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Thread structure of drilling rod

A drill pipe and thread technology, applied in the direction of drill pipe, drill pipe, drilling equipment, etc., can solve the problems of unsmooth tightening of male and female threads, large resistance of drill pipe, inconvenient operation, etc. Good for construction and smooth guidance

Inactive Publication Date: 2016-08-31
WUXI DOUBLE HORSE DRILLING TOOLS
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] 1) The male and female threads are not tightened smoothly, the screwing speed is slow, and it is not easy to operate;
[0005] 2) During construction, the resistance of the drill pipe is relatively large

Method used

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  • Thread structure of drilling rod
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Experimental program
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Embodiment Construction

[0020] The technical solutions of the present invention will be further described below in conjunction with the accompanying drawings and through specific implementation methods.

[0021] see figure 2 as shown, figure 2 It is a schematic diagram of the drill pipe thread structure provided by Embodiment 1 of the present invention.

[0022] In this embodiment, a drill pipe thread structure includes a drill pipe body 1 and a threaded section 2 provided at the end of the drill pipe body 1, wherein the thread profile angle of the threaded section 2 is defined by angle A and angle B. composition, the A angle is greater than the B angle, and the A angle is located at the front end of the B angle along the screwing direction of the thread segment 2, and the A angle is 45°, and the B angle is 30°, which increases the The angle of the front thread improves its guiding performance and makes the guiding of the male and female threads more smooth when tightening. The thread pitch of t...

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PUM

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Abstract

The invention discloses a thread structure of a drilling rod. The thread structure comprises a drilling rod body and a threaded section, wherein the threaded section is arranged at the end part of the drilling rod body; a thread form angle of the threaded section consists of an angle A and an angle B; the angle A is greater than the angle B; the angle A is at the front end of the angle B in the screwing direction of the threaded section; the thread screw pitch of the threaded section is 7.257mm. By adopting the thread structure of the drilling rod, the angle of threads at the front end is increased, the guiding property is improved, and male and female threads can be relatively smoothly guided when being screwed. The operation is convenient, the screwing and buckling speed of the drilling rod is increased, the resistant force of the drilling rod is reduced in construction, and construction can be facilitated.

Description

technical field [0001] The invention relates to a drill rod, in particular to a drill rod thread structure. Background technique [0002] The drill pipe is a steel pipe with a threaded tail, which is used to connect the surface equipment of the drilling rig and the drilling and grinding equipment or the bottom hole device at the bottom of the drilling well. The purpose of the drill pipe is to transport the drilling mud to the drill bit and together with the drill bit to raise, lower or rotate the bottom hole device. Drill pipe must be able to withstand enormous internal and external pressure, twisting, bending and vibration. In the process of oil and gas extraction and refining, the drill pipe can be used many times. [0003] Therefore, the thread structure is an important part of the drill pipe, see figure 1 as shown, figure 1 It is a schematic diagram of a traditional drill pipe thread structure. The thread angle of the existing drill pipe thread structure is composed ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/042
CPCE21B17/042
Inventor 鲍洪锋周洪羊
Owner WUXI DOUBLE HORSE DRILLING TOOLS
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