Abstract:
Datta sandstone of Potwar Sub-basin of Pakistan has significant role with reference to hydrocarbon potential. The fields of Toot, Meyal, and Dhulian produces around 1500 million barrels of oil. Datta formation is disseminated in the western part of Salt Range in Surghar, Shinghar, Shaik Budin Hills in Marwat Range and western Khisofr Range. Datta formation is also present in Kala-Chitta, Hazara and Samana Ranges. Due to the complexity of Datta formation, it is important to investigate/ evaluate its petrophysical characteristics and multiphase fluid flow behavior. In this study petrophysical properties were estimated and later, correlations have been developed between core and log data. Further, the porosity and permeability maps have been generated, which are used for flow rate calculations.
Petrophysical study through wireline log interpretations and lab analysis has produced conclusive results for evaluation of hydrocarbon potential in the formation. Porosity map show trend of porosity which ranges from 0.324% to 20%. Permeability map shows the trend of permeability which ranges from 0.0035 md to 1284 md. This study shows that, for per unit pressure drop, flow rate ranges from 2.95 to 790 (cc/sec) for oil and 1.56 to 347 cc/sec for gas.
