accurate permeability estimation has always been a concern in determining flow units, assigning appropriate capillary pressure andrelative permeability curves to reservoir rock types, geological modeling, and dynamic simulation.acoustic method can be used as analternative and effective tool for permeability determination. in this study, a four-step approach is proposed for permeability estimati...

in this paper, the effect of flow rate on relative permeability curves was investigated in iranian carbonate rocks. core samples were prepared from outcrop of asmari formation. the dynamic displacement experiments were performed at 2.55, 3.55, 4.55 and 5.55 cc/hr during waterflooding and oilflooding. relative permeabilities have been calculated with the jones and roszelle method and then the fl...

Characterization of stress-dependent single-phase and multiphase fluid transport in fractured geo-materials is essential for a wide range applications, including CO2 sequestration, energy storage, geo-energy extraction. However, pivotal studies on capillarity flow deformable rock fractures are surprisingly sparse. In this study, we initially investigated the hydro-mechanical properties an intac...

Accurate permeability estimation has always been a concern in determining flow units, assigning appropriate capillary pressure andrelative permeability curves to reservoir rock types, geological modeling, and dynamic simulation.Acoustic method can be used as analternative and effective tool for permeability determination. In this study, a four-step approach is proposed for permeability estimati...

core flooding experiments were conducted with the objective of evaluating near miscible surfactant alternating co2 injection and the effect of surfactant concentrations on gas-oil and water displacements in porous media. the core samples were provided from a low permeability mixed wet oil reservoir at 156 °f and 1900 psia. in addition, very few studies of surfactant adsorption on carbonate mine...

Abstract Polymer flooding has been recognized as an effective technology to improve oil recovery. While synthetic polymers have widely used in this process, mechanical degradation tends occur at near-wellbore regions where flow rate is high. In paper, we evaluated the polymer both core samples and capillary tubes. Results showed that tended be severer when solution flowing through tighter or tu...

Decline curve analysis models are frequently used but still have many limitations. Approaches of decline curve analysis used for naturally-fractured reservoirs developed by water flooding have been few. To this end, a decline analysis model derived based on fluid flow mechanisms was proposed and used to analyze the oil production data from naturallyfractured reservoirs developed by water floodi...

New guidelines and suggestions for taking reliable effective relative permeability measurements in heterogeneous rocks are presented. The results based on a combination of high resolution 3D core-flooding simulations semi-analytical solutions the cores. Synthetic “data sets” generated using TOUGH2 subsequently used to calculate curves. A comparison between input curves “calculated” is assess ac...