Coal Seam Hydraulic Reaming Drilling Tool and Reaming Technology

A hydraulic reaming and drilling tool technology, which is applied in directional drilling, earthwork drilling, drilling equipment, etc., can solve the problems of reporting, lack of coal seam hydraulic reaming drilling tools and reaming technology, and achieve improved gas drainage effect, Simple and applicable effect

Active Publication Date: 2022-02-08
CCTEG SHENYANG RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, there is no corresponding report on coal seam hydraulic reaming drilling tools and reaming technology.

Method used

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  • Coal Seam Hydraulic Reaming Drilling Tool and Reaming Technology
  • Coal Seam Hydraulic Reaming Drilling Tool and Reaming Technology
  • Coal Seam Hydraulic Reaming Drilling Tool and Reaming Technology

Examples

Experimental program
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Effect test

no. 1 example

[0027] see Figure 1-Figure 5 , a coal seam hydraulic reaming drilling tool, including a drilling tool and a drill pipe joint 100, characterized in that: in the drilling tool shell 71, there is a hydraulic pump 80 with a hydraulic pump connection end 82 and a rack 90, and the rack 90 and the hollow drive The driving gear 20 on the gear bearing 21 is connected by transmission. After the hollow driving gear bearing 21 passes through the upper shaft hole of the thick steel frame 1, the outside of the drilling tool is fixed by the nozzle fixing bracket 22 on the hollow driving gear bearing. The inside of the drilling tool is driven by a hollow The gear bearing positioning part 210 is fixed on the thick steel frame 1 in a limited position, the upper shaft hole of the thick steel frame 1 is connected with the sliding bearing of the hollow drive gear bearing 21, and the connecting end 82 of the hydraulic pump is connected with the connecting end 211 of the hollow driving gear bearing ...

no. 2 example

[0030] see Figure 1-Figure 5, a coal seam hydraulic reaming drilling tool, including a drilling tool and a drill pipe joint 100, characterized in that: in the drilling tool shell 71, there is a hydraulic pump 80 with a hydraulic pump connection end 82 and a rack 90, and the rack 90 and the hollow drive The driving gear 20 on the gear bearing 21 is connected by transmission. After the hollow driving gear bearing 21 passes through the upper shaft hole of the thick steel frame 1, the outside of the drilling tool is fixed by the nozzle fixing bracket 22 on the hollow driving gear bearing. The inside of the drilling tool is driven by a hollow The gear bearing positioning part 210 is fixed on the thick steel frame 1 in a limited position, the upper shaft hole of the thick steel frame 1 is connected with the sliding bearing of the hollow drive gear bearing 21, and the connecting end 82 of the hydraulic pump is connected with the connecting end 211 of the hollow driving gear bearing w...

no. 3 example

[0036] see Figure 1-Figure 8 , a coal seam hydraulic reaming drilling tool reaming process, including drilling a drill hole 306 in the coal seam, using a high pressure water pump 308 to connect the drilling rig 307 with a conventional hydraulic reaming drilling tool 300 with a conventional nozzle 303 at the front end of the drilling machine 307 , use conventional hydraulic reaming drilling tool 300 water jet 302 conventional reaming 301 (general reaming radius 0.3 meters), pull out drill pipe 304, unload conventional hydraulic reaming drilling tool 300, the feature is: the drill pipe 304 passes through The drilling tool and the drill pipe joint 100 are connected to the coal seam hydraulic reaming drilling tool 400, and the nozzle rod 99 driven by the driving gear of the selected length is fixed on the nozzle fixing bracket 22 on the hollow driving gear bearing. The drill pipe 304 of the drilling tool 400 is inserted into the bottom of the hole, injecting high-pressure water, ...

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Abstract

The invention relates to a coal seam hydraulic reaming drilling tool, which includes a drilling tool and a drill pipe joint, a hydraulic pump with a hydraulic pump connection end and a rack in the casing of the drilling tool, and the driving gear transmission on the rack and the hollow driving gear bearing. Link, after the hollow driving gear bearing passes through the upper shaft hole of the thick steel frame, the outside of the drilling tool is fixed by the nozzle fixing bracket on the hollow driving gear bearing, and the inside of the drilling tool is fixed on the thick steel frame by the hollow driving gear bearing positioning piece , the shaft hole on the thick steel frame is connected with the sliding bearing of the hollow driving gear bearing, the connecting end of the hydraulic pump is connected with the connecting end of the hollow driving gear bearing with a high-pressure water pipe, the nozzle fixing bracket on the hollow driving gear bearing has a fixing hole for the nozzle rod, and the hydraulic pump There is a spring to pull the rack inside, and a rack limiter is set inside the drilling tool shell to limit the forward position of the rack. The hole reaming process is also disclosed. When the spring fails, the drill rod is pulled out to realize successive hole reaming with different radii, increasing the pressure relief area and drainage range of the drilling gas.

Description

technical field [0001] The invention relates to a coal seam hydraulic reaming tool and a reaming process or method, in particular to a coal seam hydraulic reaming drilling tool and a reaming process. Background technique [0002] Due to the influence of submerged jets, hydraulic slotting and hydraulic cavitation in underground coal mines have a relatively small effective range and a small radius, resulting in a relatively small range of pressure relief, and the gas drainage effect is not ideal. The solution is to increase the radius of the hydraulic reaming drilling tool and the method of fractional jet cutting, which can effectively improve and expand the effective range and cutting range of the water jet, increase the radius of hydraulic cutting and hydraulic hole creation, and increase the unloading capacity of the coal seam. The pressure range can improve the gas drainage effect of the coal seam. But there is no corresponding coal seam hydraulic reaming drilling tool an...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B7/04E21B7/18E21B7/28E21B10/61E21B43/00
CPCE21B43/006E21B7/18E21B7/04E21B7/28E21B10/61
Inventor 王宇鹍仇海生曹垚林都锋孙文静韩晓极梁博刘晓辉徐成贾艳武
Owner CCTEG SHENYANG RES INST
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