Seismic Interpretation and Reservoir Characterization of Missa Keswal Area using 2D Seismic and Well Data

Abstract

The principle reason for this work is the seismic interpretation of the Missa Keswal area, located in Chakwal district of Punjab province, Pakistan with a specific end goal to divide the plausible zone for the accumulation of hydrocarbons. The study area is situated in Potwar sub basin of upper Indus basin 33°11'19"N to 73°21'20"E. Three seismic lines (two dip and one strike) and Qazian Well are chosen. Patala formation acts as a source rock, Chorgali and Sakesar formation acts a reservoir rock whereas Murree formation acts a seal/cap rock. Seismic structural interpretation incorporates marking of reflector with the assistance of synthetic seismogram, fault picking, generation of polygon and time and depth contour map. The seismic interpretation shows anticline structures bounded by thrust faults. Two-way fault bounded closure is clearly observed on the time and depth Contour maps which confirms the presence of pop up structure in the study area. Time sections are converted into the depth sections to view the real picture of the interpreted horizons. In facies analysis, different cross plots were generated to confirm the dominant lithology of our reservoirs which turn out to be limestone. Volume of shale, porosity, water immersion and hydrocarbon potential are computed by applying petro-physical techniques providing the results with the help of which we distinguished the Zone of interest for a reservoir. SMT Kingdom 8.6, HIS 8.8 are the software used for interpretation of 2D seismic and well data.