东海水驱气藏开发特征及开发对策实践  

Development Characteristics and Countermeasures Practice of Water Drive Gas Reservoir in East China Sea

作　　者：李久娣 田彬 LI Jiudi;TIAN Bin(SINOPEC Shanghai Offshore Oil&Gas Company,Shanghai 200120,China;Insititute of Exploration and Development,SINOPEC Shanghai Offshore Oil&Gas Company,Shanghai 200120,China)

机构地区：[1]中国石油化工股份有限公司上海海洋油气分公司,上海200120 [2]中国石油化工股份有限公司上海海洋油气分公司勘探开发研究院,上海200120

出　　处：《海洋石油》2023年第4期8-12,17,共6页Offshore Oil

摘　　要：东海已开发气藏主要分布在XH凹陷的中央背斜带以及西部斜坡带,气藏类型主要以水驱气藏为主,气藏投入开发后普遍面临产水难题,影响气藏采收率。为有效提高东海水驱气藏开发效果,通过对已开发水驱气藏开发特征进行系统分析,总结不同开发阶段产水特征及其主控因素,建立了“早期防水、过程控水、后期排水”的全周期防水治水策略,并开发出了水平井井轨迹优化、水平井变密度定向射孔等配套技术。通过采用全周期的防水治水开发对策,东海水驱气藏气井无水采气期显著提高,气井产后通过采用合理的排采措施,有效提高产水气井累产水平。The developed gas reservoirs in East China Sea are mainly distributed in the central anticline belt and the western slope belt of XH Depression.The gas reservoir type is mainly water drive gas reservoir.After the gas reservoir is put into development,it is generally faced with the problem of water production,which affects the recovery of gas reservoir.In order to effectively improve the development effect of water drive gas reservoirs in East China Sea,the development characteristics of developed water drive gas reservoirs was systematically analyzed,and the water production characteristics and main controlling factors in different development stages were summarized.A full-cycle waterproof and water control strategy of'early waterproof,process water control and later drainage'was established,and supporting technologies such as horizontal well trajectory optimization and horizontal well variable density directional perforation were developed.Through the use of full-cycle water-proof and water-control development countermeasures,the water-free gas recovery period of gas wells in East China Sea water-drive gas reservoir has been significantly improved.After the gas well is produced,reasonable drainage measures are adopted to effectively improve the cumulative production level of water-producing gas wells.

关 键 词：水驱气藏 防水治水 开发特征 开发对策 排水采气 

分 类 号：TE37[石油与天然气工程—油气田开发工程]