海上油田同源闭式注水流量控制装置研究与应用  

Research and Application of Flow Control Device for Same-Source Closed Water Injection in Offshore Oilfield

作　　者：赵广渊 杨树坤[1,2,3] 李越 任培培[1,2,3] 郑玉飞 蔡洪猛[1,2,3] 黄泽超 Zhao Guangyuan;Yang Shukun;Li Yue;Ren Peipei;Zheng Yufei;Cai Hongmeng;Huang Zechao(State Key Laboratory of Offshore Oil and Gas Exploitation;Tianjin Key Laboratory of Offshore Difficult-to-Recover Reserves Exploitation;Production Optimization Business Division,China Oilfield Services Limited;Tianjin Branch,CNOOC(China)Co.,Ltd.)

机构地区：[1]海洋油气高效开发全国重点实验室,天津市300459 [2]天津市海洋石油难动用储量开采重点实验室 [3]中海油田服务股份有限公司油田生产事业部 [4]中海石油(中国)有限公司天津分公司

出　　处：《石油机械》2025年第3期45-51,共7页China Petroleum Machinery

基　　金：国家自然科学基金企业创新发展联合基金重点项目“多元供氢体系协同纳米催化剂原位定向裂解重油强化开采机理与方法研究”(U22B20145)。

摘　　要：同源闭式注水工艺兼具生产和注水功能,管柱结构较为复杂,注水温度也较高,同时传统的投捞水嘴式流量调节方式存在调节效率低、大斜度井不适用等不足。为此,在优选控制方式的基础上,优化设计了流量控制装置的关键结构和参数,形成了适用于多井同源闭式注水的多级液控流量控制装置,通过地面性能试验验证了流量控制装置耐高温高压、大排量调节的性能。试验和现场应用结果表明:多级液控流量控制装置满足150℃高温、60 MPa高压生产条件,换挡机构可满足3600次挡位调节,满足3000 m^(3)/d大排量注水和12级流量精细调节;装置的动密封和换挡结构设计合理,应用可靠性高,可实现地面控制调节井下水嘴开度,配套的同源闭式注水调配技术满足海上油田多井同源闭式注水分层调配需求。研究结果可为海上油田同源闭式注水工艺提供技术支撑。The same-source closed water injection process functions for both production and injection,and adopts a complex string structure and a relatively high injection temperature.Moreover,the traditional fishing nozzletype flow regulation method is disadvantageous for low efficiency and inapplicability to high-inclination wells.In this paper,based on the optimization of flow control method and key structures/parameters,a multistage hydraulic flow control device for same-source closed water injection in multiple wells was developed.The device was verified through surface performance test with respect to high temperature/pressure resistance and high-rate regulation performance.Test and field application demonstrate that the multistage hydraulic flow control device works well under high temperature(150℃)and high pressure(60 MPa)conditions.The stage shift mechanism allows for 3600 downhole stage shifts,thus enabling a water injection at a high rate(3000 m^(3)/d)and a precise 12-stage flow regulation.The dynamic seal and stage shift mechanism are rational and reliable,and facilitate the surface control on opening of downhole nozzle.The associated allocation technology meets the requirements of layered allocation in same-source closed water injection in multiple wells.The research results provide a technical support to the implementation of same-source closed water injection process in offshore oilfields.

关 键 词：海上油田 多级流量控制装置 闭式注水 液压控制 水嘴调节 动密封 

分 类 号：TE934[石油与天然气工程—石油机械设备]