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A detachment prevention device for a torque rotary speed-increasing tool

An anti-dropping device and tool technology, applied in drilling equipment, earth-moving drilling, drill pipe and other directions, can solve the problems of tools falling into wells, disengagement of drill bit seat and tool housing, etc., achieving high reliability, easy assembly and disassembly, The effect of strong shear strength

Inactive Publication Date: 2017-10-03
CNPC SICHUAN GASOLINEEUM GEOPHYSICAL PROSPECTING ENG TECH RES INST
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0005] The purpose of the present invention is to overcome the deficiencies of the prior art and to solve the problem that the drill bit seat and the tool shell are disengaged from each other during the use of the torque rotary speed-up tool, resulting in the accident of the tool falling into the well

Method used

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  • A detachment prevention device for a torque rotary speed-increasing tool
  • A detachment prevention device for a torque rotary speed-increasing tool
  • A detachment prevention device for a torque rotary speed-increasing tool

Examples

Experimental program
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Effect test

Embodiment 1

[0020] This embodiment provides a figure 1 The shown anti-off device of the torque rotation speed-up tool includes a tool housing 1 and a drill seat 2 connected to the lower end of the tool housing 1. The tool housing 1 and the drill seat 2 are connected by a clearance fit. The tool The lower end of the housing 1 is provided with a tool housing groove ring 3, and the upper end of the drill bit seat 2 is provided with a drill bit seat groove ring 4, and an anti-lock ring 4 is provided between the tool housing groove ring 3 and the drill bit seat groove ring 4. Take off the clip spring 5;

[0021] The diameter of the groove ring 3 of the tool housing is greater than the diameter of the groove ring 4 of the drill seat, and the tool housing 1 is uniformly provided with a plurality of threaded holes 6 in the circumferential direction, and the threaded holes 6 communicate with the groove ring 3 of the tool housing ;

[0022] The outer diameter of described anti-off jumper 5 is equ...

Embodiment 2

[0029] On the basis of Embodiment 1, this embodiment provides an anti-off device of a torque rotary speed-increasing tool. The difference in length is 3-8mm; the anti-off jumper 5 can be fully squeezed into the drill bit seat groove ring 4, and it is convenient for loading and unloading.

[0030] In this embodiment, the tool housing 1 is evenly provided with 3-6 threaded holes 6 in the circumferential direction, and the threaded holes 6 are M 8 , M 10 or M 12 .

[0031] To sum up, the anti-falling device of the torque rotary speed-increasing tool provided by the present invention can prevent the torque rotary speed-increasing tool from slipping, causing the drill bit seat 2, internal parts of the tool, and the drill bit to fall into the bottom of the well, causing drilling accidents. Compared with the prior art, it has the following advantages: simple and compact structure, strong shear strength, high reliability, and easy assembly and disassembly.

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Abstract

The invention provides an anti-disengaging device of a torque rotational speed-up tool. The device comprises a tool shell and a drill bit base connected with the lower end of the tool shell. The tool shell and the drill bit base are connected in a clearance fit mode. The lower end of the tool shell is provided with a tool shell groove ring, the upper end of the drill bit base is provided with a drill bit base groove ring, and an anti-disengaging jump spring is arranged between the tool shell groove ring and the drill bit base groove ring. By means of the anti-disengaging device of the torque rotational speed-up tool, the torque rotational speed-up tool can be prevented from sliding off, and the situation that drilling accidents are caused because parts in the drill bit base and the tool and a drill bit fall into a well is prevented. Compared with the prior art, the anti-disengaging device has the advantages of being simple and compact in structure, high in shearing strength, high in reliability and easy and convenient to assemble and disassemble.

Description

technical field [0001] The invention specifically relates to an anti-off device of a torque rotary speed-increasing tool. Background technique [0002] When oil and gas are exploited, it is often necessary to use downhole power drilling tools to increase the drilling speed. As one of the downhole dynamic drilling tools, the torsion rotary speed-up tool converts fluid energy into circumferential impact energy. In addition to bearing the drill pressure and torque in the downhole, the bit seat has high-frequency vibration relative to the tool shell, and it is easier to disengage. Therefore, it is necessary to install a safe and reliable anti-off device in the connection between the drill seat and the tool housing. [0003] The pin-type anti-detachment device installed in traditional downhole tools has a through hole on the tool shell. The force that the pin can bear in this device is small, and the safety factor between the pin and the tool shell is low, and it is easy to caus...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B17/02
CPCE21B17/02
Inventor 梁宏伟李欣张毓民谭欢赵航博苏欢
Owner CNPC SICHUAN GASOLINEEUM GEOPHYSICAL PROSPECTING ENG TECH RES INST
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