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Rock debris cleaning device for drilling tool

A cleaning device and cuttings technology, which is applied in drilling tools, drilling equipment, earthwork drilling and production, etc., can solve the problems of low cleaning efficiency of boreholes, achieve efficient removal of cuttings, efficient removal, and prolong service life

Inactive Publication Date: 2012-09-26
NORTHEAST GASOLINEEUM UNIV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0011] The object of the present invention is to provide a cuttings cleaning device used on a drilling tool, which is used to solve the problem of low cleaning efficiency of the existing complex structure wellbore

Method used

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  • Rock debris cleaning device for drilling tool
  • Rock debris cleaning device for drilling tool
  • Rock debris cleaning device for drilling tool

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Embodiment Construction

[0039] The present invention will be further explained below in conjunction with the drawings:

[0040] Such as figure 1 As shown, the cuttings cleaning device used on this drilling tool is made by integral machining of thick-walled steel pipe blanks with non-equal diameters, and mainly includes an upper eye reaming protector 4, a rotary speed increaser 3, and a lower eye reaming protector 2. It is composed of the unmachined body part. Combine figure 2 As shown, the main body 7 is a thick-walled steel pipe, which penetrates inside and has the same inner diameter. The body 7 is used to process the rotary speed increaser 3, the lower reamer protector 2, and the upper eye reamer protector 4. The wall thickness of the part of the tube wall is larger than the other parts. The eye reaming protector 2 and the upper eye reaming protector 4 are suitable, and the tube wall thickness of the remaining part of the body 7 is relatively thin. One end of the body 7 is a male connector 1, and ...

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Abstract

The invention relates to a rock debris cleaning device for a drilling tool. The rock debris cleaning device for the drilling tool consists of a body, a rotating speed increaser and reaming protectors, wherein the body is a round steel pipe; an upper reaming protector, the rotating speed increaser and a lower reaming protector are arranged on an outer wall of the body; the rotating speed increaser is positioned between the upper reaming protector and the lower reaming protector; the rotating speed increaser consists of spiral blades and a debris discharging groove; the spiral blades are uniformly distributed by equal central angles; the upper reaming protector and the lower reaming protector consist of spiral protection blades which are uniformly distributed by equal central angles; a curved debris discharging groove is formed among the spiral protection blades; and a spiral angle of the rotating speed increaser, a spiral angle of the upper reaming protector and a spiral angle of the lower reaming protector are equal to one another. The rotating speed increaser can be protected by the reaming protectors, the wear of uneven walls of the well on the rotating speed increaser is reduced, even if the drilling tool is bent or buckled, the collision between the rotating speed increaser and the walls of the well also can be reduced, and the service life of the tool is prolonged.

Description

1. Technical Field: [0001] The invention relates to a wellbore cleaning tool in the process of oil and natural gas drilling, in particular to a cuttings cleaning device used on a drilling tool. 2. Background technology: [0002] During the drilling of oil and natural gas resources, the drill bit continuously breaks the rock to form a wellbore, and the cuttings (debris from the broken rock) are carried to the surface through the circulation of drilling fluid in the annulus (the annular space between the drill string and the wellbore). If cuttings can not be cleaned out of the well in time, cuttings accumulation will occur, that is, cuttings beds will be formed, especially in the process of drilling complex structure wells such as extended reach horizontal wells and multilateral wells. Experiments have shown that the cuttings bed is easy to form between the highly deviated well section and the horizontal well section (the inclination angle is about 45~90°). If the thickness of the...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B12/06E21B12/04
Inventor 闫铁孙晓峰邵帅孙庆仁吕长文栾石柱
Owner NORTHEAST GASOLINEEUM UNIV
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