CO2 Miscible Flooding of Egyptian Oil Reservoirs

Abstract

This study presents a new proposed empirical correlations of crude oils for the minimum miscibility pressure and (CO2)-oil physical properties that include (CO2)-oil density, (CO2)-swelling factor, (CO2)-gas solubility and (CO2)-oil viscosity. Evaluation of the development was performed using data of 10 live crude oil samples representing all active oil producing areas in Egypt. The practical outcome was needed to predict of minimum miscibility pressure and (CO2)-oil physical properties of crude oils by reservoir engineers in case of the absence the experimental analysis.

Calculations for sensitivity of the proposed empirical correlations were determined by testing four oil samples collected from different locations in Egypt and comparing the measured data with those calculated from the new proposed empirical correlations. These evaluations show an excellent agreement of the measured properties and calculated ones.

Keywords: Enhanced oil recovery, (EOR) screening criteria, Miscible flooding injection, Minimum miscibility pressure. Slim tube test and Swelling test.