2D Seismic Interpretation of Sanghar Area, Lower Indus-Basin, Pakistan (P-1040) (MFN 3037)

Abstract

This dissertation contains the study of 2D seismic reflection data interpretation of selected seismic lines of Sinjhoro Exploration Lease (E.L.), Southern Indus Basin, Pakistan, for delineation of subsurface structures favorable for hydrocarbon accumulation. This Exploration Lease 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 VSP of well Ichri – 01. The lines which were used are: (944-SGR-229, 944-SGR-231, 944-SGR-236, 944-SGR-238). Four prominent reflectors (green, yellow, orange and red,) were marked on the basis of their reflection, which represent Laki Limestone, Lower Goru, Basal Sands, and Chiltan Limestone formations respectively. Two-way time (TWT) from the seismic sections and average velocities were used to create TWT and Depth Contour maps and 3D Time and Depth Surfaces of Basal sands and TLG. In the end, by the examination of the maps and surface models, leads were identified and well locations were proposed.