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Rotary percussion drilling tool based on drill string vibration

A technology of percussion drilling and drill string, which is used in vibration drilling, drilling equipment, and liquid/gas jet drilling, etc., can solve the problem that it is difficult to improve the drilling efficiency of percussion drilling tools, so as to improve drilling efficiency and increase rotation. The effect of rock breaking and prolonging service life

Pending Publication Date: 2022-07-22
YANAN UNIV
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Problems solved by technology

[0005] In view of the above-mentioned problems in the prior art, the present application proposes a rotary percussion drilling tool based on drill string vibration, which solves the problem that the percussion drilling tool is difficult to improve its drilling efficiency due to its own structural limitations

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  • Rotary percussion drilling tool based on drill string vibration
  • Rotary percussion drilling tool based on drill string vibration

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Embodiment Construction

[0025] The present invention will be further described below with reference to the accompanying drawings.

[0026] It should be noted that in the present application, a drill bit is connected to the bottom of the drilling mechanism 20 . For rock breaking drilling at the bottom of the hole.

[0027] like figure 1 As shown, the present invention provides a rotary percussion drilling tool based on drill string vibration, which includes a pressure transmission mechanism 10 , a drilling mechanism 20 , and an elastic buffer 30 . The drilling mechanism 20 is partially arranged in the pressure transmission mechanism 10, the drilling mechanism 20 is connected with the pressure transmission mechanism 10, and can move in the pressure transmission mechanism 10; the elastic buffer member 30 is arranged on the pressure transmission mechanism 10 and the drilling mechanism The pressure transmission mechanism 10 is pressed down, and the elastic buffer member 30 transmits the pressure to the ...

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Abstract

The invention provides a rotary percussion drilling tool based on drill string vibration. The rotary percussion drilling tool comprises a pressure transmission mechanism; the drilling mechanism is partially arranged in the pressure transmission mechanism, and the drilling mechanism is connected with the pressure transmission mechanism and can move in the pressure transmission mechanism; the elastic buffer piece is arranged in the pressure transmission mechanism; when the pressure transmitting mechanism is pressed downwards, the elastic buffering piece transmits pressure to the drilling mechanism, meanwhile, the pressure transmitting mechanism can further drive the drilling mechanism to rotate, and the pressure transmitting mechanism is pressed downwards and lifted upwards in a reciprocating mode so that impact rotary drilling of the well bottom can be achieved. Based on the technical scheme of the invention, the pressure transmission mechanism can not only apply pressure to the drilling mechanism, but also drive the drilling mechanism to rotate. In this way, the impact rotary drilling rock breaking function of the rotary impact drilling tool is achieved. Compared with a percussion drilling tool in the related technology, the rotary rock breaking function is added, and therefore the drilling efficiency of the rotary percussion drilling tool is improved.

Description

technical field [0001] The invention relates to the technical field of oil drilling speed-up equipment, in particular to a rotary impact drilling tool based on drill string vibration. Background technique [0002] At present, percussive drilling is a drilling method in which the drilling rig is used to make the drill pipe and the drill line reciprocate up and down, so as to drive the drill bit at the lower end to impact and break the rock at the bottom of the well. Percussion drilling technology can form impact energy with a certain frequency on the drill bit, change the stress state of the bottom hole rock, and combine the characteristics of the hard rock layer with its poor resistance to impact load, forming shear rock breaking under the action of intermittent impact load. It can make the cracks on the rock surface continue to expand and reduce its mechanical strength, which is beneficial to improve the mechanical penetration rate of rock-breaking drilling and improve work...

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B4/16E21B7/18E21B7/24
CPCE21B4/16E21B7/18E21B7/24
Inventor 杨龑栋严都力刘军马文礼黄飞飞
Owner YANAN UNIV
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