2D-SEISMIC INTERPRETATION AND PETRO PHYSICS ANALYSIS OF CHAK NAURANG AREA, POTWAR SUB BASIN, UPPER INDUS BASIN, PAKISTAN

Abstract

The dissertation pertains to investigate the 2D seismic interpretation off seismic lines 881- CW-11,782-CW-27 782-CW-28 and 782-CW-24 of Chak Nauran. To carry out this exercise, seismic reflection data, Which consist of line 881-CW-11,782-CW-27, 782-CW-28,782-CW 24 of Chak Naurang area situated in Potwar Fold and Thrust belt, data was recorded and proceed in 1988 by OGDCL and POL.The data passed through a desirable processing sequence and finally a time section was prepared. Chorgali Formation, Sakesar Formation and Khewra Formation are main reservoir rocks and are productive in the Potwar Fold and Thrust belt. The study area is mainly characterized by compressional regimes, as there are major faults. Time controller map shows presence of anticlinal structures in Khewra formation. So, this may act as trap for hydrocarbons. Three horizons are marked due to their prominent reflection on the seismic section namely Chorgali, Sakesar and Khwera respectively time section is prepared by using two-way arrival time from seismicGF section. The petrophysical analysis of Chorgali show on prospective zone from 2617-2622 meters. Rock physics further confirms the presence of zone of interest