Mechanistic Modeling of Hybrid Surfactant-CO2 Foam Flood Coupled with Geochemical Reactions

???????????????-??????????????? ??? ????????? ????????? ??? ??????, ????????? ??????, ????????? ????????? ????????? ????????? ?????? ?????? ???????????? ?????? ??? ??????. ?????? ???????????? ???????????? ??????????????? ?????? ??????/?????? ????????? ??????????????? ???????????? ?????? ????????????. ??? ??????????????? ???????????? ????????? ????????? ????????? ???????????????-??????????????? ??? ????????? ???????????? ??????/?????? ????????? ???????????????. ????????? ?????????????????? ???????????? ????????? ????????? ?????? ????????? ?????? ????????? ????????? ?????????. ?????? ??????????????? ???????????? ?????? ?????? ??? ????????? ????????? ???????????? ??? ????????? ????????????????????????. ??????????????? ???????????? ????????? ???????????? ?????? ??? ????????? ?????? ????????? ????????? ??? ?????? ???????????? ????????????. ???????????? ????????? ???????????? ????????? ??? ??????????????? ?????? ????????? ?????? ???????????????-??????????????? ??? ????????? ?????? ???????????? 19.9% ???????????????. ????????? ??? ??? ??????/?????? ????????? ????????? ?????? ????????? ????????? ?????? ?????????. ????????? ????????? ????????? ?????? ??? ?????? ??????????????? ????????? 7% ???????????? ?????? ?????? ??????/?????? ?????? ????????? ????????? ??????. ??????????????? ???????????? ????????? ????????? ??? ????????? ?????? ???????????? ????????? ????????? ?????? 5.3% ?????? ????????????. ???????????????-??????????????? ??? ????????? ???????????? ???????????? ????????? ???????????? ????????? ???????????? ?????? ???????????? ???????????????.To enhance the oil recovery, hybrid surfactant-CO2 foam flood introduces synergetic effects including improved mobility, wettability, permeability reduction. A comprehensive description of the destruction/regeneration of foam is of importance for the accurate estimation of oil recovery. Coupled with geochemical reaction model, the mechanistic model of the surfactant-CO2 foam has been developed to describe the destruction/regeneration reactions of the foam. Because the CO2 has solubility into brine, geochemical reactions, incorporated with the dissolved CO2, influence the destruction/regeneration of foam. The model has been examined to simulate surfactant-CO2 foam floods with and without geochemical reactions in multi-layered reservoir. Compared with continuous CO2 injection, the synergetic effects of hybrid foam flood processes are manifested for foam floods with and without geochemical reactions. When geochemical reactions are not considered, the hybrid foam flood increases oil recovery by 19.9% over CO2 injection. The in-situ destruction/regeneration of foam are affected by geochemical reactions, especially mineral dissolution. The mineral dissolution increases the concentration of dissolved CO2 in brine by 7%, as a result leads to influencing the destruction/regeneration of surfactant-CO2 foam contributing to the synergetic effects. Consequently, foam flood with geochemical reactions produces less oil recovery by 5.3% in comparison to that without geochemical reactions. Therefore, an assessment of geochemical reactions is of importance for an accurate prediction of the surfactant-CO2 foam flood.Maste