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Water-alternating-gas (WAG) injection has demonstrated encouraging results for improving oil recovery. However, numerical simulation of three-phase flow and the associated hysteresis effects are not well-understood. Currently, modelling of hysteresis phenomena occurring in WAG cycles is based on updating two-phase relative permeabilities (krs) to account for three-phase characteristics, which is not...
Mathematical modeling of carbonated water injection (CWI) as an EOR and CO2 storage technique is studied in this paper. When carbonated water (CO2 saturated water) contacts oil during injection into oil reservoirs, CO2 will migrate from water into the oil phase as it has higher solubility in hydrocarbons. Consequently, oil mobility, and in turn oil recovery, will increase. In addition, CO2 can also...
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