2D seismic interpretation and petrophysical analysis of Fazalpur area, central Indus basin, Pakistan (P-1133) (MFN 4001)

Abstract

The main purpose of the dissertation is to evaluate the structure and hydrocarbon potential using seismic and well log data of Fazalpur area, Central Indus Basin, Pakistan.Fazalpur area lies in Sindh monocline which is located in Central Indus Basin resting on the continental margin of Indo-Pakistan Plate which is bounded in South by Jaisalmer-Mari-Kandhkot High, while Sulaiman Range describes the western boundary. The Sargodha High marks the north-eastern boundary. The Punjab Platform dips westward into Sulaiman Foredeep. The structural style of the Central Indus Platform Basin is obscured at the surface by thick alluvial cover and is characterized mainly by monoclinal and Horst and Graben structures in the subsurface. The targeted Formations were of Paleocene age. For structural enhancement, five migrated seismic lines i.e. 954- FZP-06, 954-FZP-08, 954-FZP-09 and 954-FZP-10 (dip lines) 954-FZP-05 (strike line) were used. Time and depth contour maps of three horizons, Habib Rahi formation, Sui Main and Dunghan Limestone were generated which confirmed the Horst and Graben and monoclinal structures in the subsurface. For petrophysical analysis two zones have been marked at the level of Pirkoh Formation and Sui Main Limestone respectively which inferred that Pirkoh Formation is more promising as compared to Sui Main Limestone on the basis of effective porosity 0.08, Vsh 0.45 and Sw 0.14. Dunghan Limestone was not evaluated petrophysical due to lack of data.