New Correlation for Calculation of Hydrocarbon Gas Minimum Miscibility Pressure (MMP) Using Slim Tube Experimental Data

This paper presents a new empirical correlation for estimating the minimum miscibility pressure (MMP) required for miscible hydrocarbon gas flooding. Only few empirical correlations exist for determining the MMP. These correlations are often used to estimate the MMP without considering the composition of the injected gas. On the other hand these correlations are based on a limited set of experimental data which are not quite applicable. In addition, in such correlations the complex condensing/vaporizing displacement process is not regarded. In this study, MMP has been correlated with temperature, oil composition and injection gas composition. The new correlation is based on experimental measured MMP data in literature and data derived from slim tube experiment in this study. This new correlation investigates the influence of the vaporizing/condensing drive mechanism and oil and gas composition on miscibility pressure. It was found that the new correlation is significantly more accurate than other correlations.

Keywords:

Enhanced Oil Recovery , Miscible Gas Injection , Minimum Miscibility Pressure , Correlation , Gas Composition , slim tube experiment