均衡优化设计在南海气田射孔作业中的应用  

Application of balanced optimization design in gasfield of South China Sea

作　　者：刘婕 张贺举 吴其林 秦圆明 史双龙 吴美洁 吴敏熵 LIU Jie;ZHANG Heju;WU Qilin;QIN Yuanming;SHI Shuanglong;WU Meijie;WU Minshang(Zhanjiang Branch Research Center,CNOOC Energy Development Co.,Ltd.,Zhanjiang Guangdong 524057,China;College of Petroleum Engineering,Guangdong Institute of Petrochemical Technology,Maoming Guangdong 525000,China)

机构地区：[1]中海油能源发展股份有限公司工程技术湛江分公司研究中心,广东湛江524057 [2]广东石油化工学院石油工程学院,广东茂名525000

出　　处：《石油化工应用》2022年第6期25-29,共5页Petrochemical Industry Application

基　　金：广东省教育厅普通高校特色创新项目,项目编号:2020KTSCX084。

摘　　要：海上深水气田因其地理位置、自然环境的特殊性,对生产设备及开发技术的要求严格,开发过程相对比较困难。南海L气田为高孔高渗高产的大型深水气田,气藏类型以弱边水、弱底水驱为主。根据海上水驱气田开发规律,对于弱水驱气藏来说,控制采气速度,保证气藏持续平稳生产是关键。在设计L气田3井区A6井的射孔方案时,结合油藏工程计算方法及数值模拟技术进行了生产井的分层均衡优化设计,分析结果表明:通过射开合理的产层长度,使气组之间的产能比和配产比基本一致,均衡开采,可减少气田见水风险,提高采收率。Due to the particularity of its geographical location and natural environment,offshore deep-water gasfields have strict requirements for production equipment and development technology,and the development process is relatively difficult.The South China Sea L gasfield is a large deep-water gasfield with high porosity,high permeability and high yield.The gas reservoir types are mainly weak edge water and weak bottom water drive.According to the development law of offshore water drive gasfield,for weak water drive gas reservoir,controlling gas production rate and ensuring continuous and stable production of gas reservoir are the key.When designing the perforation scheme of well A6 in well block 3 of L gasfield,the layered equilibrium optimization design of production wells is carried out in combination with reservoir engineering calculation method and numerical simulation technology.The analysis results show that by shooting a reasonable production layer length,the productivity ratio and production allocation ratio between gas groups are basically the same,and balanced production can reduce the risk of water breakthrough in the gasfield and improve oil recovery.

关 键 词：深水气田 射孔方案 油藏工程计算方法 数值模拟 均衡优化开采 

分 类 号：TE375[石油与天然气工程—油气田开发工程]