Cyclone type jetting drill bit

A cyclone, drill bit technology, applied in drill bits, drilling equipment, earth-moving drilling, etc., can solve the problems of hindering the production efficiency of coal seam mining, restricting the development of productivity, and unable to sample at a fixed point, so as to improve the efficiency and safety of sampling, reduce Gas disaster accident, effect of saving sampling time

Active Publication Date: 2013-05-01
CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
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  • Application Information

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Problems solved by technology

The main reason lies in the drill bit. The use of this common drill bit has slow sampling speed and shallow sampling depth, which causes the problems of long sampling time and inability to sample at fixed points in the actual sampling work, which seriously hinders the production efficiency of coal seam mining and restricts the development of productivity;

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  • Cyclone type jetting drill bit
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Embodiment Construction

[0019] The preferred embodiments of the present invention will be described in detail below with reference to the accompanying drawings.

[0020] Such as figure 1 Shown is the cross-sectional view of the cyclone jet drill bit of the present invention, the cyclone jet drill bit of the present invention comprises a drill bit body 1 provided with a cavity, and a sampling port 5 communicating with the cavity is arranged in the middle of the end of the drill bit body 1, so The end of the drill bit body 1 is provided with a cutting bit 2 for drilling and sampling, and the wall of the drill bit body 1 near the cutting bit 2 is provided with a swirl jet hole 4 communicating with the cavity, and the swirl jet The centerline of the hole 4 and the axis of the drill body 1 intersect each other in space. The cyclone jet drill bit in this embodiment is used by cooperating with equipment such as double-wall drill pipes and drilling rigs.

[0021] During normal drilling, the drilling rig dr...

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Abstract

The invention discloses a cyclone type jetting drill bit. The drill bit comprises a drill bit body with a hollow cavity, wherein the middle of the end part of the drill bit body is provided with a sampling port communicated with the hollow cavity, the end part of the drill bit body is provided with a cutting tool bit used for drilling and sampling, the position on the wall of the drill bit body, which is close to the cutting tool bit, is provided with an eddy-flow jetting hole communicated with the hollow cavity, and the central line of the eddy-flow jetting hole and the axis of the drill bit body are mutually staggered in the space. According to the cyclone type jetting drill bit disclosed by the invention, coal dust is pressed into a sampling passage by jetting out rotary compressed air so as to achieve the aim of quickly and accurately carrying out the operation of sampling; and moreover, the sampling time can be saved, the sampling time is reduced to about 2 to 5 minutes, the increase of the sampling depth reaches more than 100 meters, the working efficiency and the safety of the sampling of a coal mine are enhanced, and the disaster accident of gas is lowered.

Description

technical field [0001] The invention belongs to the field of drill bits, in particular to a cyclone jet drill bit. Background technique [0002] At present, the management of coal mine gas disasters is mainly based on regional prevention and control, supplemented by local measures. The rapid measurement technology of regional gas parameters has become an urgent problem to be solved. Therefore, deep hole sampling is the primary problem to be solved; the existing deep gas sampling methods mainly include: Core tube sampling, auger drilling into the orifice to receive pulverized coal, compressed air injection sampling, etc. The sampling time of these sampling methods is generally about 30 minutes during the sampling process, and the sampling depth is about 30 meters. The main reason lies in the drill bit. The use of this common drill bit has slow sampling speed and shallow sampling depth, which causes the problems of long sampling time and inability to sample at fixed points in ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/00
Inventor 胡千庭文光才隆清明王艺树康建宁邹银辉韩承强李秋林李建功雷红艳吕贵春刘胜牟景珊
Owner CHINA COAL TECH & ENG GRP CHONGQING RES INST CO LTD
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