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A front-end dynamic hydraulic large-diameter graded cavitation device and method for pressure relief and anti-reflection

A large-diameter, power-type technology, applied in earthwork drilling, wellbore/well components, directional drilling, etc., can solve problems such as equipment capacity, structural limitations, and limited maximum hole radius, and achieve fast and easy hole creation Control, operation simple effect

Active Publication Date: 2022-04-08
CCTEG SHENYANG RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current hydraulic punching hole creation technology is limited by the punching method, equipment capacity, and structure, and the maximum hole creation radius is limited, generally not exceeding 0.5m

Method used

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  • A front-end dynamic hydraulic large-diameter graded cavitation device and method for pressure relief and anti-reflection
  • A front-end dynamic hydraulic large-diameter graded cavitation device and method for pressure relief and anti-reflection
  • A front-end dynamic hydraulic large-diameter graded cavitation device and method for pressure relief and anti-reflection

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0029] Such as Figure 1-Figure 3 As shown, this embodiment proposes a front-end power type hydraulic large-diameter graded cavitation pressure relief device, including a drill pipe 33, a graded cavitation drill bit 2 and a high-pressure water supply system, wherein the graded cavitation drill bit 2 is installed on the drill rod 33 The high-pressure water supply system is connected to the tail end of the drill pipe 33 and supplies water to the inside of the drill pipe 33. The graded cavitation drill bit 2 includes a housing, which is equipped with a motor power supply device 4, a front-end explosion-proof motor 6, and a motor-driven bevel gear. 8. The first transmission bevel gear 16, the driving cylindrical gear 10 and the transmission chain 11. The graded cavitation drill bit 2 also includes at least one set of transmission cylindrical gears, water guide transmission shaft and jet assembly, wherein the motor power supply device 4 is arranged at the front end of the explosion-...

Embodiment 2

[0040] This embodiment takes the technical solution of Embodiment 1 as the technology, and takes two jet components as examples to describe the structure and usage method of the device in detail.

[0041] combine Figure 1-Figure 3 As shown, a front-end power type hydraulic large-diameter graded cavitation pressure relief and anti-reflection device mainly includes a high-pressure water injection pump 31, a high-pressure water tail 32, a drill pipe 33, a first clamper 34, a second clamper 35, The graded cavitation drill 2, wherein the graded cavitation drill 2 mainly includes the front explosion-proof motor 6, the motor protection shell 5, the axially retractable motor switch 3, the motor power supply device 4, the motor transmission bevel gear 8, and the first transmission bevel gear 16 , the first transmission shaft 9, the first transmission cylindrical gear, the transmission chain 11, the second transmission cylindrical gear 17, the second water guide transmission shaft 12, ...

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Abstract

The invention relates to the technical field of hydraulic large-diameter graded cavitation pressure relief and anti-reflection enhancement, and relates to a front-end power type hydraulic large-diameter graded cavitation pressure relief and anti-reflection enhancement device, wherein the motor power supply device is arranged at the tail of the front-end explosion-proof motor and electrically connected to the front-end explosion-proof motor. Sexual connection, the first transmission bevel gear is radially installed in the housing through the driving shaft, and the first transmission bevel gear meshes with the motor transmission bevel gear, the driving cylindrical gear and the first transmission bevel gear are installed on the same shaft, and the water guide transmission shaft The bearing is installed in the casing, and the transmission cylindrical gear is installed on the water guide transmission shaft. The tail of the jet assembly is installed in the middle of the water guide transmission shaft and the two are internally connected. The transmission chain is wound on the outside of the drive cylindrical gear and the transmission cylindrical gear. The device can realize multi-level three-dimensional punching and hole creation, expand the pressure relief range of drilling holes, and improve the effect of pressure relief, increase penetration and anti-burst. In addition, the present invention also proposes a front-end dynamic hydraulic large-diameter graded cavitation method for pressure relief and permeability enhancement.

Description

technical field [0001] The invention relates to the technical field of hydraulic large-diameter graded cavitation pressure relief and anti-reflection enhancement, in particular to a front-end dynamic hydraulic large-diameter graded cavitation pressure relief device and method. Background technique [0002] Coal mine gas (coalbed methane) is one of the important unconventional natural gas resources. When the coalbed methane extraction from high gassy coal seams is carried out underground in coal mines, whether or not the coalbed methane extraction from unloaded coal seams can achieve better results mainly depends on the coal seam permeability. However, the coal seams in most of my country's mining areas are high-gas and low-permeability coal seams. The coal quality is soft and the permeability is poor, and the permeability is only 10- 4 —10- 3 mD, since the permeability of the coal seam directly determines the efficiency of CMM (coalbed methane) extraction and utilization, ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/00E21B43/26E21B7/18E21B7/04
CPCE21B43/006E21B7/18E21B43/26E21B7/04
Inventor 仇海生曹垚林徐成王宇鹍孙娜郭怀广赵洪瑞张开加董全
Owner CCTEG SHENYANG RES INST
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