2022
DOI: 10.1021/acsomega.2c04317
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Dynamic Behaviors and Mechanisms of Air-Foam Flooding at High Pressure and Reservoir Temperature via Microfluidic Experiments

Abstract: Air injection has been proven to be an effective improved oil recovery technique for deep and light oil reservoirs with low permeability and poor water injectivity. But the efficiency of air injection in highly heterogeneous reservoirs is low due to poor gas sweeping that may lead to early oxygen breakthrough caused by gas channeling and viscous fingering. Foam can be used to assist air injection to overcome the obstacles of early gas breakthrough and to increase the displacement and sweeping efficiency. In th… Show more

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Cited by 7 publications
(1 citation statement)
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“…In order to ensure that gas flows uniformly toward the wellbore, the foams tend to flow in larger pores and collect along the walls of the pore, increasing flow resistance, and preferentially block large pore paths (Wang et al, 2022). The selective blocking performance is influenced by the Jamin effect buildups and the increased apparent viscosity of the foam system in larger holes (Li et al, 2022). As shown in Figure 1.…”
Section: Figurementioning
confidence: 99%
“…In order to ensure that gas flows uniformly toward the wellbore, the foams tend to flow in larger pores and collect along the walls of the pore, increasing flow resistance, and preferentially block large pore paths (Wang et al, 2022). The selective blocking performance is influenced by the Jamin effect buildups and the increased apparent viscosity of the foam system in larger holes (Li et al, 2022). As shown in Figure 1.…”
Section: Figurementioning
confidence: 99%