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Downhole plugging device

A plugging material and cover tube technology, which is applied in wellbore/well components, sealing/package, earthwork drilling and production, etc., can solve the problems of difficult one-time effect and poor effect, so as to reduce collision and scrape, and improve the application area. Wide, stable and good plugging effect

Active Publication Date: 2020-11-13
CHINA UNIV OF PETROLEUM (BEIJING)
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] The purpose of the present invention is to provide a downhole plugging device to alleviate the technical problem that the methods for dealing with leakage in the prior art have relatively poor effects and are difficult to be effective at one time

Method used

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Embodiment Construction

[0035] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by persons of ordinary skill in the art without making creative efforts belong to the protection scope of the present invention.

[0036] Such as figure 1 As shown, the present invention provides a downhole plugging device, comprising: at least one casing, the outer wall of which is provided with at least one channel communicating with the inside and outside; at least one storage tube for filling the plugging material, which is arranged on In at least one cover tube; the detonating cord and the detonating mechanism for detonating the detonating cord, the detonating mechanism is installed ...

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Abstract

The invention provides an underground leakage stopping device which comprises at least one hood barrel, at least one material storage pipe filled with a leakage stopping material, and a detonating fuse and a detonating mechanism for detonating the detonating fuse, wherein at least one channel communicating to the inner and outer sides of the hood barrel is arranged on the outer wall of the hood barrel; the material storage pipe is arranged in the at least one hood barrel; the detonating mechanism is mounted at the upper end of the hood barrel, the upper end of the detonating fuse is connectedto the detonating mechanism, and the lower end of the detonating fuse is arranged in the material storage pipe; when the detonating fuse explodes, the material storage pipe can be exploded and the leakage stopping material in the material storage pipe is driven to be spray out of the hood barrel through the channel. The underground leakage stopping device solves the technical problem that a leakage treatment method in the prior art is relatively poor in effect and is hard to take effect at one time.

Description

technical field [0001] The invention relates to the technical field of downhole construction, in particular to an downhole plugging device. Background technique [0002] In petroleum and geothermal well drilling projects, there are frequent losses; the types of losses include porosity and fractures. When leakage occurs, drilling fluid and other working fluids will directly enter the formation under the action of pressure difference, affecting the normal operation of downhole operations and causing great losses to production. Therefore, it is necessary to seal the lost strata. At present, chemical plugging or cement plugging are usually used. However, in the prior art, there is a technical problem that the effect of the leakage processing method is relatively poor, and it is difficult to achieve an effective result at one time. Contents of the invention [0003] The purpose of the present invention is to provide a downhole leak plugging device to alleviate the technical ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B33/13
CPCE21B33/13
Inventor 张逸群陈安明于超刘亚黄中伟宋先知田守嶒史怀忠王海柱盛茂
Owner CHINA UNIV OF PETROLEUM (BEIJING)
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