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Multipurpose annular preventer

An annular blowout preventer, multi-purpose technology, applied in wellbore/well components, earthwork drilling, sealing/isolation, etc., can solve the problems of high equipment cost, high risk of use, complicated operation of annular blowout preventer, etc.

Inactive Publication Date: 2014-01-29
SHAANXI QIYUAN TECH DEV
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0003] The present invention aims to solve the problems of complex operation, high use risk and high equipment cost of the original annular blowout preventer

Method used

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  • Multipurpose annular preventer

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Embodiment Construction

[0012] The multi-purpose annular blowout preventer of the present invention is composed of an upper flange 6, a multi-purpose annular rubber sleeve 5, a casing 4, a lower flange 3, and a protective cap 7. The inside of the casing 4 is provided with a multi-purpose Annular rubber sleeve 5, special oil pipe bushing can be loaded into the rubber sleeve, and the bushing is screwed in from the top of the blowout preventer, which can straighten the oil pipe, prevent falling objects from falling into the well, and effectively protect the blowout preventer rubber sleeve.

[0013] By operating the hydraulic control system, the high-pressure oil enters the annular space between the rubber sleeve and the housing 4 from the oil inlet 2 of the housing 4, and squeezes the rubber sleeve to shrink to the center to hold the oil pipe, cable, wire rope and other tools tightly, or fully seal it. The wellhead, to achieve its purpose of closing the well, close the wellhead quickly. When it is neces...

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Abstract

The invention relates to the field of petroleum machinery, in particular to a multipurpose annular preventer which is formed by an upper flange, a multipurpose annular rubber sheath, a casing, an exhaust port, an oil inlet port, a lower flange, a protective cap and the like, wherein the multipurpose annular gum sheath is arranged in the casing. The multipurpose annular preventer is advanced in structure, easy to operate and multiple in purpose.

Description

technical field [0001] The invention relates to the field of petroleum machinery, in particular to a multipurpose annular blowout preventer. Background technique [0002] At present, in the process of workover and oil testing, ram-type blowout preventers and annular blowout preventers are often used. Due to the large volume, high cost and complicated maintenance of annular blowout preventers, they have not been widely used in oil test (workover) operations. Use; ram type BOP has been widely used, but ram type BOP still has many shortcomings such as difficulty in closing, high risk of use, complicated operation, and high cost of the whole set of equipment. Contents of the invention [0003] The invention aims to solve the problems of complicated operation, high use risk and high equipment cost of the original annular blowout preventer. [0004] The multi-purpose annular blowout preventer of the present invention is composed of upper flange, multi-purpose annular rubber sle...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/06
Inventor 周莉英
Owner SHAANXI QIYUAN TECH DEV
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