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Hydraulic cutting device and hydraulic cutting method for drilling through bed

A technology of hydraulic slotting and layer-penetrating drilling, which is applied in safety devices, earthwork drilling, drilling with liquid/gas jets, etc. It can solve the problems of small coal body exposure and affect the gas drainage effect, and achieve improved gas Drainage effect, simple structure, and the effect of increasing the exposed area

Pending Publication Date: 2017-09-26
HUAINAN MINING IND GRP
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  • Description
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  • Application Information

AI Technical Summary

Problems solved by technology

[0002] Mining areas with poor coal gas permeability need to drill through layers, and the exposed surface of the coal body in the layer-through holes constructed by ordinary drilling technology is small, which affects the gas drainage effect

Method used

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  • Hydraulic cutting device and hydraulic cutting method for drilling through bed
  • Hydraulic cutting device and hydraulic cutting method for drilling through bed

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Embodiment Construction

[0017] Such as Figure 1-2 As shown, the hydraulic cutting device for drilling through layers includes a water tank 1, a water inlet pipe 2, a water pump 3, an outlet pipe 4, a rotating water tail 5, a drilling rig 6, a drill pipe 7, a hydraulic cutting drill bit 8, a pressure gauge 9, and a pressure regulator Valve 10, pressure relief pipe 11, pressure relief valve 12, tee 13.

[0018] One end of the water inlet pipe 2 is connected to the water tank 1, and the other end is connected to the water inlet of the water pump 3; One end is connected to the hydraulic slotting drill bit 8; the drill pipe 7 is set on the drilling rig 6, which is driven to rotate by the drilling rig 6, and the rotating water tail 5 is used to connect the rotating drill pipe 7 and the stationary water outlet pipe 4 together; the water outlet pipe 4 is provided with The pressure gauge 9 is provided with a pressure regulating valve 10 on the water outlet pipe 4 between the pressure gauge 9 and the water o...

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Abstract

The invention discloses a hydraulic cutting device and a hydraulic cutting method for drilling through a bed. The hydraulic cutting device for drilling through the bed comprises a water tank, a water inlet pipe, a water pump, a water outlet pipe, a rotating water tail, a drilling machine, a drilling rod and a hydraulic cutting drill; one end of the water inlet pipe extends into the water tank, and the other end of the water inlet pipe is connected with a water inlet of the water pump; one end of the water outlet pipe is connected with a water outlet of the water pump, the other end of the water outlet pipe is connected with one end of the drilling rod through the rotating water tail, the other end of the drilling rod is connected with the hydraulic cutting drill, and the drilling rod is arranged on the drilling machine and is driven by the drilling machine to rotate; and a pressure gage is arranged on the water outlet pipe, and a pressure regulating valve is arranged on the water outlet pipe between the pressure gage and the water outlet of the water pump. The hydraulic cutting device for drilling through the bed has the advantages that a drilling coal section is reamed by using the cutting action of high pressure water jet, the area of a coal body exposed in the hole is increased, a fracture is manufactured, the gas permeability of the coal bed is improved, so that the gas extraction effect is improved.

Description

technical field [0001] The invention relates to the technical field of coal seam drilling, in particular to a hydraulic slotting device and a hydraulic slotting method for drilling through layers. Background technique [0002] Mining areas with poor coal gas permeability need to drill through layers, and the exposed surface of the coal body in the layer-through holes constructed by ordinary drilling technology is small, which affects the gas drainage effect. Contents of the invention [0003] The technical problem to be solved by the present invention is to provide a hydraulic slotting device and a hydraulic slotting method for drilling through layers that improve the gas drainage effect. [0004] The present invention solves the above-mentioned technical problems through the following technical solutions: a hydraulic slotting device for perforating layers, including a water tank (1), a water inlet pipe (2), a water pump (3), a water outlet pipe (4), and a rotating water t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/26E21B7/18E21F7/00
CPCE21B7/18E21B43/26E21F7/00
Inventor 李勇潘怀义陈磊余岩
Owner HUAINAN MINING IND GRP
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