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Centralizing and cutting integrated two-stage cone reamer

A reamer, an integrated technology, applied in the direction of drilling equipment, earthwork drilling, drill bits, etc., can solve the problems of easy shaft breakage, low reaming efficiency, heavy reaming drilling tool weight, etc.

Pending Publication Date: 2021-08-20
天津博为中天钻具有限公司
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  • Abstract
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  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, in the actual use of the reamer in the prior art, the installation of the centralizer increases the weight of the reaming drilling tool, which is prone to shaft breakage, and the centralizer is usually equipped with a first-stage cone set, so the reaming efficiency is low

Method used

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  • Centralizing and cutting integrated two-stage cone reamer
  • Centralizing and cutting integrated two-stage cone reamer

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Embodiment Construction

[0020] In order to enable those skilled in the art to better understand the technical solutions of the present invention, the present invention will be further described in detail below in conjunction with the accompanying drawings.

[0021] see Figure 1-2 , the embodiment of the present invention provides a technical solution: an integrated two-stage cone reamer, including a reamer body 2, a mandrel 1 is arranged at the axis of the reamer body 2, and the mandrel 1 It is a hollow structure, and one end of the mandrel 1 is a female button, and the other end is a male button. The outer side of the mandrel 1 is covered with a straight cylinder, and between the straight cylinder and the mandrel 1, there are square rigids arranged in a staggered front and rear. The reamer body 2 It is provided with a first-stage centralizing cone set 4 and a second-stage cutting cone set 5, the first-stage centralizing cone set 4 is used for centering, and the second-stage cutting cone set 5 is us...

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Abstract

The invention discloses a centralizing and cutting integrated two-stage cone reamer, and relates to the technical field of horizontal directional drilling construction rock reaming. The centralizing and cutting integrated two-stage cone reamer comprises a reamer body; a mandrel is arranged at the axis of the reamer body; a first-stage centralizing cone set and a second-stage cutting cone set are arranged on the reamer body; the first-stage centralizing cone set is used for centralizing; the second-stage cutting cone set is used for cutting; and each of the first-stage centralizing cone set and the second-stage cutting cone set consists of a plurality of cones. Through the arrangement of the first-stage centralizing cone set and the second-stage cutting cone set, reaming cutting can be achieved, the reamer can be centralized, effective combination of the reamer and a centralizer is achieved, the weight of a reaming drilling tool is reduced, the drilling torque is reduced, and the footage drilling efficiency is improved; and according to the design, the centralizing cones has a cutting capacity and can smoothly enter guiding holes in a stratum with both a soft part and a hard part, and the design has the advantages of light weight, compact structure and high reaming efficiency.

Description

technical field [0001] The invention relates to the technical field of rock reaming in horizontal directional drilling construction, in particular to a two-stage cone reamer with support and cutting integrated. Background technique [0002] Hole reaming is one of the key technical links of directional drilling traversing technology, which is to expand the diameter of the pilot hole to 1.2 to 1.5 times the diameter of the pipeline to be laid. A hole reamer is a drilling tool that expands the diameter of the hole and repairs the hole wall. During the reaming process of the horizontal directional drilling machine, the centralizer is often connected to the front or rear end of the reamer. [0003] Existing patents such as Chinese patent publication number are: CN203129960U, the name of this patent is " a kind of reamer for non-excavation construction ", and this patent comprises reamer body, cone and cone seat, and described cone The wheel seat and the reamer body are connecte...

Claims

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Application Information

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IPC IPC(8): E21B10/08E21B10/26E21B10/30
CPCE21B10/08E21B10/26E21B10/30
Inventor 佟功喜
Owner 天津博为中天钻具有限公司
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