2D Seismic Data Interpretation And Petrophysical Analysis Of Minwal Area, Upper Indus Basin, Pakistan

Abstract

The Minwal Field is a significant source of hydrocarbons in Pakistan and is situated in the Upper Indus Basin, Potwar sub-basin. To conduct this study, four disciplines, one strike-line, and one well-data were analyzed. The Eocene Chorgali Formation and Sakesar Limestone, which constitute the primary reservoir units, were the main focus. The seismic interpretation was carried out by marking horizons on the Chorgali and Sakesar Limestone, as well as fault identification. This led to the creation of time, velocity, and depth contour maps, which indicated the presence of a subsurface anomaly in the structure, causing a triangular geometry. The dip lines showed the presence of a back thrust and fore thrust, forming a triangular structure. These maps provided insight into potential reservoirs and promising sites for hydrocarbon exploitation in the future. Petrophysical analysis of the complete interval of the Chorgali Formation and Sakesar Limestone revealed that the Sakesar Limestone had more hydrocarbon potential, with lower clay volume and higher effective porosity than the Chorgali Formation.