利用环形强磁打捞器打捞节流器技术  

Technology of fishing choke with annular strong magnetic fishing device

作　　者：张运科 鲍作帆 鹿成亮 杨晓勇 高秀丽 刘峰 ZHANG Yunke;BAO Zuofan;LU Chengliang;YANG Xiaoyong;GAO Xiuli;LIU Feng(Well Testing Branch,CNPC Bohai Drilling Engineering Co.,Ltd.,Tianjin 300280,China;Oil&Gas Cooperation and Development Company,CNPC Bohai Drilling Engineering Co.,Ltd.,Tianjin 300280,China)

机构地区：[1]中国石油集团渤海钻探工程有限公司油气井测试分公司,河北廊坊065007 [2]中国石油集团渤海钻探工程有限公司油气合作开发分公司,天津300280

出　　处：《油气井测试》2021年第5期28-31,共4页Well Testing

基　　金：中国石油集团渤海钻探工程有限公司油气井测试分公司科技研发项目“长庆气田疑难井节流器打捞工具研究与应用”(CS201708K)。

摘　　要：打捞节流器时,芯杆在中间脱扣后,节流器上半部分易被捞出,下半部分芯杆、卡瓦、胶筒及防砂短节则留在井内,卡瓦散落于芯杆与油管内壁之间的缝隙里,打捞效果差。环形强磁打捞器通过扶正机构与环形磁铁配合使用,实现了井下准确定位穿越芯杆的功能,且强磁随之下探进入芯杆与油管之间的缝隙并靠近卡瓦,实现了强磁对卡瓦的近距离吸附。苏25-41-9井采用环形强磁打捞器将脱落的三块卡瓦全部捞出,并用可退式卡瓦打捞器抓住芯杆成功打捞出残余节流器。环形强磁打捞器是打捞缝隙里的小型卡瓦的有效工具。When fishing the choke,after the core rod trips in the middle,the upper half of the choke is easy to be fished out,and the core rod,slip,rubber barrel and sand control nipple in the lower half are left in the well.Slips are scattered in the gap between the core rod and the inner wall of the tubing,resulting in poor fishing effect.Through the combination of centralizing mechanism and annular magnet,the annular strong magnetic fishing device realizes the function of accurately positioning and passing through the core rod underground,and the strong magnetic then probes down into the gap between the core rod and the oil pipe and close to the slip,realizing the close adsorption of strong magnetic to the slip.In Well Su 25-41-9,the annular strong magnetic fishing device was used to fish out all three slips,and the retractable slip fishing device was used to grasp the core rod to successfully fish out the residual choke.Annular strong magnetic fishing device is effective to fish small slips in the gap.

关 键 词：节流器 环形强磁打捞器 扶正器 卡瓦 芯杆 打捞作业 

分 类 号：TE358[石油与天然气工程—油气田开发工程]