Access type associated gas recycling device

A recovery device and associated gas technology, which is applied in the direction of wellbore/well valve devices, production fluid, wellbore/well components, etc., and can solve problems such as valve core and seat freezing blockage

Inactive Publication Date: 2015-04-15
PETROCHINA CO LTD
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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 plug-in associated gas recovery device to solve the problem of freezing of the valve core and valve seat and achieve the purpose of completely recovering the associated gas

Method used

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Embodiment

[0010] refer to figure 1 and 2 Embodiments of the present invention are further described:

[0011] The device mainly includes adjustment wheel 1, upper pressure cap 2, pressure regulating piston 3, pressure transmission piston 4, spring seat 5, vent hole 6, valve holder 7, valve ball 8, valve seat 9, lower pressure cap 10, pressure Table 11 and valve body 12;

[0012] The valve body 12 is vertically inserted and welded in the Christmas tree 13 . The lower end of the valve body 12 is internally threaded to the lower pressure cap 10, the middle cylinder wall is provided with a radial exhaust hole 6, the upper end is externally threaded to the upper pressure cap 2 provided with the adjustment wheel 1, and the valve body 12 below the upper pressure cap 2 A pressure gauge 11 is provided on the side wall. The valve body 12 is provided with a valve seat 9 , the lower end of the valve seat 9 is internally threaded to the lower pressure cap 10 , and the upper end contacts the uppe...

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PUM

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Abstract

The invention discloses an access type associated gas recycling device which is designed for solving the frozen blocking problem of valve core and valve seat as well as completely recycling the associated gas. Valve body of the device is vertically inserted and fixed in a petroleum transmission pipeline; the lower end of the valve body is connected with a lower pressing cap; the middle cylindrical wall is provided with a radial gas vent; the upper end is connected with an upper pressing cap which is provided with an adjusting wheel; the lateral wall of the valve body below the upper pressing cap is provided with a pressure gauge; the valve seat is installed inside the valve body; the lower end of the valve seat is connected with the lower pressing cap; the upper end contacts with the upper pressing cap; the upper portion of the valve seat is hermetically provided with a pressure regulating piston which is connected with the adjusting wheel and a lateral pressure conduction hole corresponding to the pressure gauge; the inner stepped position is hermetically provided with a pressure conduction piston; the lower end of the pressure conduction piston is sequentially connected with a spring seat for containing a spring, and a valve support; the lower end of the valve support is provided with a valve ball. The device is installed and operated inside the petroleum transmission pipeline; the device can be heated with the help of the heat of the crude oil on site, thereby completely solving the problems that heat is absorbed when releasing the gas and the constant pressure vent valve is frozen and blocked in winter.

Description

technical field [0001] The invention relates to an access type associated gas recovery device, which belongs to the technical field of oil recovery engineering. Background technique [0002] At present, the associated gas recovery process in domestic oilfields mainly adopts surface recovery technology, mainly gas collection and mixed transportation with wellhead constant pressure valves. The constant pressure valve absorbs heat when the gas is released, and its thermal insulation performance is poor in winter, and the valve core and seat are often unusable due to freezing. Contents of the invention [0003] The object of the present invention is to provide a plug-in associated gas recovery device to solve the problem of freezing of the valve core and valve seat and achieve the purpose of completely recovering the associated gas. [0004] Concrete technical content of the present invention is as follows: [0005] The valve body of this device is vertically inserted and fi...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B43/00E21B34/02
CPCE21B34/02E21B43/00E21B2200/04
Inventor 魏立军郭占春崔斌常振武王林平刘一山覃川杨会丰张倩王曼晏耿成古正富
Owner PETROCHINA CO LTD
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