Prediction of Oil Rim in Petroleum Reservoir Based on Compositional Gradients: A Real Case Study from Haripur Field.

Mohammad Amirul Islam, A.S.M. Woobaidullah, Badrul Imam

Abstract


The first oil producing field is Haripur Field, from the well no. SY-7 the reservoir produced approximately 0.53 MMSTB of oil with average flow rate 207 STB/D starting at 1987 and end at 1994 which make interest among the reservoir engineers for further investigation to delineate the oil bearing zone. Compositional gradient analysis is a proven and authentic technology to detect the gas-oil-contact (GOC) in the reservoir fluid column by collecting a reservoir fluid sample from a reference depth. In this study oil sample is collected at depth 2030 m and analyzed its Pressure Volume Temperature (PVT) properties with PVT cell to determine composition and API gravity. From this investigation outcome a compositional grading in the reservoir fluid column is modeled and detected the gas-oil-contact (GOC). The compositional grading model is validate by the seven years oil production rate and tube head pressure history matching through reservoir simulation study.

Keywords


Oil Rim, Compositional Grading, Gas-Oil-Contact, Pressure-Volume-Temperature, Reservoir Simulation, History Matching.

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