Weathered and fractured crystalline Basement emerged as the important unconventional play in the Barmer Basin. Natural fractures play a very significant role in the migration and hydrocarbon storage in crystalline fractured and weathered crystalline Basement reservoirs. Complexity and heterogeneity of the fracture network in the basement is a challenge to the geoscientist. This requires precise fracture characterization which is very significant for estimating the hydrocarbon potential as well as development of these reservoirs. A novel approach of integrating the seismic geometrical and stratigraphic attributes, with the borehole image logs and core data were found to be useful to characterize fractured and weathered crystalline basement reservoir in the Saraswati Field located in the eastern margin of Barmer basin. Seismic data derived Ant track volume calibrated with the core and bore hole image data has predicted NNW-SSE and NE-SW trending natural fractures information. Acoustic impedance and RMS seismic amplitude attributes identified the zones of intense fractured and weathered Basement. Assessment of the natural fracture network helped for appraising the Basement discovery as well as for designing the optimal well path for intersecting the maximum number of fractures for better reservoir performance.

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