浅层取换套修井作业的井口切割装置设计与分析  

Research on Key Technologies of a New Type of Surface Cutting Device for Shallow Layer Well Servicing Operations

作　　者：田浩然 刘玉国 吕玮 于洁 张永健 邱玉威 纪仁杰[2] TIAN Haoran;LIU Yuguo;LU Wei;YU Jie;ZHANG Yongjian;QIU Yuwei;JI Renjie(Research Institute of Petroleum Engineering Technology,Shengli Oilfield Branch,China Petroleum&Chemical Corporation,Dongying 257000,China;China University of Petroleum(East China),Qingdao 266580,China)

机构地区：[1]中石化胜利油田分公司石油工程技术研究院,山东东营257000 [2]中国石油大学(华东),山东青岛266580

出　　处：《石油矿场机械》2024年第3期25-31,共7页Oil Field Equipment

基　　金：中国石油化工股份有限公司科技攻关项目“浅层取换套关键工具与装置研制”(321033)。

摘　　要：在油井下井过程中,套管钳会对套管的连接螺纹产生损伤,套管在井中也容易受到腐蚀,导致取换过程中套管卸扣困难,需要对套管进行迅速的切割处理。然而,由于井口作业的空间有限,现有的套管取换方法费用高、周期长、动力紧张且油田生产现场不能出现明火。基于此,设计一种包括扶正机构、切割机构、传动机构、切割刀具四部分的浅层取换套修井作业的井口切割装置。通过ANSYS等软件对主要零部件进行分析,结果表明:该装置具有体积小、安装方便、切割工作安全可靠、切割效率高等优点,可实现快速切割套管的功能,从而提高作业效率,降低成本。During the downhole process of an oil well,the casing tongs can damage the connecting thread of the casing.After a long time in the well,the casing is easily corroded,which makes it difficult to untie the casing during the replacement process,and the casing needs to be cut quickly.However,the limited space for wellhead operations restricts existing casing replacement methods due to their high cost,long cycle,tight power,and prohibition of open flames at the oilfield production site.To address this issue,this paper has proposed a wellhead cutting device for shallow casing replacement,which consists of four parts:centralizing mechanism,cutting mechanism,transmission mechanism,and cutting tool.The main parts were analyzed by software such as ANSYS,and the results show that the device has the advantages of small size,fast installation,safe and reliable cutting work,and high cutting efficiency.It enables quick cutting of casings,improves operational efficienc,and reduces costs.

关 键 词：切割装置 切割速度 套管 应力分布 

分 类 号：TE921.4[石油与天然气工程—石油机械设备]