首页 | 本学科首页   官方微博 | 高级检索  
     

沙一下油藏CO2混相驱替提高采收率的研究
引用本文:杨松,鲍荣. 沙一下油藏CO2混相驱替提高采收率的研究[J]. 精细石油化工进展, 2012, 13(10): 20-23
作者姓名:杨松  鲍荣
作者单位:长江大学教育部油气资源与勘探技术重点实验室,荆州,434023
摘    要:以沙一下区块油藏为对象,研究了CO2混相驱技术可行性及提高采收率,通过PVT实验和细管模拟实验,确定了油藏原油的最小混相压力为18.41 MPa,原油采收率达90.01%。实验结果表明,注气驱达到混相压力后,注入压力对驱油效率影响不大,而在混相压力以下的近混相区,注入压力对驱油效率影响非常大。通过长岩心驱替模拟实验,对比了水驱和CO2驱替效率,结果表明CO2混相驱提高采收率达40.8%。

关 键 词:提高采收率  沙一下  混相驱  细管实验

Research on Increasing Recovery Efficiency in Shayixia Oil Reservoir by CO2 Miscible Displacement Agent
Yang Song , Bao Rong. Research on Increasing Recovery Efficiency in Shayixia Oil Reservoir by CO2 Miscible Displacement Agent[J]. Advances in Fine Petrochemicals, 2012, 13(10): 20-23
Authors:Yang Song    Bao Rong
Affiliation:Yang Song Bao Rong (Key Laboratory of Oil and Gas Resource & Exploration Technology of Education Ministry, Yangtze University, Jingzhou 434023)
Abstract:The feasibility of the application of CO2 miscible displacement technology and the mechanism of increasing the recovery efficiency in Shayixia Oil Reservoir were studied. The minimum miscibility pressure, i.e. 18.41 MPa, of the crude oil in the reservoir was identified in PVT experiment and slim tube simulation experiment, and the crude oil recovery efficiency was increased to 90. 01%. According to results of experiment and test, the injection pressure has little effect on oil flooding efficiency after the miscibility pressure is reached by injecting the gas flooding agent, and has significant effect on oil flooding efficiency in the near - miscible zone in which the pressure is lower than the miscibility pressure. The oil displacement efficiency of water flooding agent and that of CO2 miscible displacement agent were compared in long core displacement simulation test, and the results of test have shown that the recovery efficiency can be increased by 40.8% after CO2 miscible displacement agent-is used.
Keywords:increasing recovery efficiency  Shayixia  miscible displacement  slim tube experiment
本文献已被 CNKI 维普 万方数据 等数据库收录!
设为首页 | 免责声明 | 关于勤云 | 加入收藏

Copyright©北京勤云科技发展有限公司  京ICP备09084417号