Bidirectional borehole trimmer for well drilling

A dresser and wellbore technology, which is applied in the direction of wellbore/well components, earthwork drilling, etc., can solve the problems of low drilling efficiency, stuck pipe, and poor borehole quality, so as to save construction costs, avoid stuck pipe, The effect of improving construction efficiency

Pending Publication Date: 2021-07-23
河南易发石油工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

During the drilling process, due to the deformation of the formation and the wear of the drill bit, the hole size cannot reach the designed size, the quality of the hole is poor, and it is easy to cause sticking, and the efficiency of tripping and tripping is low.

Method used

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  • Bidirectional borehole trimmer for well drilling

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Embodiment

[0012] Such as figure 1 As shown, the present invention provides a two-way wellbore trimmer for drilling, which includes a body 1, a channel 2 is opened inside the body 1 along its axial direction, and an internal thread 3 for screwing with a drill pipe is provided at one end of the body 1 , the other end of the body 1 is provided with an external thread 4 for screwing with the drill pipe, the middle part of the body 1 is a working section 5, and the surface of the working section 5 is provided with a plurality of helical grooves 6 along the circumference, and the helical grooves The ribs 7 on both sides of the 6 are provided with cutting teeth 8, and the cutting teeth 8 are distributed at both ends of the outer surface of the ribs 7; the material of the cutting teeth 8 is a high wear-resistant alloy.

[0013] The number and arrangement of the cutting teeth 8 are not limited.

[0014] The specific working principle of the present invention: the present invention is applied to...

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PUM

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Abstract

The invention provides a bidirectional borehole trimmer for well drilling. The bidirectional borehole trimmer comprises a body, a channel is formed in the body in the axial direction of the body, one end of the body is provided with an internal thread used for being in threaded connection with a drill rod, the other end of the body is provided with an external thread used for being in threaded connection with the drill rod, the middle of the body is a working section, a plurality of spiral grooves are formed in the surface of the working section in the circumferential direction, cutting teeth are arranged on flanges on the two sides of each spiral groove, the cutting teeth are distributed at the two ends of the outer surface of each flange and are made of high-wear-resistance alloy, and the number and the arrangement mode of the cutting teeth are not limited. According to the bidirectional borehole trimmer for well drilling provided by the invention, the cutting teeth arranged on the convex edges of the working section of the bidirectional borehole trimmer can be used for efficiently trimming a borehole during tripping-in and tripping-out, so that the phenomenon of jamming of a drill is avoided, the construction efficiency is effectively improved, and the construction cost is saved.

Description

technical field [0001] The invention relates to the technical field of oil and gas drilling equipment, in particular to a two-way wellbore finisher for drilling. Background technique [0002] In the process of oil and gas exploitation, drilling rigs are used to drill wells of different diameters from the ground to reach the designated oil and gas layers, and casings of corresponding sizes are lowered and cemented to form oil and gas passages. During the drilling process, due to the deformation of the formation and the wear of the drill bit, the size of the wellbore cannot reach the designed size, the quality of the wellbore is poor, it is easy to cause sticking, and the efficiency of drilling and tripping is low. Contents of the invention [0003] The object of the present invention is to address the deficiencies of the prior art, to provide a two-way wellbore finisher for drilling, which is used to modify wellbore deformation, improve the quality of the wellbore, and impr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B29/00
CPCE21B29/00
Inventor 彭远庆王丹陈福民杨智明胡志强赵帅陈晓旭苏泽文
Owner 河南易发石油工程技术有限公司
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