2D-SEISMIC INTERPRETATION, PETRO-PHYSICS AND COLORED SEISMIC INVERSION OF FIMKASSER AREA, UPPER INDUS BASIN, PAKISTAN

Abstract

2D seismic interpretation has been carried out in Fimkassar area (study area) located in Chakwal district of Punjab province, Pakistan. The data usedfor this study was provided by department of Earth Sciences, consisting of two digital seismic sections and one well. Geologically, study area is located in eastern part of Potwar basin, Upper Indus basin bounded by Soan syncline in the north, Salt Ranges in the south, Jhelumfault in east and Kalabaghfault in west. The data usedfor this study is 2-D seismic lines in SEG-Y format, well logs of Fimkassar-02. Prospect evaluation (including gridding, Time and Depth contouring and identification of structural traps) has been carried out using Kingdom suit of Software. Structural interpretation has identified pop-up and snaked head structures favorable for hydrocarbon accumulation and is marked on seismic sections and time contour maps. These structures have been marked at Chorgali, Sakesar and Nammal formations of Eocene level, which are acting as reservoir rocks in the study area. The horizons are identified and named on the basis of well and generalized stratigraphic data. Facies modeling is carried on the well Fimkassar-02 for lithology identification. On the basis of Facies modeling different lithologies e.g. Shale, Limestone and clean sand are marked.