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Drilling bit capable of being abandoned under stuck and buried conditions

A drill bit and hand-throwing technology, which is applied to drill bits, drill pipes, drill pipes, etc., can solve the problems of stuck and buried pipe strings in the horizontal section, and cannot take out the buried pipe strings, so as to improve the success rate of salvage and avoid excessive economic losses. Effect

Pending Publication Date: 2019-01-08
成都希能能源科技有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

However, due to the complexity of the downhole situation and various possible reasons, there are still many cases where the pipe string in the horizontal section is stuck and cannot be taken out.
At present, various means and methods such as shocking are used to recover the stuck buried pipe string at home and abroad, but there are still some cases in which the buried pipe string cannot be removed in the project

Method used

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  • Drilling bit capable of being abandoned under stuck and buried conditions
  • Drilling bit capable of being abandoned under stuck and buried conditions
  • Drilling bit capable of being abandoned under stuck and buried conditions

Examples

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Embodiment Construction

[0025] The principles and features of the present invention are described below in conjunction with the accompanying drawings, and the examples given are only used to explain the present invention, and are not intended to limit the scope of the present invention.

[0026] Such as Figure 1-5 As shown, a drill bit that can be buried in case of jamming includes a vertically arranged drill body 2 and an outer cylinder 1, the outer cylinder 1 is sleeved on the drill body 2, and the top of the drill body 2 and the top of the outer cylinder 1 A lock nut 3 is provided, a plurality of torsion transmission grooves 13 are provided on the bottom surface of the outer cylinder 1, and a plurality of torsion transmission blocks 10 are provided in the middle of the drill body 2, and the torsion transmission blocks 10 are matched with the torsion transmission grooves 13 one by one. To connect, the top of the drill body 2 is provided with an external thread A11, and the lock nut 3 is screwed to...

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Abstract

The invention discloses a drilling bit capable of being abandoned under stuck and buried conditions. The drilling bit comprises a vertically arranged drilling bit body and an outer cylinder. The outercylinder sleeves the drilling bit body. A locking nut cap is arranged between the top of the drilling bit body and the outer cylinder. A plurality of transmission torque slots are formed in the bottom of the outer cylinder; a plurality of transmission torque blocks are arranged at the middle part of the drilling bit body; and the transmission torque blocks and the transmission torque slots are connected cooperatively in a one-to-one correspondence manner. An external thread A is arranged at the top of the drilling bit body; and the locking nut cap is in threaded connection with the external thread A and the outer cylinder is compressed on the drilling bit body. According to the invention, the great-value rotating guiding drilling system is guaranteed by abandoning a low-value drilling bitunder the extreme condition that the drilling tubular column can not be taken out, so that the too high economic losses are avoided; and the salvage success rate is increased.

Description

technical field [0001] The invention relates to the technical field of drilling tools in the oil and gas industry, in particular to a drill bit that can be thrown away when stuck. Background technique [0002] In the oil and gas industry, horizontal wells and extended-reach wells have obvious advantages in the development and construction of oil and gas wells, and thus derived multilateral well technology. In the process of developing shale gas, almost all adopt the horizontal well mode, and the length of the horizontal well section is getting longer and longer. Once the horizontal wellbore section collapses, the drill string in the horizontal section will be buried, which often leads to expensive The rotary steerable drilling system was buried, unable to deal with other accidents, resulting in huge economic losses. [0003] In order to solve the above problems, the current methods at home and abroad are to strengthen management, standardize operations, and design and selec...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B10/62E21B17/042
CPCE21B10/62E21B17/042
Inventor 宋波
Owner 成都希能能源科技有限公司
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