连续管钻井电动定向器齿轮传动设计与试验  

Design and Testing of Electric Whipstock with Gear Transmission for Coiled Tubing Drilling

作　　者：朱玉杰 胡亮 贾朋 ZHU Yujie;HU Liang;JIA Peng(Sinopec Research Institute of Petroleum Engineering Co.,Ltd.,Beijing,102206,China;College of Pipeline and Civil Engineering,China University of Petroleum(East China),Qingdao,Shandong,266580,China)

机构地区：[1]中石化石油工程技术研究院有限公司,北京102206 [2]中国石油大学(华东)储运与建筑工程学院,山东青岛266580

出　　处：《石油钻探技术》2025年第2期97-106,共10页Petroleum Drilling Techniques

基　　金：中国石化科技攻关项目“连续管钻井传测控一体化技术研究”(编号:P20024);“连续管钻井随钻测控关键技术研究”(编号:P25004)资助。

摘　　要：定向器是连续管钻井中实现定向作业的必备工具,其中电动定向器能够连续准确地调整工具面角,具有很大的技术优势,但受限于井下狭小径向空间和定向作业大扭矩要求,其中关键部件齿轮减速器是设计的难点。设计了一种基于大扭矩电机和多级行星齿轮减速器相配合的电动定向器,对其行星减速齿轮进行了优化,以弯曲疲劳强度安全系数、接触疲劳强度安全系数和输出扭矩3个关键参数的乘积为优化依据,得到了在要求空间下的最优齿数比,并对其进行了有限元强度校核和实际承载能力室内试验。研究结果表明,电动定向器两级行星齿轮减速器的实际承载能力大于800 N·m的设计目标,瞬时可达1260 N·m,满足现场连续管钻井定向作业要求。研究结果为今后电动定向器设计和加工组装提供了参考。Whipstock is essential for directional drilling with coiled tubing,and the electric whipstock offers great technical advantages with its ability to make continuous and accurate tool face angle adjustments.However,due to narrow downhole radial space and high torque requirements for directional drilling,the design of the key structure in the electric whipstock,namely the gear reducer,becomes a difficult point of development.Therefore,a kind of electric whipstock based on a high-torque motor and multi-stage planetary gear reducer was designed,and the planetary gear reducer was optimized.The product of three key parameters,i.e,bending fatigue strength safety factor,contact fatigue strength safety factor,and output torque,was used as the basis for optimization so that the optimal gear ratio was obtained under the required space,and the finite-element strength calibration and the actual load carrying capacity of the gear reducer tests were carried out.The results show that the actual load bearing capacity of the designed two-stage planetary gear reducer of the electric whipstock exceeds the design target of 800 N·m,and the instantaneous capacity can reach 1260 N·m,which meets the requirements of directional drilling operation of the coiled tubing drilling in the field.The research results can provide a reference for the design and processing assembly of future electric whipstock.

关 键 词：连续管钻井 电动定向器 行星齿轮减速器 齿数比 

分 类 号：TE242[石油与天然气工程—油气井工程] TE921.2