西南石油大学学报(自然科学版)

• 石油与天然气工程 • 上一篇    下一篇

CO2 混相驱的可行性评价

汤勇1,尹鹏1,汪勇2,孙博1,侯大力1   

  1. 1.“油气藏地质及开发工程”国家重点实验室· 西南石油大学,四川成都610500
    2. 中国石油大学(北京)提高采收率研究院,北京昌平102249
  • 出版日期:2014-04-01 发布日期:2014-04-01
  • 基金资助:

    国家油气重大专项(2011ZX05016–006);中国石油科技创新基金(2012D–5006–0201)。

Feasibility Assessment of the CO2 Miscible Flooding Process

Tang Yong1, Yin Peng1, Wang Yong2, Sun Bo1, Hou Dali1   

  1. 1. State Key Laboratory of Oil and Gas Reservoir Geology and Exploitation,Southwest Petroleum University,Chengdu,Sichuan 610500,China
    2. Research Institute of Enhanced Oil Recovery,China University of Petroleum(Beijing),Changping,Beijing 102249,China
  • Online:2014-04-01 Published:2014-04-01

摘要:

CO2 驱是提高原油采收率和实现温室气体埋存的双赢举措,在中国具有广泛的应用前景。开展CO2 混相驱
可行性评价是CO2 驱矿场实施的重要基础。基于文献和矿场经验,分析了CO2 混相驱的不利因素,指出了CO2 混相
驱过程中需要重点考虑的问题以及发展趋势。提出CO2 混相驱可行性评价主要包括:油藏筛选、室内实验评价、油藏
数值模拟、经济风险评价、先导试验等环节,并对各个环节进行了分析。同时认为,可行性评价还需要考虑CO2 注入
过程中对储层、扰流或气窜、腐蚀、钙质与沥青质沉积等的影响,指出CO2 混相驱成功的重点是保证油藏中较高的混
相程度和CO2 波及效率,在油藏方案和工程方案基础上,通过经济效益论证才能保障CO2 混相驱的可行性。

关键词: CO2 混相驱, CO2 排放, 温室效应, 可行性评价, 提高采收率

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