2D Seismic Reflection Data Interpretation of Badin Area Integrated with Reservoir Characterization along with 1D Forward Modeling , Petro-physical analysis, Facies Analysis and Seismic Inversion

Abstract

The present study pertains to the structural and stratigraphy interpretation using SEG –Y data and well logs data. Badin area is prominent in the Lower Indus Basin for its hydrocarbon (oil and gas) structural traps. For interpretation of these seismic lines three reflectors and normal faults were marked by using the interactive tools of Kingdom software, polygon construction, two way time contour and depth contour are also the part of the seismic data interpretation. The marked horizons were identified using formation tops from wells and their depths were confirmed through correlation with synthetic seismogram. From time and depth contour maps of the horizons that are marked were generated to understand the spatial geometry of the structures and the nature of geological structures as identified by the seismic section of the area. . Subsurface mapping reveals that major fault trend is NE-SW. Normal faulting as identified on seismic sections confirmed that study area lies in extensional tectonic regime. The resulted seismic interpretation of these lines confirmed Horst and Grabben structures by normal faulting. Horsts or the elevated portions in the structure are suitable place for the accumulation of hydrocarbon. 1 D modeling is done for the Dot-01 well and zone of interest is the Lower Goru. Porosity calculations are made to find out the hydrocarbon saturation .The main constituents of petroleum system are present, proven by a number oil and gas discoveries but there is still a requirement of advance techniques to improve seismic resolution and quality of interpretation.