Determination of Minimum Miscibility Pressure (MMP) using PVTi Software, Eclipse 300 and Empirical Correlations

One of the most important factors in the miscible gas injection process is to determine the minimum miscibility pressure (MMP). According to the definition, the minimum miscibility pressure is the minimum pressure at which, at a constant temperature, the oil and gas injected can dissolve into each other to form a single phase. Among the available methods for determining the minimum miscibility pressure, laboratory methods, including the slim tube test and the ascending bubble apparatus test are more widely utilized. Although the mentioned tests have high measurement accuracy, they are very time-consuming and expensive. Therefore, the determination of the minimum miscibility pressure is usually done using computational and simulation approaches that also have high accuracy. Conducting PVT tests and determining their MMP using the slim tube method was previously performed. In this study, the minimum miscibility pressure of reservoirs was determined by applying three simulation methods utilizing PVTi software, Eclipse 300 software, and empirical correlations. Comparing the obtained data with the laboratory results revealed that the simulation by Eclipse 300 is the fastest and most accurate approach.