Tectonics And Hydrocarbon Prospects of Patwar Area

Abstract

The tectonic depression of Potwar sub-basin is formed as result of continent-to-continent collision at the northwestern margin of Indian plate. Presently two-fold division is envisaged for the Potwar sub-basin on the basis of deformation style, that is Northern Potwar Deformed Zone (NPDZ) and the Plate Form Zone. The NPDZ is layung in the south of Kalachitta Margalla hills. It is a structurally complex zone. The Potwar sub-basin is one of the major hydrocarbon-producing provinces of the country. The geochemical results and other co- relations studies indicate that the oil being produced from Potwar basin is mainly sourced by Patala Formation. There are other potential source rocks of Precambrian and Mesozoic age. The Potwar region is profilic area with multiple structural and stratigraphic leads, such as simple anticlines, popup structures, hanging wall anticlines, sub-thrust and unconformities. Attempt has been made to relate hydrocarbon entrapment in various areas of Potwar basin with a distinctive structural domain, which defines orientation, styles and geographic distribution of structures and migration form the source rock to reservior Multiple reservoir of clastic and carbonates from Cambrian to Eocene age exist in different parts of sub-basin. For the carbonate reservoirs of Eocene age there exist a relationship between the lineament and oil discoveries