Feasibility Assessment of the CO2 Miscible Flooding Process

doi:10.11885/j.issn.1674-5086.2013.09.22.03

Abstract

Abstract:

CO2 flooding is a win-win measure for enhanced oil recovery and burial of greenhouse gases，which has a widely
applied prospect in China. CO2 miscible flooding feasibility evaluation is an important foundation for the implementation
of the field-scale. On the basis of considerable field application experience and literatures，we analyzed the negative factors
of CO2 miscible flooding and pointed out an important consideration problem of CO2 miscible flooding process，as well as
the development trend，and proposed feasibility evaluation of CO2 miscible flooding including：reservoir screening，laboratory
measurements，reservoir simulation，economic and risk analysis，pilot testing. We hold that the feasibility assessment also needs
to consider the impact of reservoir CO2 injection on spoiler or gas channeling，corrosion，calcium and asphaltene deposition，
and point out that the success of CO2 miscible flooding focus is to ensure a higher mixed level of the reservoir and CO2 sweep
efficiency. Based on the reservoir and engineering programs，the feasibility of CO2 miscible flooding can be ensured by the
economic demonstration.

Key words: CO2 miscible flooding, CO2 emissions, greenhouse effect, feasibility assessment, EOR

Tang Yong1, Yin Peng1, Wang Yong2, Sun Bo1, Hou Dali1. Feasibility Assessment of the CO2 Miscible Flooding Process[J]. 西南石油大学学报(自然科学版), DOI: 10.11885/j.issn.1674-5086.2013.09.22.03.

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