2D seismic interpretation, petrophysical and rock physical analysis of Sanghar area, well Chak-63#01, lower Indus basin, Pakistan (P-1063) (MFN 3291)

Abstract

This dissertation contains the study and interpretation of 2D seismic reflection data of selected seismic lines of Sinjhoro area, Lower Indus Basin, Pakistan. The main objective of this research was delineation of subsurface structures favorable for hydrocarbon accumulation. This area is situated in the Sanghar District of Sindh Province and is licensed to Oil and Gas Development Corporation Limited (OGDCL). The seismic data for this dissertation was provided by the Land Mark Resources (LMKR) by the permission of Directorate General of Petroleum Concessions (DGPC). The data comprised four seismic lines, base map and well tops of well CHAK-63#01. The names of lines obtained are: (876-SGR-86, 886-SGR-346, 886-SGR-347, 886-SGR-350 and 896-SGR-389) Three prominent reflectors (pink, green, blue) were marked on the basis of their reflection character. They represent Ranikot, Upper Goru and Lower Goru Formation respectively. Two-way time (TWT) was read from the seismic sections and average velocities were used to create TWT and Depth Contour maps. Rock physical studies followed by petrophysical studied were done for Lower Goru Formation which proved it to be the reservoir formation in the well CHAK-63#01.