苏德尔特油田强水敏储集层CO_2混相驱试验  

Study on Miscible CO_2 Flooding Test in Strong Water-Sensitive Reservoirs in Sudert Oilfield

作　　者：程杰成[1] 姜洪福 雷友忠[1] 庞志庆[1] 汪艳勇[1] 安平 

机构地区：[1]中国石油大庆油田有限责任公司,黑龙江大庆163453 [2]中国石油大庆油田有限责任公司海拉尔石油勘探开发指挥部,黑龙江大庆163453

出　　处：《新疆石油地质》2016年第6期694-696,共3页Xinjiang Petroleum Geology

基　　金：中国石油科技重大专项(2011E-1216)

摘　　要：针对苏德尔特油田下侏罗统兴安岭组油层水敏性强、注水开发效果差的实际情况,2011年优选B14区块开展了CO_2混相驱试验。实验室细管实验测试原油与CO_2的最小混相压力为16.6 MPa,比原始地层压力低1.0 MPa,可实现CO_2混相驱。矿场试验结果表明,实施CO_2混相驱后,注入能力明显提高,油井产量大幅上升,储集层动用程度增大,构造高部位和人工裂缝方向是受效的优势方向;CO_2混相驱能够为强水敏储集层有效补充能量,不失为改善开发效果和提高采收率的一种新方法。In view of the actual situations such as strong water sensitivity and poor water injection effect of the Lower Jurassic Hinggan res-ervoir in Sudert oil field, the Block B14 was selected for miscible CO_2 flooding test in 2011. The obtained minimum miscible pressure ofcrude oil and CO_2 is 16.6 MPa from slim tube test in laboratory, 1.0 MPa lower than the original formation pressure, which indicates thatmiscible CO_2 flooding could be realized. The field test result shows after the implementation of miscible CO_2 flooding, the injectivity andthe oil production are significantly improved, the reservoir producing degree are increased and the structural high and artificial fracturestrikes are the predominant directions; miscible CO_2 flooding can replenish energy for strong water-sensitive reservoirs effectively, so it couldbe a new method to improve development effect and enhance oil recovery.

关 键 词：海拉尔盆地 苏德尔特油田 CO2驱 CO2混相驱 试验研究 特低渗透油藏 强水敏储集层 

分 类 号：TE357.42[石油与天然气工程—油气田开发工程]