Single-stroke oil tube pressure testing valve

A single-stroke, tubing technology, applied in wellbore/well valve devices, wellbore/well components, earth-moving drilling, etc. Ground and other problems, to achieve the effect of simple closing, opening and locking structure, convenient operation and high structural stability

Inactive Publication Date: 2019-12-13
BAOJI CHANGYOU PETROLEUM EQUIP CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

The current method of pressure testing the working string is to use a check valve structure, so that the string above the check valve is a closed space, so that the working string can be tested for pressure, but after the pressure test is completed in this method, the liquid flow It can only flow from bottom to top, not from top to bottom, so positive circulation construction operations cannot be carried out. When the working string is lifted, the liquid in the tubing cannot flow into the well, and will be lifted out of the ground, causing environmental pollution

Method used

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  • Single-stroke oil tube pressure testing valve

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Embodiment Construction

[0013] The following examples facilitate a better understanding of the present invention, but do not limit the present invention. The connection methods of the components in the following embodiments are conventional connection methods unless otherwise specified; the components used in the following embodiments are commercially available unless otherwise specified.

[0014] In the present invention, it should be understood that the terms "upper", "lower", "front", "rear", "left", "right", top", "bottom" are , "inner", "outer" and other indicated orientations or positional relationships are based on the orientations or positional relationships shown in the drawings, which are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the referred devices or elements must Having a particular orientation, being constructed and operating in a particular orientation, and therefore not to be construed as limi...

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Abstract

The invention provides a single-stroke oil tube pressure testing valve which is a full-bore tool. An upper joint, a ball valve outer sleeve and a spline lock sleeve move up and down together in the axial direction to push an operating pin so as to close and open the ball valve, so that closing and opening of the ball valve can be locked; after the ball valve is closed, the single-stroke oil tube pressure testing valve carries out pressure testing on a working tubular column; and after the ball valve is opened, an oil tubular column is penetrated up and down, and when the oil tubular column islifted, liquid in the oil tube flows into a well to prevent the oil liquid from being lifted out of the ground, so that the environment is not polluted. The single-stroke oil tube pressure testing valve is simple in structure, convenient to operate and high in structural stability performance.

Description

technical field [0001] The invention belongs to the technical field of valves, in particular to a single-stroke oil pipe pressure test valve. Background technique [0002] When the petroleum industry is in operation, according to the operation requirements, in order to achieve the purpose of normal construction, it is often necessary to verify the compressive strength of the downhole working string of the operation well and the overall sealing performance of the string, and check whether the tubing meets the requirements. The current method of pressure testing the working string is to use a check valve structure, so that the string above the check valve is a closed space, so that the working string can be tested for pressure, but after the pressure test is completed in this method, the liquid flow It can only flow from bottom to top, not from top to bottom, so positive circulation construction operations cannot be carried out. When the working string is lifted, the liquid in...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B34/12E21B47/117
CPCE21B34/12
Inventor 张锦锦石海兵张亭杨丽丽
Owner BAOJI CHANGYOU PETROLEUM EQUIP CO LTD
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