渤海油田可反洗测调一体分层注水工艺  

An Improved Integrated Reverse Washing,Measuring and Adjusting Zonal Water Injection Process in the Bohai Oilfield

作　　者：郭宏峰[1] 杨树坤[1] 段凯滨 季公明[1] 史景岩 安宗辉 GUO Hongfeng;YANG Shukun;DUAN Kaibin;JI Gongming;SHI Jingyan;AN Zonghui(Production Optimization Division,China Oilfield Services 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

出　　处：《石油钻探技术》2020年第3期97-101,共5页Petroleum Drilling Techniques

摘　　要：为解决渤海油田常规分注工艺反洗井难、调配效率及调配合格率低的问题,开展了可反洗测调一体分层注水研究。通过配套测调一体配水器、可反洗井封隔器,优化防砂、注水管柱结构,实现了不动管柱反洗井和测调一体功能,形成了渤海油田可反洗测调一体分层注水工艺。渤海油田10口注入困难的井应用该工艺进行了不动管柱反洗井作业,并进行了30井次的调配作业。现场应用结果表明,反洗井工具性能可靠,开关灵活,洗井效果良好,缓解了注水压力升高现象,降低了酸化频次;测调效率显著提高,平均单井调配周期仅需10 h,相较常规分注工艺调配周期2~3 d大幅降低。可反洗测调一体分层注水工艺的成功应用,验证了该工艺的可行性,为渤海油田分层注水开发提供了新的技术手段。The Bohai Oilfield has experienced challenges with its conventional zonal injection processes.Specifically,there have been difficulties with reverse washing,along with low distributing efficiency and low distributing qualified rate.To improve the situation,a study was carried out on the integrated reverse washing,measuring and adjusting zonal water injection process.By developing the integrated measuring/adjusting water distributor and reverse washing packer,the structures of sand control and water injection strings were optimized,and the integrated reverse washing/measuring/adjusting function with fixed string were achieved,thus forming the integrated reverse washing,measuring and adjusting zonal water injection process in the Bohai Oilfield.This process was applied in 10 wells that had difficulty in water injection.In fact,thirty well times of distribution adjustment were performed in the Bohai Oilfield.Field applications suggested that the performance of reverse washing tool was reliable,the switching was flexible,and the well washing effect was good,which effectively alleviated the increased water injection pressure and reduced the frequency of acidizing.The measuring/adjusting efficiency was significantly improved,and the average single well distribution adjustment cycle was shortened to 10 hours,which was significant shorter than that of the conventional zonal injection processes(2–3 days).The successful applications of the integrated reverse washing,measuring and adjusting zonal water injection process verified the feasibility of this process and provided new technical ideas for the zonal water injection development of Bohai Oilfield and thereby improve the efficiency of acidizing.

关 键 词：分层注水 测调一体 反循环 洗井 渤海油田 

分 类 号：TE357.6[石油与天然气工程—油气田开发工程]