co2 injection is an effective technique for improved oil recovery in light oil reservoirs, especially for water flooding abandoned reservoirs. in this study, the lower part of es1 reservoirs in pucheng oilfield was introduced as the target reservoir. by studying the minimum miscible pressure in co2 flooding, the reservoir could achieve miscible flooding. long core displacement experiments prove...

Carbon dioxide miscible flooding has become one of the important technologies for improving oil recovery. The Minimum Miscible Pressure (MMP) is key parameter to realize flooding. As MMP in research area higher than formation fracture pressure, cannot be formed. To address this problem, it necessary find a way reduce MMP. Citric acid isobutyl ester chosen carbon and crude research. effect citri...

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...

movement of pesticides through soils to groundwater and surface water has long been considered a potentially serious environmental problem in different parts of the world. remediation of such problems requires monitoring of site specific data. considering these facts a laboratory based investigation was carried out to determine the sorption and leaching parameters of two contrasting and widely ...

The displacement of a shear-thinning fluid by denser and less viscous Newtonian in vertical duct is investigated using experiments numerical simulations. We study how increased viscosity contrast between the fluids affect displacement. Our results show that degree significantly influences development interfacial patterns growth perturbations. In weakly regime, progresses as stable with no visib...