摘要
针对大港油田T区块地面采出液含水率高、注采关系不完善等问题,开展了同井注采井网重构现场试验。在不钻新井的情况下,对T区块注采井网进行优化调整,将原来的5注16采调整为13注18采,注采井数比更为合理。通过调整注采井网,改变了原来的驱替方向,分流线上的剩余油得到了有效动用,注采对应率由87.8%提高到100%,水驱控制程度由75%提高到95%。区块现场试验表明,同井注采技术可以大幅度降低地面产液量,增加原油产量,加快地层水循环,提高驱替效率,对特高含水油田经济有效开发具有重要意义。
In order to solve the problems of high water cut in the produced fluid at surface and imperfect injection-production relationship in Block T of Dagang Oilfield,the field test for well pattern reconstruction with injectionproduction in the same well was carried out.Without drilling new wells,the injection-production well pattern in Block T was optimized and adjusted,and the original well pattern with 5 injectors and 16 producers were adjusted to 13 injectors and 18 producers,which made the ratio of injection-production wells more reasonable.By adjusting the injection-production well pattern,the original flooding displacement direction was changed,and the residual oil on the diverting line was effectively produced.Therefore,the injection-production correspondence rate was increased from 87.8%to 100%,and the water flooding control degree was increased from 75%to 95%.The field test of the block showed that the injection-production technology in the same well could greatly reduce the liquid production at surface,increase the crude oil production,accelerate the formation water circulation,and improve the flooding displacement efficiency,which is of great significance for the economical and effective development of oilfields with ultra-high water cut.
作者
李巍巍
马志权
郑学成
王洪海
杨安萍
Li Weiwei;Ma Zhiquan;Zheng Xuecheng;Wang Honghai;Yang Anping(Production Technology Institute of Daqing Oilfield Limited Company;Heilongjiang Provincial Key Laboratory of Oil and Gas Reservoir Stimulation)
出处
《采油工程》
2022年第3期50-54,100,共6页
Oil Production Engineering
基金
中国石油天然气股份有限公司“十四五”重大专项“低成本采油采气关键技术及装备研究”课题5“井下油水分离及同井注采技术与装备研究”(2021DJ4605)
关键词
同井注采
井网重构
特高含水
驱替方向
经济开采
injection-production in the same well
reconstruction of well pattern
ultra-high water cut
flooding displacement direction
economic development
