调剖剂对采出液稳定性影响的实验研究  

Study on the influence of compound profile control agent on the stability of produced fluid

作　　者：曾志强 赵伟 靖波[2] 华朝[2] 尹先清[1] ZENG Zhi-qiang;ZHAO Wei;JING Bo;HUA Zhao;YIN Xian-qing(College of Chemical and Environmental Engineering,Yangtze University,Jingzhou 434023,China;State Key Laboratory of Offshore Oil Exploitation,CNOOC Research Institute,Beijing 100028,China)

机构地区：[1]长江大学化学与环境工程学院,湖北荆州434023 [2]中海油研究总院海洋石油高效开发国家重点实验室,北京100028

出　　处：《应用化工》2022年第7期1943-1945,1949,共4页Applied Chemical Industry

基　　金：“十三五”国家科技重大专项项目(2016ZX05025-003)。

摘　　要：通过实验室模拟某油田的油藏环境,探究了采出液中调剖剂残余量对采出液的稳定性的影响,以ζ电位绝对值、油水界面张力、油中含水率、水中含油率作为稳定性评价指标,最后确定最佳调剖剂残余量,用于指导调剖工艺设计。结果表明,地面采出液中调剖剂残余量控制在30%内最佳,在此范围内油中含水率、水中含油率均低于50%,ζ电位绝对值在5.2 mV上下振动,界面张力在2.2 mN/m上下振荡,采出液体系更容易遭到破坏,采收率高,利于后续处理。The influence of the residual amount of profile control agent in produced liquid on the stability of produced liquid was studied by simulating the reservoir environment of a certain oilfield in laboratory.The ζ potential absolute value, oil-water interfacial tension, water content and oil content in oil were taken as the stability evaluation indexes.Finally, the optimal residual amount of profile control agent was determined to guide the design of profile control process.The results show that the residual amount of profile control agent in surface produced liquid should be controlled within 30%,the water content and oil content in oil are both lower than 50%,the absolute value of ζ potential vibrates up and down 5.2 mV,the interfacial tension oscillates up and down 2.2 mN/m, and the produced liquid system is easier to be destroyed and the recovery rate is higher, which is beneficial to subsequent treatment.

关 键 词：调剖剂 稳定性 ζ电位绝对值 

分 类 号：TQ079[化学工程] TE39[石油与天然气工程—油气田开发工程] O69[理学—化学]