MINIMUM MISCIBILITY PRESSURE PREDICTION FOR AN OIL RESERVOIR

The main parameter to determine the possibilities to enhance oil recovery by gas injection into a specific oil field is the measurement of Minimum Miscibility Pressure (MMP). Accurate determination of this parameter is critical for an adequate design of injection equipment project investment prospect. This pressure is the lowest pressure for which a gas can obtain miscibility through a multi contact process with a given oil reservoir at the reservoir temperature. The oil formation to which the process is applied must be operated at or above the MMP. Before field trial, this parameter is to be determined at the laboratory which traditionally is done by help of a slim tube or a raising bubble experiment. However, because such experiments are very expensive (time-consuming), the question we want to answer in this article is as follows: Is this still another method to measure the MMP? However, in order to investigate the MMP, we suggest another method by using compositional and empirical models. For this purpose, we used some of available experimental data from an oil reservoir with different injection gases to obtain a new MMP correlation that is suitable to be applied to this oil reservoir. We can use this obtained formula to determine minimum miscibility pressure of this oil reservoir with more accuracy.