Underground pneumatic drilling tool
A technology of drilling tools and drill pipes, which is applied to the driving device for drilling in the borehole, drilling equipment, earthwork drilling and production, etc., and can solve the problems of reducing heat production and prone to explosion
Active Publication Date: 2021-03-26
ORIENT ENERGY & TECH CO LTD
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Problems solved by technology
[0003] The current mining and drilling process usually generates a lot of heat. If the combustible gas and oxygen reach a certain mixing ratio at this time, it is very easy to explode; therefore, the problem of reducing heat production needs to be solved urgently
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[0024] In order to enable those skilled in the art to better understand the technical solution of the application, the application will be described in detail below in conjunction with the accompanying drawings. The description in this part is only exemplary and explanatory, and should not have any limiting effect on the protection scope of the application. .
[0025] Please refer to figure 1 and figure 2 , this embodiment provides a downhole pneumatic drilling tool, including a drill pipe 100, a reciprocating screw rod 110 that can rotate relatively is arranged inside the drill rod 100; A plurality of air pipes 130 and reciprocating pistons 120 are arranged between the rods 100; a plurality of air pipes 130 are evenly arranged around the reciprocating screw rod 110; The space is separated by the chuck 140; the chuck 140 is fixedly installed on the drill pipe 100, and is evenly arranged along the axial direction of the drill pipe 100; the reciprocating piston 120 and the co...
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The invention provides an underground pneumatic drilling tool. The underground pneumatic drilling tool comprises a drilling rod, wherein an air inlet assembly and an air outlet assembly are arranged at the two ends of the drill rod correspondingly, a reciprocating lead screw capable of rotating relatively is arranged in the drill rod, an air passage is arranged in the reciprocating screw rod, a reciprocating piston and an air pipe are arranged between the reciprocating screw rod and the drill rod, the reciprocating piston is sleeved on the reciprocating screw rod, and is provided with a corresponding through hole corresponding to the air pipe, and the air pipe and the air passage are provided with air holes at two ends of the reciprocating piston. According to the technical scheme, the reciprocating screw rod capable of relatively rotating and the reciprocating piston capable of moving in the axis direction are arranged in the drill rod, and the reciprocating piston can be controlled to do reciprocating motion so as to drive the reciprocating screw rod to rotate, and the air pipe and the air passage are provided with air holes at two ends of the reciprocating piston, so that reciprocating control on the reciprocating piston can be realized by switching air supply of the air pipe and the air passage.
Description
technical field [0001] The present application relates to the technical field of drilling and well drilling, in particular to a downhole pneumatic drilling tool. Background technique [0002] Coal gas bed refers to the hydrocarbon gas that exists in coal seams with methane as the main component, mainly adsorbed on the surface of coal matrix particles, and partially free in coal pores or dissolved in coal seam water. It is an associated mineral resource of coal and belongs to Unconventional natural gas is a clean, high-quality energy and chemical raw material that has risen internationally in recent years. [0003] The current mining and drilling process usually generates a large amount of heat. If the combustible gas and oxygen reach a certain mixing ratio at this time, an explosion will easily occur; therefore, the problem of reducing heat production needs to be solved urgently. Contents of the invention [0004] In view of the above-mentioned defects or deficiencies in ...
Claims
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Login to View More IPC IPC(8): E21B4/00E21B21/16
CPCE21B4/00E21B21/16
Inventor 魏秦文刘建华梁冠民尹永清尹永奇邓银江胡进王曦远王东伟肖鑫源张士明王圣林
Owner ORIENT ENERGY & TECH CO LTD