Impact-resistant screw drill tool

A screw drilling tool and anti-impact technology, which is applied in the direction of drilling tools, drill pipes, drill pipes, etc., can solve the problems of large impact damage of universal joints, affecting service life, reducing normal service life, etc., to eliminate drill jumping and impact Vibration, improve the overall service life, increase the effect of safety

Active Publication Date: 2013-03-27
潍坊盛德石油机械制造有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The impact damage suffered during work greatly affects the service life
[0004] Universal joints are also greatly damaged by impacts, which can easily cause damage to petals and steel balls, reducing the normal service life
Each connection button of the drilling tool is also prone to loosening and disconnection due to impact and vibration, resulting in a well-falling accident

Method used

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  • Impact-resistant screw drill tool
  • Impact-resistant screw drill tool
  • Impact-resistant screw drill tool

Examples

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Embodiment Construction

[0019] like figure 1 and figure 2 As shown, the impact-resistant screw drilling tool includes a screw drill housing 15, and a transmission shaft 1 is rotatably installed in the screw drill housing 15, and the lower end of the transmission shaft 1 protrudes from the screw drill housing 15. The lower end of the transmission shaft 1 is covered with a buffer sleeve 3 for installing a drill bit. The transmission shaft 1 and the buffer sleeve 3 are splined, and the middle part of the buffer sleeve 3 is provided with an internal spline 8. The transmission The shaft 1 is provided with an external spline 9 corresponding to the internal spline 8, and the transmission shaft 1 is provided with a buffer limit device that limits the axial movement range of the buffer sleeve 3; the transmission shaft 1 and the An axial elastic buffer device is provided between the buffer sleeves 3, and a sealing device is provided at the matching gap between the transmission shaft 1 and the buffer sleeve ...

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Abstract

The invention discloses an impact-resistant screw drill tool, comprising a screw drill outer shell, wherein the screw drill outer shell is internally and rotatably provided with a transmission shaft, the lower end of the transmission shaft stretches out of the screw drill outer shell, the lower end part of the transmission shaft is sheathed with a cushion collar provided with a drilling head, the transmission shaft and the cushion collar are in spline fit, the transmission shaft is provided with a cushion limiting device used for limiting the axial moving range of the cushion collar, an axial elastic cushioning device is arranged between the transmission shaft and the cushion collar, and the fit clearance of the transmission shaft and the cushion collar is provided with a sealing device. In the invention, the axial elastic cushioning device is arranged between the transmission shaft and the cushioning collar, which alleviates or eliminates bit jumping and impact shock generated when drilling is carried out at the bottom layer of bit jumping, reduces damages of the drill tool and the drilling head, protects the connection of a drill collar and the completeness of a well wall, prolongs the overall service life of the drill tool, and enhances the safety and the speed of well drilling.

Description

technical field [0001] The invention relates to the field of drilling equipment, in particular to a screw drilling tool. Background technique [0002] During drilling, the drilling tool and the drill bit are drilled under the condition of large drilling pressure and outputting a large torque through the drilling tool, especially the roller cone bit is drilled by continuously crushing the rock by the gear teeth. The moment the pressure shatters, there is a shock and shock. It tends to be particularly prominent in the gravel layer or the bottom layer with high hardness and poor stability, and even the phenomenon of drill jumping occurs. If there is drill jumping, it will produce a resonance effect, which can make drill pipes and drilling tools of thousands of meters jump together, which is extremely destructive to drill pipes, drilling tools and drill bits. Vibration will cause greater destructive force to the well wall, and collapse will occur quickly. The accumulation of ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B12/04E21B17/10
Inventor 贺波单连茂冯宝忠严光权孟霞
Owner 潍坊盛德石油机械制造有限公司
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