稠油L油藏多轮次吞吐后汽窜通道表征及治理  

Characterization and treatment of steam channeling after multiple cycles of huff and puff in heavy oil L reservoir

作　　者：马良宇 彭业伟 王俊[1] 高云林 蒲超[3] 文联勇 MA Liangyu;PENG Yewei;WANG Jun;GAO Yunlin;PU Chao;WEN Lianyong(China University of Petroleum(Beijing),Beijing 102200,China;Southwest Oil&Gasfield Company,PetroChina,Chengdu 610051,Sichuan,China;Research Institute of Exploration&Development of Daqing Oilfield Company,PetroChina,Daqing 163712,Heilongjiang,China)

机构地区：[1]中国石油大学(北京),北京102200 [2]中国石油西南油气田公司,四川成都610051 [3]中国石油大庆油田勘探开发研究院,黑龙江大庆163712

出　　处：《石油地质与工程》2024年第5期53-57,63,共6页Petroleum Geology and Engineering

摘　　要：稠油L油藏经历多轮次蒸汽吞吐后,出现井间汽窜频繁、剩余油分散、周期油气比低等问题,油田稳产难度大。通过总结L油藏的汽窜规律及影响因素,基于数值模拟分析L油藏各小层不同含油饱和度范围内的油藏温度和对应的孔隙体积倍数,定量表征了地下窜流程度。基于定量化的井组汽窜程度研究3种汽窜治理技术的开采效果,包括小区域多井组合吞吐、汽窜通道控制下的变形井网蒸汽驱、氮气泡沫辅助蒸汽驱。结果表明,氮气泡沫辅助变形井网蒸汽驱可有效治理汽窜,当油汽比降至0.1以下时,全区累计产油量为24.87×10^(4)t,采收率为50.76%,研究结果对改善油藏多轮次吞吐后开发效果具有重要作用。After multiple cycles of steam huff and puff in heavy oil L reservoir,there are some problems such as frequent inter-well steam channeling,dispersion of remaining oil and low periodic oil-gas ratio,which makes it difficult to stabilize oil production.By summarizing the gas channeling patterns and influencing factors of L reservoir,and based on numerical simulation analysis of the reservoir temperature and corresponding pore volume multiples within different oil saturation ranges of each sub layer,the degree of underground gas channeling was quantitatively characterized.Based on the quantified steam channeling degree of well group,the production effect of three kinds of steam channeling control technologies is studied,including multi-well combination huff and puff in small area,steam flooding with deformable well pattern under the control of steam channeling channel and nitrogen foam assisted steam flooding.The results show that steam flooding with nitrogen foam-assisted and deformable well pattern can effectively control steam channeling.When the oil-vapor ratio drops below 0.1,the cumulative oil production is 24.87×10^(4)t,and the recovery rate is 50.76%.The research results play an important role in improving the development effect after multiple huff and puff.

关 键 词：稠油油藏 汽窜表征 组合吞吐 变形井网蒸汽驱 氮气泡沫 热复合驱 

分 类 号：TE357[石油与天然气工程—油气田开发工程]