2D SEISMIC STRUCTURAL INTERPRETATION AND PETROPHYSICAL ANALYSIS OF TURKWAL DEEP-01, POTWAR SUB BASIN, PAKISTAN

Abstract

Seismic data interpretation and petrophysical analysis are the main tools in petroleum exploration which are used to delineate subsurface geology and structural geometries and to carry out hydrocarbon bearing capacity of the formations present in the subsurface. The main objective of this study is to delineate subsurface structural geometry and to carry out petrophysical analysis of the selected zones. To achieve this objective six seismic lines and well data were obtained from LMKR with the help of Kingdom Software. Selection of control line, marking of horizons and their correlation as well as marking of faults, followed by preparation of TWT contour maps and depth maps based on structural interpretation, the overall structural geometry is a triangular zone with two positive structures on both sides. The petrophysical analysis reveals the presence of two zones in Chorgali Formation and two zones in Sakesar Limestone having Porosity 4.53%, SW 84.66%,SH 15.66% , Porosity 5.2%, SH 29.37%, SW 70.67%, Porosity 3.82%, SW 87.06% SH 12.94%, Porosity 3.4%, SW 80.96%, SH 19.04% respectively.