Screw rod type circumferential direction percussion drilling tool

A technology of percussion drilling and screw type, which is applied in the direction of drilling equipment, earthwork drilling, rotary combined drilling, etc. It can solve the problems of drilling tool failure, such as mechanical speed of penetration, so as to improve the mechanical speed of penetration and rock breaking efficiency , Stable and reliable working performance

Pending Publication Date: 2018-11-13
SOUTHWEST PETROLEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to simplify the structure of the torsion impactor and provide a screw type circumferential percussion drilling in order to solve the problems of drill bit stic

Method used

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  • Screw rod type circumferential direction percussion drilling tool
  • Screw rod type circumferential direction percussion drilling tool
  • Screw rod type circumferential direction percussion drilling tool

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Embodiment Construction

[0020] Below in conjunction with accompanying drawing and embodiment, the present invention will be further described:

[0021]Referring to the accompanying drawings, the screw type circumferential impact drilling tool is characterized in that: the screw type circumferential impact drilling tool is composed of a power assembly, a cardan shaft assembly, a transmission assembly and an impact assembly; the power assembly The lower end is connected with cardan shaft assembly, transmission assembly and impact assembly in turn; the power assembly includes upper joint 1, anti-drop lock nut 2, anti-drop connecting rod 3, stator housing 4, rubber bushing 5 and screw 6. The rubber bushing 5 is installed inside the stator housing 4, the screw rod 6 and the rubber bushing 5 mesh with each other, and the screw rod 6 is driven to rotate under the driving of the drilling fluid; the upper part of the upper joint 1 is connected with the drill pipe, and the lower part is threaded Connected with...

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Abstract

The invention provides a screw rod type circumferential direction percussion drilling tool. The stick-slip vibration phenomenon generated by a drill bit in the process of drilling is reduced. According to the technical scheme, the screw rod type circumferential direction percussion drilling tool is composed of a power assembly, a cardan shaft assembly, a drive assembly and an impact assembly, theupper portion of the power assembly is connected with a drilling rod, the lower portion of the power assembly is connected with the cardan shaft assembly, the drive assembly and the impact assembly insequence, and the lower portion of the power assembly is connected with the drill bit. When working, drilling fluid enters from the upper joint to a drive screw rod to rotate, contiguous screw rod transmission shafts and gear driving shafts are driven to rotate in sequence, and thus gears are driven to rotate. Through gear meshing, a percussion hammer is driven to rotate by a driven gear to crashand impact a shell body to generate an impact effect, and torsional vibration generated by the collision is transferred to the lower joint, finally is transferred to the drill bit to break up rocks.The screw rod type circumferential direction percussion drilling tool can generates torsional impact vibration continuously, the rock breaking efficiency of the drill bit is improved, the phenomenonsof sticking of tool and stick slipping generated are effectively reduced or even avoided, torque is balanced, the drill bit is protected, the service life of the drill bit is prolonged, and the drilling speed is increased.

Description

technical field [0001] The invention relates to a screw type circumferential percussion drilling tool used in the fields of petroleum and natural gas shale gas drilling, mining, geological drilling and the like. Background technique [0002] In recent years, with the country's increasing demand for oil and natural gas, the exploitation of shale gas is also a hot spot and a challenge. Because during the drilling process, due to the driller’s technical and experience problems, the driller’s technical and experience problems often cause the drill to be sent too late or too fast, or because of the friction of the well wall, the drilling pressure applied to the drill bit is unstable, which affects the rock breaking efficiency. It is even possible to damage the drill bit, crack the cutting teeth of the drill bit, etc. due to the sudden increase of the drilling pressure, which will affect the drilling speed. On the other hand, when the PDC drill bit is drilling hard or abrasive fo...

Claims

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Application Information

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IPC IPC(8): E21B6/00
CPCE21B6/00Y02E10/20
Inventor 田家林熊洁张堂佳杨琳林晓月杨毅
Owner SOUTHWEST PETROLEUM UNIV
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