FMB系列防蠕动扩张式封隔器研制及应用  

Development and Application of Anti-creep Expandable Packer

作　　者：李永康 孙金峰 何海峰[2] 刘晋伟 张卫卫 罗杨 LI Yongkang;SUN Jinfeng;HE Haifeng;LIU Jinwei;ZHANG Weiwei;LUO Yang(Petroleum Engineering Research Institute,SINOPEC Shengli Oilfield Company,Dongying 257000,China;Gudong Oil Production Plant,SINOPEC Shengli Oilfield Company,Dongying 257237,China)

机构地区：[1]中国石化胜利油田分公司石油工程技术研究院,山东东营257000 [2]中国石化胜利油田分公司孤东采油厂,山东东营257237

出　　处：《石油矿场机械》2020年第5期56-60,共5页Oil Field Equipment

基　　金：国家科技重大专项“胜利油田特高含水期提高采收率技术”(2016ZX05011-004)。

摘　　要：针对常规扩张式封隔器锚定力小、寿命短的问题,设计了防蠕动扩张式封隔器。设计胶筒锚定结构,实现封隔器自身的锚定功能,避免钢性锚定对套管的损伤;优化胶筒表面结构,提高胶筒锚定力;设计锚定传力液缸,降低注入流体对封隔器寿命的影响。该封隔器具有2种解封方式,既满足正常生产时的反洗井需求,又降低配套管柱后期的检换风险。室内试验及现场应用表明,其锚定性能较常规封隔器提高30%以上,可有效降低管柱蠕动影响,延长分注管柱寿命,提高水驱油藏开发水平。可广泛应用于出砂、吐聚油藏的分注井。Aiming at the problems of small anchoring force and short service life of conventional expandable packers,anti-creeping expandable packer was designed.By the rubber anchoring structure,the packer's own anchoring function can be achieved and the damage of steel anchoring tools to the casing is avoided.The surface structure of the rubber was optimized and the anchoring force was improved.An anchor force transmission cylinder was designed to reduce the impact of injected fluid on the life of the packer.The packer has two types of unsealing methods,which can not only meet the requirements of backwash wells during normal production,but also reduce the risk of later replacement of the supporting pipe string.Laboratory experiments and field applications show that its anchoring performance is improved by more than 30%compared with the conventional one,which can effectively reduce the influence of string creep,extend the service life of separate injection string,and improve the development level of water drive reservoir.It can be widely applied to separate injection wells in sand production and polymer expulsion reservoirs.

关 键 词：分层注水 封隔器 胶筒 防蠕动 锚定力 

分 类 号：TE931.203[石油与天然气工程—石油机械设备]