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Emulsion flooding is an effective enhanced oil recovery (EOR) process for waterflooded heavy oil reservoirs, which is not suitable for the application of thermal recovery methods because of economic issues or technical impediments. This study demonstrated the experimental investigation of polymer-enhanced emulsion to improve the viscous oil recovery in waterflooded heavy oil reservoirs. It was indicated...
Alkaline/surfactant flooding has great potential for enhancing the recovery of heavy oil due to the synergistic effect between alkali and surfactant. This research is aimed at developing a new alkaline/surfactant system with a sustainable surfactant called alkyl polyglucoside to improve the heavy oil recovery and clarifying its displacement mechanism. A series of oil/water interfacial tension measurements...
To investigate the mechanism of alkali flooding for heavy oil recovery, sodium metaborate, which has strong chelating capacity for calcium and magnesium ions, is selected for laboratory research to evaluate its displacement efficiency using sandpacks. The results show that the dynamic interfacial tension between the alkali solution and Xia-8 crude oil is high, and the sandpack tests give evidence...
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