基于特低渗油藏注CO_(2)吞吐参数敏感性分析  

Sensitivity analysis of CO_(2) huff and puff parameters based on ultra‑low permeability reservoir

作　　者：刘浩 刘嘉豪 LIU Hao;LIU Jiahao(College of Petroleum Engineering,Xi'an Shiyou University,Xi'an 710065,China)

机构地区：[1]西安石油大学石油工程学院,陕西西安710065

出　　处：《精细石油化工进展》2023年第1期24-28,33,共6页Advances in Fine Petrochemicals

摘　　要：针对我国西部地区X特低渗油田,采用CO_(2)吞吐技术提高原油采收率,对CO_(2)吞吐技术的相关参数进行敏感性研究,便于了解油田剩余油分布,及时调整开发方案,降低油田开发风险,高效、绿色开发油田。利用CMG软件定性和定量分析注入时长、日注气量、注入时机以及焖井时长这4个参数对提高采收率效果的影响。结果表明:各参数对提高油田采收率的影响程度不同,由大到小依次为注入时长、日注气量、注入时机、焖井时长。注入时长为CO_(2)吞吐技术提高采收率的主要影响因素,占比63%;焖井时长影响最小,占比0.11%。The CO_(2) huff and puff technology was used to improve oil recovery in X ultra-low permeability oilfield in western China,and the sensitivity of related parameters of CO_(2) huff and fuff technology was studied.It is convenient to guide the oil field to understand the remaining oil distribution,adjust the development plan in time,reduce the risk of oil field development,and develop the oil field efficiently and green.CMG software was used to analyze qualitatively and quantitatively the effect of injection time,daily gas injection rate,injection timing and soak time on EOR.Results showed that the influence degree of each parameter was different,from large to small was injection time,daily gas injection,injection time,soak well time.Injection duration was the main factor affecting the recovery efficiency of CO_(2) huff and puff technology,accounting for 63%,while the influence of the soaking duration was the least,accounting for 0.11%.

关 键 词：特低渗油藏 CO_(2)吞吐技术 原油采收率 剩余油开发 

分 类 号：TE357.7[石油与天然气工程—油气田开发工程]