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Deflation valve capable of being installed at any depth of underground

A technology of arbitrary depth and deflation valve, which is applied in wellbore/well components, wellbore/well valve devices, earthwork drilling and production, etc. It can solve the problem that the deflation valve is difficult to open and achieve the effect of increasing the scope of use

Inactive Publication Date: 2015-10-14
SHANGHAI EXTRONG OILFIELD TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] In order to solve the problem that the existing purge valve is difficult to open, the present invention aims to provide a purge valve that can be installed at any depth underground

Method used

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  • Deflation valve capable of being installed at any depth of underground

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Embodiment Construction

[0009] The present invention will be further described now in conjunction with accompanying drawing.

[0010] see figure 1 , figure 1 What is shown is an embodiment of the present invention, including a pressure cap 1, a valve body 5, and a hollow lower joint 13. The upper end of the valve body 5 is connected to the pressure cap 1, and the lower end is connected to the lower joint 13. The spring 4 in the spring sleeve 3 bears against the piston 8; the side wall of the valve body 5 is provided with an air outlet, and the air outlet is fully opened when the piston 8 is at the stroke end.

[0011] The piston 8 is provided with a through hole passing through its upper end and lower end, and the through hole is connected to the cavity inside the lower joint 13 and the spring sleeve 3; in addition, the cross-sectional area of ​​the upper end and the lower end of the piston 8 is equal.

[0012] Wherein, the piston 8 is formed by connecting an upper piston and a lower piston.

[00...

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Abstract

The invention relates to a deflation valve capable of being installed at any depth of underground. The deflation valve comprises a pressing cap, a valve body and a hollow lower connector, the upper end of the valve body is connected with the pressing cap, the lower end of the valve body is connected with the lower connector, and the pressing cap abuts against a piston through a spring in a spring sleeve located in the valve body; the side wall of the valve body is provided with an air outlet, the air outlet is fully opened when the piston is located at the tail end of a stroke, the piston is provided with a through hole communicating the upper end and the lower end of the piston, and the through hole is communicated with the lower connector and a cavity in the spring sleeve; in addition, the cross sectional area of the upper end of the piston is equal to that of the lower end of the piston. Compared with the prior art, the offset of the upper and lower pressure difference of the piston is achieved with the through hole communicating the piston, and therefore the piston can flexibly move at any depth; accordingly, a product can not be influenced by the depth, and the using range is widened.

Description

technical field [0001] The invention relates to a device for petroleum exploitation, in particular to a gas release valve which can be installed at any depth underground. Background technique [0002] The air release valve is a device used in oil exploitation. It is generally used in conjunction with a packer. Its function is to open the exhaust port to discharge gas upward when the air pressure reaches a certain value during downhole operations. [0003] The piston of the existing exhaust valve is solid, and one side receives the pressure in the well, so it is difficult to open upward after a certain depth, and cannot play the role of exhaust. Contents of the invention [0004] In order to solve the problem that the existing purge valve is difficult to open, the present invention aims to provide a purge valve which can be installed at any depth underground. [0005] The technical scheme adopted in the present invention includes a pressure cap, a valve body, and a hollow ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B34/06
Inventor 张伟博庞超然蒋成飞杨维庆
Owner SHANGHAI EXTRONG OILFIELD TECH
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