Highly anti-torque drill rod

A drill pipe, high-resistance technology, applied in drill pipe, drill pipe, drilling equipment, etc., can solve the problems of drill pipe joint failure, drill pipe failure, low torsional strength of drill pipe, etc., to ensure safety and improve resistance. The effect of torsional strength

Inactive Publication Date: 2016-10-12
DP MASTER MFG
6 Cites 1 Cited by

AI-Extracted Technical Summary

Problems solved by technology

[0003] However, the torsional strength of ordinary drill pipe is not high. After long-term use, failure...
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Abstract

The invention relates to a highly anti-torque drill rod which is characterized by comprising a drill rod body (1), wherein an external thread (2) is arranged on the periphery of a pin small end of the drill rod body (1); an internal thread (3) is arranged on the inner wall of a box big end of the drill rod body (1); the external threads (2) and the internal threads (3) of two adjacent drill rods are meshed so as to connect the two drill rods; step surfaces are arranged at the upper and lower ends of the external thread (2) and the upper and lower ends of the internal thread (3) of the drill rod body (1); the steps at the lower end of the external thread (2) and the lower end of the internal thread (3) are main shoulders (4); and the steps at the upper end of the external thread (2) and the upper end of the internal thread (3) are auxiliary shoulders (5). The highly anti-torque drill rod provided by the invention can guarantee accurate realization of interference fit between the main shoulders and the thread section; the auxiliary shoulders also bear some load in a working state and realize certain overload protection effect; and moreover, the anti-torque intensity of the drill rod can be improved, and the safety of the drill rod is guaranteed.

Application Domain

Drilling rodsDrilling casings +1

Technology Topic

Drill pipeShoulder surface +2

Image

  • Highly anti-torque drill rod

Examples

  • Experimental program(1)

Example Embodiment

[0011] See figure 1 , The present invention relates to a high torsion resistance drill rod, including a drill rod body 1, the outer thread 2 is provided on the outer periphery of the small end of the male buckle of the drill rod body 1, and the inner wall of the large end of the female buckle of the drill rod body 1 is provided with internal threads 3. The external thread 2 of the two adjacent drill rods meshes with the internal thread 3, so that the two drill rods are connected, and the drill rod body 1 has stepped surfaces on the upper and lower ends of the external thread 2 and the upper and lower ends of the internal thread 3. The steps at the lower end of the external thread 2 and the lower end of the internal thread 3 are the main shoulder 4, and the steps at the upper end of the external thread 2 and the upper end of the internal thread 3 are the secondary shoulders 5.
[0012] The main shoulder 4 and the auxiliary shoulder 5 form a double shoulder structure, the main shoulder 4 and the threaded section produce a certain interference fit, and the auxiliary shoulder 5 has a certain auxiliary buckle positioning function, thereby ensuring The accurate realization of the interference fit between the main shoulder 4 and the threaded section. In addition, the auxiliary shoulder 5 will also bear part of the load in the working state to provide a certain overload protection, and it can also improve the torsional strength of the drill pipe to ensure Improve the safety of drill pipes.

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Description & Claims & Application Information

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