This study provides insights into the experience gained from investigating thermodynamic behavior of well and reservoir fluids during acid gas injection (AGI) in a hydrocarbon field to enhance oil recovery (EOR) reduce greenhouse emissions. Unlike conventional water natural injection, AGI involves complicated phase changes physical property variations at various pressure-temperature (P-T) condi...

The measurement of the minimum miscibility pressure (MMP) is one of the most important steps in the project design of miscible gas injection for which several experimental and modeling methods have been proposed. On the other hand, the standard procedure for compositional studies of miscible gas injection process is the regression of EOS to the conventional PVT tests. Moreover, this procedure d...

since the pressure of hydrocarbon reservoirs drops due to production, in order to keep the production rate constant or increase enhanced recovery, few methods are used. one of which is gas injection to the reservoir. on the other hand, due to reduction in oil production potential of aghajari oil field, gas injection is highly required to pressurize and enhance oil recovery. there is a possibili...

Abstract One of the most effective enhanced oil recovery techniques is carbon dioxide (CO 2 ) flooding. It because its high rate and associated advantage on environment. CO flooding has been broadly used commercially proven. Depending reservoir operational conditions, it can be implemented either in immiscible or miscible modes. Determining injection mode depends minimum miscibility pressure (M...

A new oil–gas Minimum Miscibility Pressure (MMP) calculation algorithm is developed in this work based on the classic cell-to-cell simulation model. The proposed couples effects of capillary pressure and confinement original model to predict MMPs a confined space. Given that relies volume predictions reservoir fluids each cell, volume-translated Peng-Robinson Equation State (PR-EOS) applied for...

Abstract Numerous studies have investigated the fundamental mechanisms by which CO 2 flooding can increase oil production altering properties of hydrocarbon fluid, including swelling, viscosity and interfacial tension reductions, extraction light-to-intermediate components. However, interactions between fluid may also cause several problems, such as asphaltene precipitation due to crude oil's i...

Natural gas injection is considered for enhanced oil recovery (EOR) in a high saturation pressure reservoir block B111 of the Dagang oilfield, China. To investigate interaction characteristics injected natural and crude oil, ability dissolution–diffusion miscibility–extraction was tested using piece high-temperature high-pressure PVT equipment. The physical properties minimum miscible (MMP) gas...