in the field. The appraisal of the main reservoirs in the research region is the focus of petrophysical analysis. The Chorgali Formation and Sakesar Limestone of late Eocene age, as well as Lockhart Limestone, were identified as the main reservoirs in this well based on three main reservoir characteristics: porosity, hydrocarbon saturation, and shale content of the reservoirs in the research region. The whole of interpretation is represented by graphs that show good effective porosity conditions with less shale volume in both formations, but Lockhart Limestone has less water saturation and more hydrocarbon saturation than Chorgali Formation and Sakesar Limestone, indicating that it has more potential to be a good hydrocarbon reservoir.