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Underground centralizer capable of combining reaming and shunting plugging functions

A centralizer and functional technology, which is applied in wellbore/well components, wellbore/well valve devices, drilling equipment, etc., can solve problems such as affecting construction progress, pipeline blockage, failure accidents, etc., achieving a wide range of applications, reducing Operational risk, the effect of improving the timeliness

Pending Publication Date: 2021-01-22
深圳越海工程技术有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] Due to the complex downhole working conditions, ordinary stabilizers have a short working life downhole during the drilling process, and failure accidents often occur, and most of the centralizers currently on the market do not have the function of shunting. The phenomenon of pipeline clogging due to the entry of larger particles of plugging materials, etc., not only causes equipment damage, but also affects the construction progress. Therefore, in view of the above problems, a downhole centralizer that can combine the functions of reaming and diversion plugging is proposed.

Method used

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  • Underground centralizer capable of combining reaming and shunting plugging functions
  • Underground centralizer capable of combining reaming and shunting plugging functions
  • Underground centralizer capable of combining reaming and shunting plugging functions

Examples

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Effect test

Embodiment 1

[0031] see Figure 1-11 , the present invention provides a technical solution:

[0032] A downhole centralizer that can be combined with drilling and diversion plugging functions, including a spiral centralizer 1, a slide valve device 2, a connecting part 3 and a ball catcher 4, the spiral centralizer 1 is provided with a slide valve device 2, the slide valve The outer side of the lower end of the device 2 is fixedly connected with the connecting part 3 , the inner side of the upper end of the connecting part 3 is fixedly connected with the screw centralizer 1 , and the inner side of the lower end of the connecting part 3 is fixedly connected with the ball catcher 4 .

[0033] The central part of the spiral centralizer 1 is provided with a spiral centralizing wing 5, and the inner side of the spiral centralizing wing 5 is provided with a threaded hole 6 and a spring groove 7 close to the body. The inner cavity of the centralizer 1 is connected, and the left side of the spiral...

Embodiment 2

[0036] see Figure 1-11 , the present invention provides a technical solution:

[0037] A downhole centralizer that can be combined with drilling and diversion plugging functions, including a spiral centralizer 1, a slide valve device 2, a connecting part 3 and a ball catcher 4, the spiral centralizer 1 is provided with a slide valve device 2, the slide valve The outer side of the lower end of the device 2 is fixedly connected with the connecting part 3 , the inner side of the upper end of the connecting part 3 is fixedly connected with the screw centralizer 1 , and the inner side of the lower end of the connecting part 3 is fixedly connected with the ball catcher 4 .

[0038] The central part of the spiral centralizer 1 is provided with a spiral centralizing wing 5, and the inner side of the spiral centralizing wing 5 is provided with a threaded hole 6 and a spring groove 7 close to the body. The inner cavity of the centralizer 1 is connected, and the left side of the spiral...

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Abstract

The invention relates to the technical field of drilling machinery, in particular to an underground centralizer capable of combining reaming and shunting plugging functions. The underground centralizer comprises a spiral centralizer, a slide valve device, a connecting part and a ball receiver, wherein the slide valve device is arranged in the spiral centralizer, the outer side of the lower end ofthe slide valve device is fixedly connected with the connecting part, the inner side of the upper end of the connecting part is fixedly connected with the spiral centralizer, and the inner side of thelower end of the connecting part is fixedly connected with the ball receiver. According to the underground centralizer, the spiral centralizer, the slide valve device, the connecting part and the ball receiver are arranged, so that the device has the advantages of high structural reliability and wide application range and can be suitable for most drilling operations; and the shunting function iscombined with different centralizer functions such as reaming, back reaming, micro reaming, small size and the like, so that the drilling and completion time efficiency is improved, the drilling and completion operation risk is reduced, additionally, the centralizer can be repeatedly used after quick-wear parts are disassembled, subjected to nondestructive testing, replaced, installed and tested to be qualified, and the maintenance is simple and convenient.

Description

technical field [0001] The invention relates to the technical field of drilling machinery, in particular to a downhole centralizer which can combine the functions of reaming and diversion plugging. Background technique [0002] The stabilizer, also known as the centralizer, is a tool for stabilizing downhole drilling tools and preventing deflection. It is connected to a section of drill string close to the thick diameter drilling tool to stabilize the drilling direction. It is a tool for oil, natural gas and geological exploration. In drilling engineering, it is an important tool to prevent the change of well deviation. [0003] Due to the complex downhole working conditions, ordinary stabilizers have a short working life downhole during the drilling process, and failure accidents often occur, and most of the centralizers currently on the market do not have the function of shunting. The phenomenon of pipeline clogging due to the entry of larger particles of plugging materia...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/10E21B34/14
CPCE21B17/1078E21B34/14
Inventor 彭美强徐俊刘海涛
Owner 深圳越海工程技术有限公司