INTEGRATED STUDY FOR HYDROCARBON ACCESSMENT OF JOYA MAIR AREA UPPER INDUS BASIN PAKISTAN USING 2D SEISMIC DATA AND WELL LOGS

Abstract

The JoyaMair is oil field located in the south-southeast part of salt Range PotwarForland Basin. It comprises the structures that result from the compressional tectonic regime. The main structure includes thrust and back thrust anticline as a result of collision between Indian and Eurasian plate. For the hydrocarbon accumulation these structures are important if proper petroleum play is available. The structure of the area is delineated with the help of four (4) dip lines and two (2) crosslines. A triangular zone is marked on the seismic lines which act as suitable trap for petroleum play and Minwal X-1 well is drilled on the structure. The main reservoir of the area is Chorgali Formation and Skasser limestone of Eocene age. To evaluate the hydrocarbon potential in the reservoir an integrated geophysical and petorphysical study is done. Petrophysical study shows a good percentage of effective porosity 13% in both of the reservoirs with Hydrocarbon saturation upto 68%. Seismic attributes highlighted the potential zones in the reservoir and Colored inversion shows the elastic property i.e. Impedance of the reservoir suitable for hydrocarbon