Multilayer testing sampling valve

A technology of sampling valve and sampling cavity, which is applied in the direction of wellbore/well valve device, wellbore/well parts, earthwork drilling and mining, etc., can solve the problems that stratum sampling and multi-layer testing cannot be realized at the same time, and achieve convenient construction measures Effect

Active Publication Date: 2016-12-07
BC P INC CHINA NAT PETROLEUM CORP +1
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

One is to realize the opening and closing of the valve body by lifting the lower pipe string (represented by the MFE test valve); the other is to realize the opening and closing of the valve body by pressing the annular space (represented by the APR test valve); The first is to realize the opening and closing of th

Method used

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  • Multilayer testing sampling valve
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Embodiment Construction

[0009] Below in conjunction with accompanying drawing and specific embodiment the present invention is described in further detail:

[0010] Such as figure 1 , 2 As shown, the multi-layer test sampling valve of the present invention includes a mandrel 8 and a housing 2, the housing 2 is cylindrical, and the passage of the bell mouth section 6 is formed in the lower section of the housing 2 inner cavity, and the housing 2 The top is provided with a through hole matching the outer diameter of the mandrel 8, the mandrel 8 with the main fluid channel 10 passes through the through hole, and two "o"-shaped sealing rings 1, 3 are embedded in the inner wall of the through hole, when the mandrel 8 plays a sealing role when moving up and down in the through hole, and forms a ring 11 on the outer wall of the lower half of the mandrel 8 that matches the inner cavity of the housing 2, and the outer peripheral surface of the convex ring 11 is embedded with two "o ” type sealing rings 4 an...

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PUM

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Abstract

The invention discloses a multilayer testing sampling valve. The multilayer testing sampling valve comprises a mandrel and a shell; the shell is shaped like a cylinder, a channel with a flared section is formed in the lower section of an inner cavity of the shell, a through hole matched with the outer diameter of the mandrel is formed in the top end of the shell, the mandrel with a main liquid channel penetrates through the through hole, two o-shaped sealing rings are embedded in the inner wall of the through hole, the sealing effect is achieved when the mandrel moves up and down in the through hole, a convex ring matched with the inner cavity of the shell is formed on the outer wall, on the lower half part, of the mandrel, two o-shaped sealing rings are embedded in the outer peripheral face of the convex ring, the mandrel, the convex ring and the inner cavity of the shell can form a closed sampling cavity, a mandrel side opening is formed in the side face of the upper portion of the mandrel, when the bottom of the convex ring is located at the bottom of the inner cavity above the flared section, the mandrel side opening is just located between the o-shaped sealing rings of the through hole in the top end of the shell, and the sampling cavity is a closed cavity. According to the multilayer testing sampling valve, switching-on and switching-off are only for a single layer and do not affect communication of a main runner.

Description

technical field [0001] The invention relates to a sampling valve, in particular to a multi-layer testing sampling valve for oil testing. Background technique [0002] Well testing is an important part of oil field production. After years of production practice, oil testing and testing technology has developed into a pipe string construction technology with testing valves, packers and pressure gauges as the main tools. The test valve is an indispensable main tool for communicating the formation fluid with the pipe string, and three test valves with different structures have been formed. One is to realize the opening and closing of the valve body by lifting the lower pipe string (represented by the MFE test valve); the other is to realize the opening and closing of the valve body by pressing the annular space (represented by the APR test valve); The first is to realize the opening and closing of the valve body (represented by the sliding sleeve test valve) by throwing the ba...

Claims

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Application Information

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IPC IPC(8): E21B34/06E21B49/08
CPCE21B34/06E21B49/08
Inventor 刘萍雷鹏杨先辉朱礼斌刘述忍陈海波任永宏高硕贾文义张洪亮
Owner BC P INC CHINA NAT PETROLEUM CORP
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