Research and Application of Minimum Miscibility Pressure in Enhanced Oil Recovery

Yulong Ji

doi:10.54691/w1v37p94

Authors

Yulong Ji

DOI:

https://doi.org/10.54691/w1v37p94

Keywords:

Minimum Mixed-phase Pressure; Enhanced Oil Recovery; Mixed-Phase Flooding; Carbon Dioxide Flooding; Fine Tube Displacement.

Abstract

With the increasing depletion of conventional oil and gas resources, enhanced oil recovery technology has become the key to maintaining high and stable production in oil fields. Among various EOR technologies, gas displacement, especially mixed-phase displacement, is regarded as one of the most effective methods due to its ability to significantly reduce the residual oil saturation of oil reservoirs. The minimum mixed-phase pressure is a key parameter for achieving gas-flooding mixed-phase in the oil and gas extraction process, directly affecting the efficiency of enhanced oil recovery. This paper reviews the definition, influencing factors, experimental determination methods and theoretical models of the minimum mixed-phase pressure, and discusses its application in oilfield development. Research shows that the accurate determination of the minimum mixed-phase pressure can optimize the gas injection process, reduce development costs and enhance crude oil recovery rate.

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