Looking for breakthrough ideas for innovation challenges? Try Patsnap Eureka!

Straight hole drilling method for drilling machine

A drilling rig, straight hole technology, applied in drilling equipment and methods, drill pipes, drill pipes, etc., can solve the problems of uneven force on the drill bit, and it is difficult for the drill to reach the designated position.

Inactive Publication Date: 2017-04-26
CHINA UNIV OF MINING & TECH
View PDF8 Cites 5 Cited by
  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

At present, the main method of drilling is single-type drill pipe drilling. The drill pipe is mainly round. In this method, there is a certain gap between the drill pipe and the hole wall. When the drilling distance is long, due to the uneven force on the drill bit , the drill pipe begins to bend and deviate from the direction of the drilling axis, and it is difficult for the drill hole to reach the designated position

Method used

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
View more

Image

Smart Image Click on the blue labels to locate them in the text.
Viewing Examples
Smart Image
  • Straight hole drilling method for drilling machine

Examples

Experimental program
Comparison scheme
Effect test

Embodiment Construction

[0014] An embodiment of the present invention will be further described below in conjunction with accompanying drawing:

[0015] Such as figure 1 As shown, the drilling rig of the present invention drills a straight hole drilling method, utilizes drill bit 6 and drill rod 2 to drill, and described drill rod 2 comprises circular drill rod 5 and threaded drill rod 3, threaded drill rod 3 and common circular Drill rod 2 is identical with drill rod 5 internal diameters, is provided with the connecting piece that connects thread by internal thread or two ends is connected and fastened, and threaded drill rod 3 external diameters are identical with drill bit 6, and both external diameters are larger than circular drill rod 5.

[0016] The threaded drill rod 3 is composed of a hollow cylinder and an external thread, and is made of high-strength steel with high bending strength, which can effectively prevent the drill bit from bending when the force is uneven. The thread on the threa...

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

PUM

No PUM Login to View More

Abstract

The invention provides a straight hole drilling method for a drilling machine, and the straight hole drilling method for the drilling machine is suitable for drilling a gas drainage borehole in an underground coal mine. A drill bit is arranged on a section of round drill rod to start hole drilling operation, after a borehole is drilled by the depth of one section of drill rod, a section of threaded drill rod of which the outer diameter is the same as that of the drill bit is connected with the drill bit, drilling continues to be conducted, a common round drill rod is connected after the threaded drill rod enters the borehole, and drilling is conducted according to a general method till the drill bit reaches the designated position. The straight hole drilling method has the advantages that the drilling trace is straight, operation is simple, and slagging is effective; the problem that the borehole deviates the preset trace due to the fact that the drill bit is unevenly stressed can be effectively solved; and meanwhile, the threaded drill rod is convenient to buy, the cost is low, and the drilling cost is low.

Description

technical field [0001] The invention relates to a method for drilling straight holes with a drilling rig, and is especially suitable for long-distance drilling in areas with uneven hardness and softness of surrounding rocks. Background technique [0002] Drainage is the fundamental way to solve the problem of coal mine gas. The position of the drainage borehole has a great influence on the efficiency of gas extraction. The drainage effect of the coal mine gas drainage borehole in my country is very poor, which reflects the actual position of the borehole and the design position. The problem of large deviations. At present, the main method of drilling is single-type drill pipe drilling. The drill pipe is mainly round. In this method, there is a certain gap between the drill pipe and the hole wall. When the drilling distance is long, due to the uneven force on the drill bit , the drill pipe begins to bend and deviate from the direction of the drilling axis, and it is difficult...

Claims

the structure of the environmentally friendly knitted fabric provided by the present invention; figure 2 Flow chart of the yarn wrapping machine for environmentally friendly knitted fabrics and storage devices; image 3 Is the parameter map of the yarn covering machine
Login to View More

Application Information

Patent Timeline
no application Login to View More
Patent Type & Authority Applications(China)
IPC IPC(8): E21B7/00E21B17/00E21B17/042
CPCE21B7/00E21B17/00E21B17/042
Inventor 林柏泉杨威胡欣然
Owner CHINA UNIV OF MINING & TECH
Who we serve
  • R&D Engineer
  • R&D Manager
  • IP Professional
Why Patsnap Eureka
  • Industry Leading Data Capabilities
  • Powerful AI technology
  • Patent DNA Extraction
Social media
Patsnap Eureka Blog
Learn More
PatSnap group products

Browse by: Latest US Patents, China's latest patents, Technical Efficacy Thesaurus, Application Domain, Technology Topic, Popular Technical Reports.

© 2024 PatSnap. All rights reserved.Legal|Privacy policy|Modern Slavery Act Transparency Statement|Sitemap|About US| Contact US: help@patsnap.com