钻探工程2024，Vol.51Issue(6)：99-105,7.DOI:10.12143/j.ztgc.2024.06.012
螺杆钻具三卡瓦偏心打捞筒的研制及应用
Development and application of eccentric fishing barrel with three slips for screw drilling tools
摘要
Abstract
During the drilling process,accidents of screw drilling tools breaking and falling often occur.For lightweight falling objects caused by accidents such as detachment of the outer shell of the screw drilling tool and core pulling due to rotor fracture,the applicability and success rate of using conventional slip salvage barrels are insufficient.Based on this,a screw drilling tool three slip eccentric fishing barrel was designed,which drives the upper,middle,and lower slips to contract and clamp the conjugate annular space through the conical guide surface of the fishing barrel,achieving effective fishing of this type of falling objects.The eccentric arrangement structure design of the three slips increases the effective clamping area and improves the comprehensive fishing force of the fishing barrel on the screw drilling tool.Based on the working principle of the fishing barrel,a calculation formula for the conventional clamping force of the slip and the squeezing clamping force was established.By comparing,it was found that the conventional clamping stress of the slip required for the three eccentric fishing barrel can be reduced by 50.46%,and the bite depth of the fishing tool can be reduced by 13.92%.The trial produced fishing tube has been put into salvage practice on the construction site,indicating that its structural design is reasonable and its salvage performance is reliable.关键词
螺杆钻具/打捞工具/轻质"落鱼"/偏心结构/三卡瓦偏心打捞筒Key words
screw drilling tools/fishing tools/lightweight falling objects/eccentric structure/three slips eccentric fishing barrel分类
天文与地球科学引用本文复制引用
麻坦..螺杆钻具三卡瓦偏心打捞筒的研制及应用[J].钻探工程,2024,51(6):99-105,7.基金项目
山东省级地勘基金项目"矿山应急救援大口径定向快速钻探技术研究及应用"(编号:SDGP370000000202102003484) （编号:SDGP370000000202102003484）
