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Underground tail end hydraulic switch

A technology of hydraulic switch and hydraulic sliding sleeve, which is applied in wellbore/well components, wellbore/well valve devices, earthwork drilling and production, etc. It can solve the problem of no downhole pipeline end device controlling hydraulic switch, no existing reference technology, Structure and application problems, to achieve the effect of eliminating the need for locking devices, compact and reasonable structure, and ensuring control accuracy

Pending Publication Date: 2018-12-25
MIANYANG GUMEI TECH
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] In the prior art, there is no control hydraulic switch for the end device of the downhole pipeline, and there is no existing reference technology, structure and application

Method used

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  • Underground tail end hydraulic switch
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  • Underground tail end hydraulic switch

Examples

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Embodiment 1

[0031] The downhole terminal hydraulic switch of this embodiment includes a housing, a ball seat hydraulic sliding sleeve assembly, a connecting plate, a push rod, and an opening and closing mechanism. The opening and closing mechanism includes a valve core, a valve core control spring matched with the valve core, and a casing. , the bushing is set on the push rod. The ball seat hydraulic sliding sleeve assembly includes a hydraulic sliding sleeve, a sphere arranged in the hydraulic sliding sleeve, and a sphere return spring. A counterbore is arranged in the hydraulic sliding sleeve, and the sphere return spring can press the sphere to the bottom of the counterbore. The two sides of the connecting plate are respectively connected with the ball seat hydraulic sliding sleeve assembly and the push rod, and the inner side of the housing is provided with a hole matching with the connecting plate; the hole is provided with a pressure control spring interacting with the connecting pla...

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Abstract

The invention discloses an underground tail end hydraulic switch, and aims to solve the problem that, under the prior technical conditions in the field of petroleum exploitation, constrained by the horizontal section of a horizontal well and a deep well section of a well with a large slope, a test device at the tail end of an underground pipeline cannot be controlled by using a switch, and the bottom condition of the petroleum well cannot be tested is solved. The device comprises a shell, a ball seat hydraulic sliding sleeve assembly, a connecting plate, a push rod, and an opening and closingmechanism, the opening and closing mechanism comprises a valve core, a valve core control spring and a sleeve. In view of the defects in the prior art, the prior underground hydraulic control technology is used to provide a brand-new (improved) underground hydraulic switch without changing the prior petroleum well operation specifications. According to the invention, the on-off control of the switch of the test device at the tail end of the underground petroleum is achieved without changing the electrical drive environment, and the normal operation of the petroleum well is not affected. The device has the advantages of ingenious conception and reasonable design, is a brand-new exploration to the underground hydraulic switch structure, and has remarkable progressive significance on the petroleum well detection.

Description

technical field [0001] The invention relates to the field of petroleum exploitation, and is a switch control technology applied to a testing device at the end of a downhole oil pipe. Background technique [0002] For the horizontal section of a horizontal well or the deep well section of a highly deviated well, it has always been a difficult problem in the industry to send the logging instrument and the connecting cable to the bottom of the well to test the condition of the bottom of the oil well. [0003] In the prior art, there is no control hydraulic switch for the downhole pipeline end device, and there is no existing reference technology, structure and application. Therefore, the present invention provides a brand-new terminal hydraulic switch, which belongs to the new application and new structure of downhole control technology, and has a good application prospect. Contents of the invention [0004] The purpose of the present invention is: under the existing technic...

Claims

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Application Information

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IPC IPC(8): E21B34/06E21B34/16
CPCE21B34/06E21B34/16E21B2200/06E21B2200/04
Inventor 梅坚赵燕梅罗武
Owner MIANYANG GUMEI TECH
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