石油化工高等学校学报

石油化工高等学校学报 ›› 2018, Vol. 31 ›› Issue (02): 61-64.DOI: 10.3969/j.issn.1006-396X.2018.02.011

• 石油工程 • 上一篇    下一篇

延长油田CO2驱相态初探

杨永超姚振杰   

  1. (陕西延长石油(集团)有限责任公司研究院,陕西 西安 710075)
  • 收稿日期:2017-11-27 修回日期:2017-12-14 出版日期:2018-04-26 发布日期:2018-04-25
  • 通讯作者: 姚振杰(1985-),男,工程师,从事油田开发及提高采收率技术方面的研究;E-mial:155239211@qq.com
  • 作者简介:杨永超(1968-),男,高级工程师,从事提高采收率技术的研究;E-mail: 896195297@qq.com
  • 基金资助:
    国家重点研发计划资助项目(6YFE0102500);陕西省科技统筹创新工程计划项目(2014KTZB03-02)

Preliminary Exploration of CO2 Flooding Phase of Yanchang Oilfield

Yang YongchaoYao Zhenjie   

  1. (Institute of Shaanxi Yanchang Petroleum (Group) Co.,Ltd.,Xi’an Shaanxi 710075,China)
  • Received:2017-11-27 Revised:2017-12-14 Published:2018-04-26 Online:2018-04-25

摘要: 为了研究延长油田J区块CO2驱相态,根据细管实验得到工区最小混相压力,考虑地层破裂压力计算井口最大注气压力,结合工区目前井口注气压力分析了CO2驱相态。结果表明,工区CO2驱最小混相压力为22.2 MPa,井底破裂压力为33.88 MPa,井口最大注气压力可达15.8 MPa;目前工区单井最高注气压力为10.5 MPa,对应注气井底压力为19.1 MPa,低于最小混相压力,属于非混相驱油。当井口注气压力提高到15.0 MPa时,注气井底压力为23.6 MPa,高于最小混相压力,注气井近井地带存在混相区。

关键词: 延长油田, CO2驱, 相态, 注气压力, 非混相

Abstract: Phase of CO2 flooding is studied, combining with MMP and maximum gas injection pressure in the study area. The results show that the MMP is 22.2 MPa. The fracture pressure of formation is 33.88 MPa. The maximum gas injection pressure of wellhead is 15.8 MPa. The gas injection pressure is 10.5 MPa, and corresponding injection gas pressure of well bottom is 19.1 MPa. CO2 flooding belongs to immiscible flooding. When the gas injection pressure of wellhead is increased to 15.0 MPa, the bottom hole pressure is 23.6 MPa, which is higher than the minimum miscible pressure, there is miscible zone near the well area in the gas injection well.

Key words: Yanchang oilfield, CO2 flooding, Phase, Injection pressure, Immiscible

引用本文

杨永超,姚振杰. 延长油田CO2驱相态初探[J]. 石油化工高等学校学报, 2018, 31(02): 61-64.

Yang Yongchao,Yao Zhenjie. Preliminary Exploration of CO2 Flooding Phase of Yanchang Oilfield[J]. Journal of Petrochemical Universities, 2018, 31(02): 61-64.

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