Geology and Hydrocarbon Potential of Central Indus Basin, Pakistan

Abstract

  Central Indus basin extends approximately between 27.5° to 32.5°N latitude and 67°E longitude to the eastern boundary of Pakistan. Its tectonics, stratigraphy and hydrocarbon potential are described based on data obtained from the study of outcrops and wells drilled in the area, -Of about 35 exploratory wells drilled, three commercial gas discoveries in Jurassic samana- Suk sandstone. on its eastern plain, two gas and one condensate-gas discoveries in Paleocene Ranikot and Cretaceous Pab Sandstones on Its central portion and – five gas discoveries in Eocene SuijLaki-Klrthar limestones on its south-western part prove that hydrocarbons are present. However no commercial oil field is discovered so far. Considering the large area of about 280,000 sq km having sediments approximately 106 cubic km and the presence of natural reservoirs, seals, source rocks, oil shows, condensate and large gas fields Indicate favourable conditions for the discovery of oil fields In central Indus basin with stepped up exploration and drilling. The main hydrocarbon fairways are aleozole-Mesozolc titled fault blocks, Tertiary reefal banks and drape compressional anticlines.