2D SEISMIC INTERPRETATION AND PETROPHYSICAL ANALYSIS OF ZIARAT AREA, LOWER INDUS 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. From the perspective of petro-physical interpretation, one reservoir zone have been marked from Chiltan Limestone by using the data from ZIARAT-01 well. Zone of Chiltan Limestone showed the 60% of hydrocarbon saturation, 18% volume of shale and 3-4% effective porosity.