Determination of minimum miscibility pressure of acid gas - Crude oil systems in the Nisku Pool

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McLand Resources Ltd. owns a carbonate reservoir producing a light oil with a significant amount of H2S.**Currently, the company is separating the acid gas from the produced gas, which adds additional cost to the**production operation of the pool. The company wants to look into the opportunity of re-injecting the produced**acid gas into the reservoir, which can help to simultaneously accomplish two goals: enhancing the oil recovery**efficiency and sequestering acid gas in the reservoir. One key parameter in the gas injection design is the**minimum miscibility pressure (MMP) between the acid gas and crude oil mixtures at reservoir temperature.**MMP refers to the pressure at which the injected gas will reach complete miscibility with reservoir oil,**enabling a theoretical 100% oil recovery efficiency. The research problem faced by the company is how to**accurately determine the MMP between the acid gas and crude oil in the carbonate Nisku D-2B formation. This**proposal will develop reliable and efficient computer program that can be used by Mcland to accurately**compute the MMP between acid gas and crude oil. The newly developed computer program is able to handle**acid gases with any compositions, which enables us to examine the effect of H2S concentration in the acid gas**on the gas/oil MMP.