Abstract

The Sajali area is situated on the southeastern part of Nandej/Wasna field of Ahmedabad tectonic block, Cambay basin. The area consists of NNE-SSW trending inverted structures separated by linear lows. These structures were developed during post rift phase before critical moment (7 Ma) due to inversion of several extensional faults. The sand/silt isolith maps and isochronopach map of the main producing reservoirs (Kalol-IX and X pay units) in the adjoining areas, suggest the clastic input from NNW direction which is oblique to the structural trend in the area. Therefore, the area looks to be promising for stratistructural entrapment of hydrocarbons. The intervening shales/clays are likely to form an effective up dip seal for the migrating hydrocarbon