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Monolithic drill pipe and drill pipe composed of it

A drill pipe and monomer technology, applied in drill pipe, drill pipe, drilling equipment and other directions, can solve the problems of inability to work, affect the powder extraction efficiency, collapse and other problems, and achieve the effect of increasing economic benefits and controlling the accident rate of coal mines.

Active Publication Date: 2015-09-09
崔超
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] At present, many coal mines use screw drilling tools with curved front ends in the process of directional drilling operations. This kind of drilling tools can only perform bending operations and cannot perform straight-line drilling. In the process of bending operations, the more corners The greater the resistance, it will affect the powder output efficiency; and when encountering a fault, it is more likely to cause a collapse; it cannot work in areas with high gas concentration in medium-soft coal seams
[0005] A VLD1000-05 series directional drilling rig produced in Australia can realize directional drilling operations, but the above problems are still insurmountable, and its purchase, use and maintenance costs are relatively high

Method used

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  • Monolithic drill pipe and drill pipe composed of it
  • Monolithic drill pipe and drill pipe composed of it
  • Monolithic drill pipe and drill pipe composed of it

Examples

Experimental program
Comparison scheme
Effect test

Embodiment 1

[0039] Such as figure 1 , 2 As shown, a single drill rod includes a rod body 1 and joints at both ends of the rod body. Two axial through holes are arranged in the rod body, one of which is an eccentric through hole 2 . The eccentric through hole is used as a hydraulic oil chamber or a wire rope channel to bend the drill pipe to achieve the purpose of bending drilling operations, and the other axial through holes can be used for other purposes. This monolithic drill pipe is the basis for other monolithic drill pipes. And it can be used as a single drill pipe of the drill pipe of the advancing section or as a single piece of drill pipe forming the hydraulic cavity of the drill pipe of the bending section.

Embodiment 2

[0041] A single-body drill rod, the rod body is a solid rod body, and at least two axial through holes are arranged in the solid rod body, at least one of which is an eccentric through hole. This monolithic drilling rod is a solid monolithic drilling rod, and has the same effect as that of Embodiment 1.

[0042] Other structures are with embodiment 1.

Embodiment 3

[0044] A single-body drill pipe, the rod body is a hollow rod body, and the hollow rod body is provided with a hollow tube with at least two hollow rod bodies through a support plate. The inner hole of the hollow tube is an axial through hole, and at least one of the axial through holes is eccentric through hole. This monolithic drill pipe is a hollow monolithic drill pipe with a lighter weight, and has the same effect as in Embodiment 1.

[0045] Other structures are with embodiment 1.

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Abstract

The invention provides a single-body drilling rod, comprising a rod body and connectors at two ends of the rod body, wherein the rod body is internally provided with at least one axial through hole; and the axial through hole is an eccentric through hole. According to the single-body drilling rod, the toughness of a steel drilling rod is utilized and the drilling rod is bent in a working process by the power of a hydraulic cylinder through a steel wire rope or hydraulic oil, so that the bent drilling and the straight-line drilling can be realized at the same time.

Description

technical field [0001] The utility model belongs to the field of coal mining, in particular to a single drill rod and a drill rod composed of the same which can flexibly bend during the mining process. Background technique [0002] Coal seams are generally layered, layered, or bifurcated, compounded, and pinched out along the strike and dip, and some are in the shape of lenticular, watercress, chicken coop, and beaded. The change of coal seam shape and thickness is caused by various geological factors, and is closely related to the geological background during and after the coal accumulation period. Some belong to the early stage of peat accumulation, such as the uneven bottom of the swamp, the uneven subsidence of the swamp, the changes in the shape and thickness of the coal seam caused by the erosion of the peat layer by river water or sea water, etc., which are called the original change of the coal seam; some belong to after the peat layer is covered. , such as changes ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B17/00
Inventor 崔超
Owner 崔超
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