INTEGRATED SEISMIC INTERPETATION, PETROPHYSICAL ANALYSIS ALONG WITH SEISMIC ATTRIBUTE ANALYSIS, INVERSION AND FACIES ANALYSIS OF MISSAKESWAL AREA

Abstract

Missa Keswal area is part of Potwar sub-basin of Upper Indus basin which is known for hydrocarbons and structural traps. Work has been done on three lines GO-994-GNA-09, GO 994-GNA-10, GO-994-GNA-11. For the interpretation of seismic data Kingdom software is used for marking of reflectors depending on prominent wiggles which describes the amplitude and then these reflectors are named as Murree, Chorgali, Sakesar, Khewra Sandstone and based on generalized stratigraphic column encountered in well MISSA KESWAL-03 lying on the given seismic line GO-994-GNA-11. Faults were also marked to examine the subsurface structure. Pop-up structures can be seen in the marked seismic section. Prospect evaluation (including gridding, Time and Depth contouring and identification of structural traps) has been carried out using Kingdom suit of Software. Time sections are converted into the depth sections to view the real picture of the interpreted horizons. Time and depth contour maps of all formations are also prepared at a particular level to analyze the variations based on time and depth. Anticlines acts as a trap in the area, which is best for hydrocarbon accumulation. These structures have been marked at Murree, Chorgali, Sakesar and Khewra Sandstone formations. Seismic attribute analysis is used for the confirmation of 2D Seismic interpretation and it also highlights the zone of interest. Petrophysical analysis is done which provided information regarding the zone of interest for the presence of hydrocarbon. Facies modeling is carried on the well MISSA KESWAL-03 for lithology identification. Based on Facies modeling different lithologies e.g. Clayey Shale and Sand are marked. Colored inversion is carried on the line GO-994-GNA-09 to acquire indication of the hydrocarbons