渤海D油田剖面反转综合治理技术研究  

Study on comprehensive control technology of profile inversion in Bohai D oilfield

作　　者：苑玉静 刘义刚 孟祥海 韩玉贵 赵鹏 YUAN Yujing;LIU Yigang;MENG Xianghai;HAN Yugui;ZHAO Peng(Tianjin Branch of CNOOC,Tianjin 300459,China)

机构地区：[1]中海石油(中国)有限公司天津分公司,天津300459

出　　处：《能源化工》2020年第4期66-70,共5页Energy Chemical Industry

基　　金：“十三五”国家科技重大专项“大型油气田及煤层气开发--渤海油田高效开发示范工程”(2016ZX05058-003)。

摘　　要：为解决渤海D油田实施弱凝胶调驱后出现的剖面反转及优势窜流通道问题,抑制含水回升,从剖面反转形成机理及交替注入延缓剖面反转进程机理出发,以D油田油藏及地质特征为基础,借助物理模拟和数值模拟研究方法,选用调驱效果较好的Cr3+聚合物凝胶作为调驱剂,开展D油田剖面反转综合治理技术探索。研究结果表明:采用Cr^3+聚合物凝胶与水交替的方式进行开发可得到较高的采收率;从技术、经济角度考虑,聚水交替注入体积比选用(4~6)∶1;采用最终采收率增幅较高的“解堵、调剖、堵水、Cr^3+聚合物调驱剂与水交替注入”的综合治理技术,可更好地改善吸液剖面反转现象,更大程度释放油田潜能。In order to solve the problems of profile inversion and predominant channeling-path after implement of weak gel profile control and flooding in Bohai D oilfield,and restrain the water cut recovery,based on the mechanism of profile inversion,and the reservoir and geological characteristics of Bohai D oilfield,with the help of physical simulation and numerical simulation as a research method,the Cr^3+polymer gel with better profile control and flooding effect is specially selected as the profile control and flooding agent,and the comprehensive control technology of profile inversion is studied in Bohai D oilfield.The results show that using Cr^3+polymer gel and water alternative injection method can reach higher recovery efficiency,from a technical and economic point of view,the optimum volume ratio of polymer gel and water alternative injection is(4-6)∶1.Using comprehensive control technology of plug removal,profile control,water plugging,and Cr^3+polymer gel and water alternative injection can reach higher ultimate recovery efficiency,preferably improve the profile reversal,and release oilfield capacity in a greater extend.

关 键 词：剖面反转 CR^3+ 聚合物凝胶 非均质性 交替注入 调剖调驱 堵水 

分 类 号：TE39[石油与天然气工程—油气田开发工程]