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申请号:201911295737.X 公开号:CN111075347A 主分类号:E21B4/14
摘要:【中文】本发明提供一种扭力冲击器,包括传动轴、涡轮、扭力传导接头和若干对扭力发生装置,传动轴上端通过上轴承座连接上接头,传动轴下端通过下轴承座连接下接头,下接头下端连接钻头,涡轮安装在传动轴上,扭力传导接头位于涡轮下方且其上下两端分别连接上接头和下接头,各对扭力发生装置均安装在扭力传导接头内部,每一扭力发生装置均包括冲击砧、连接轴和两冲锤,冲击砧的横截面为变厚度圆环形,且冲击砧的内表面设有第一冲击面,连接轴和两冲锤均位于冲击砧内部,两冲锤分别安装在连接轴的两端,连接轴垂直连接传动轴。本发明的有益效果:本发明可以持续地、同方向地生产扭转冲击振动,能够有效避免钻头黏滑现象的产生,提高钻头钻探效率。 【EN】The invention provides a torque impactor which comprises a transmission shaft, a turbine, a torque transmission joint and a plurality of pairs of torque generation devices, wherein the upper end of the transmission shaft is connected with an upper joint through an upper bearing seat, the lower end of the transmission shaft is connected with a lower joint through a lower bearing seat, the lower end of the lower joint is connected with a drill bit, the turbine is arranged on the transmission shaft, the torque transmission joint is positioned below the turbine, the upper end and the lower end of the torque transmission joint are respectively connected with the upper joint and the lower joint, each pair of torque generation devices are arranged inside the torque transmission joint, each torque generation device comprises an impact anvil, a connecting shaft and two impact hammers, the cross section of the impact anvil is in a variable-thickness annular shape, the inner surface of the impact anvil is provided with a first impact surface, the connecting shaft and the two. The invention has the beneficial effects that: the invention can continuously produce torsional impact vibration in the same direction, can effectively avoid the occurrence of drill bit stick-slip phenomenon, and improves the drilling efficiency of the drill bit.
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