Miscible and near-miscible flooding are used to improve the performance of carbon-dioxide-enhanced oil recovery in heterogeneous porous media. However, knowledge effects pore structure on CO2/oil flow behavior under these two conditions is insufficient. In this study, we construct pore-scale models for various methods comparatively analyze efficiency The simulation results indicate that compare...

Geological sequestration of CO2 through Enhanced Oil Recovery (EOR) presents an opportunity to achieve significant emissions reductions. However, there is considerable uncertainty over the amount of CO2 that can be stored over the economic life of an EOR project. This paper presents the development of a model that provides first-order cost estimates, sensitive to key site-specific or project-sp...

The main purpose of this investigation is to study the effect of near miscible CO2 injection in different porous mediums on both lab and field scales. This effect can be traced by the change of two-phase gas-oil relative permeability curves. In this work, the experiments have been performed on three rock types (i.e. sandstone, dolomite, and artificial fractured sandstone) based on an incrementa...

the main purpose of this investigation is to study the effect of near miscible co2 injection in different porous mediums on both lab and field scales. this effect can be traced by the change of two-phase gas-oil relative permeability curves. in this work, the experiments have been performed on three rock types (i.e. sandstone, dolomite, and artificial fractured sandstone) based on an incrementa...

Carbon dioxide flooding is a strategic replacement technology for greatly enhancing oil recovery in low-permeability oilfields, which includes social benefits resulting from carbon emission reduction and economic owing to the improvement of recovery. Therefore, it great significance develop apply CO2 storage petroleum industry. In reservoir conditions, usually under supercritical state, present...

The beach-bar sand reservoir of the Sha 4 Member Shahejie Formation in Dongying Sag is main oil-bearing formation this area. In recent years, its proven reserves have been getting lower and lower, poor petrophysical properties made water injection development difficult. turn, it results a rapid decline elastic productivity low oil recovery. study, experimental evaluation numerical simulation re...