SUBSURFACE STRUCTURAL INTERPRETATION AND PETROPHYSICAL ANALYSIS OF RAJIAN AREA, UPPER INDUS BASIN, PAKISTAN

Abstract

Geographical location of the study area lies between latitude 33.01343-32.9817 and longitude 72.8472-72.8012. Rajian area lies within the, Upper Indus Basin in south east of Salt Range Potwar Foreland Basin. The present study was conducted to revel the subsurface geology of Rajian area by the structural interpretation of seismic sections and to estimate the hydrocarbon saturation using petrophysical analysis the marked horizons are identified using formation tops from wells Rajian-01 and Rajian- 03. Seismic interpretation of the given 2D information reveals that the study area has undergone severe distortion illustrated by the event of thrusts and back thrusts forming a triangle zone within the subsurface showing a pop-up geometry. The overall trend of those structures is north-west south-east indicating the area to be a part of compressional regime. The six zones interpreted by the petrophysical analysis includes Chorgali Formation and Sakesar Limestone, shows hydrocarbon potential in the Sakesar Limestone zone.