液控智能注水井下预置水嘴尺寸优化设计研究  

Study of Optimization Design Method for Downhole Pre-set Water Nozzles Size of Liquid Control Intelligent Water Injection

作　　者：赵广渊[1] 季公明[1] 苏毅 王春林[1] 郭宏峰[1] 杨树坤[1] ZHAO Guangyuan;JI Gongming;SU Yi;WANG Chunlin;GUO Hongfeng;YANG Shukun(Production Optimization Division, China Oilfield Services Limited, Tianjin 300459, China;Tianjin Branch of CNOOC Limited, Tianjin 300459, China)

机构地区：[1]中海油田服务股份有限公司油田生产事业部,天津300459 [2]中海石油(中国)有限公司天津分公司,天津300459

出　　处：《北京石油化工学院学报》2022年第2期30-34,共5页Journal of Beijing Institute of Petrochemical Technology

摘　　要：液控智能注水技术可地面控制调节井下预置水嘴开度,达到分层调配的目的。若井下预置水嘴的尺寸设计不合理,则会导致配水器入井后达不到分层配注量要求,影响分层注水开发效果。以3层分层注水为例,基于油藏各层配注量范围,采用流动节点压力分析方法,提出了一种井下预置水嘴尺寸的优化设计方法,并结合矿场实践中无法获取单层注水指示曲线的情况,通过预设各层嘴后压力,给出井下预置水嘴尺寸的优化设计方法。通过现场应用验证了该水嘴优化设计方法的可行性和合理性。The liquid control intelligent water injection technology can adjust the opening size of downhole water nozzles on surface to achieve the purpose of layered allocation.If the size of downhole water nozzles is not improperly designed,water distributors may not achieve the layered allocation injection rate after run in well.This will have a negative effect on the water flooding development.Taking three-layered water injection for example,an optimization design method for downhole pre-set water nozzles is proposed based on the allocation injection rate range of each layer and flow node pressure analysis.Furthermore,we focus on the problem that injection indication curves of the single-layer are absent in practice.Another optimization design method for downhole pre-set water nozzles is provided through the hypothesis of pressure behind the nozzle.Field application indicates that the optimization design method for downhole pre-set water nozzles is feasible and rational.

关 键 词：液控智能注水 预置水嘴 优化设计 配注量 注水指示曲线 

分 类 号：TE357.8[石油与天然气工程—油气田开发工程]