2D-Integrated Seismic Interpretation, Petrophysical and Facies Analysis, Attribute Analysis and Post Stack Colored Inversion of Chak Naurang area, Upper Indus Basin, Pakistan

Abstract

The dissertation pertains to investigate the 2D seismic interpretation. Data of Chak Naurang area situated in Potwar Fold and Thrust Belt was used which consists of seismic lines 881-CW-07, 881-CW-08 and 881-CW-09. The provided data was recorded and process in 1988 by OGDCL. After passing through processing sequence reflectors are marked and time section is made. Four major reflectors are marked on the basics of Synthetic Seismogram made by well data and time sections for each line is made on the basics of two-way arrival times. Chorgali formation and Sakesar Limestone are major productive reservoir rocks in Potwar Fold and Thrust Belt. This area is tectonically very complex and a compressional regime here anticlinal structures are present which may act as trap for hydrocarbon accumulation Nature of faults is majority reverse but also normal at many places. In addition to that Petrophysical analysis of Chorgali formation confirm its reservoir formation properties. Facies modeling being one of the important tool for the confirmation of lithologies. In this thesis, with the help of facies analysis of Amirpur-01 well, we came to the result revealing limestone as the reservoir lithology. After that seismic inversion has been studied to confirm the seismic interpretation. Seismic inversion results are also demonstrating that Chorgali and Sakesar are good reservoirs