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Blowout preventer for wellhead sealing

A technology for blowout preventer and sealing, which is applied in the directions of sealing/isolation, wellbore/well components, earthwork drilling and production, etc. It can solve the problems of wellhead sealing failure, hard-to-seal blocks, waste of resources, etc., and achieves improved service life, Effects of reducing waste and improving safety

Pending Publication Date: 2021-07-13
吴帮民
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0003] When the sealing block of the existing blowout preventer is damaged, it is difficult to replace the sealing block, and only the entire blowout preventer can be replaced, resulting in a lot of waste of resources. The hand wheel of the blowout preventer is exposed to the outside, and it is easy to be misoperated by other personnel, resulting in the failure of the wellhead seal and the risk of blowout. For this reason, we provide a blowout preventer for wellhead sealing

Method used

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  • Blowout preventer for wellhead sealing
  • Blowout preventer for wellhead sealing
  • Blowout preventer for wellhead sealing

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Embodiment Construction

[0024] The following will clearly and completely describe the technical solutions in the embodiments of the present invention with reference to the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only some, not all, embodiments of the present invention.

[0025] see Figure 1 to Figure 5 , the present invention provides a technical solution: a blowout preventer for wellhead sealing, including a blowout preventer body 1, a central pipe hole 18, a chute 2 is arranged inside the blowout preventer body 1, and the inside of the chute 2 is clamped There is a left sealing block 3 and a right sealing block 4, the right side of the left sealing block 3 is provided with a groove 31, and the left side of the right sealing block 4 is provided with a protrusion 41, and the protrusion 41 matches the groove 31 , through the combined use of the groove 31 and the protrusion 41, when the left sealing block 3 and the right sealing block...

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Abstract

The invention discloses a blowout preventer for wellhead sealing, and relates to the technical field of oil exploitation, in particular to the blowout preventer for wellhead sealing. The blowout preventer for wellhead sealing comprises a blowout preventer body and a central pipe hole; a sliding chute is arranged in the blowout preventer body, and a left side sealing block and a right side sealing block are clamped in the sliding chute; a hydraulic cylinder is fixedly installed on the left side of the blowout preventer body; a push plate is arranged in the hydraulic cylinder; and a push rod is fixedly connected to the middle of the push plate in a sleeving mode. According to the blowout preventer for wellhead sealing, through matched use of a groove and a protruding block, when the left side sealing block and the right side sealing block are combined together, the protruding block is just inserted into the groove, the contact area of the left side sealing block and the right side sealing block is increased, and the interaction force between the left side sealing block and the right side sealing block is improved; and the left sealing block and the right sealing block are prevented from moving up and down, and the sealing and blowout preventing effect is enhanced.

Description

technical field [0001] The invention relates to the technical field of oil exploitation, in particular to a blowout preventer for wellhead sealing. Background technique [0002] The blowout preventer is used to close the wellhead in the process of oil testing, workover, and completion to prevent blowout accidents. It combines the functions of full seal and half seal. It has the characteristics of simple structure, easy operation, and high pressure resistance. , is a safety sealing wellhead device commonly used in oil fields to prevent blowout. [0003] When the sealing block of the existing blowout preventer is damaged, it is difficult to replace the sealing block, and only the entire blowout preventer can be replaced, resulting in a lot of waste of resources. The handwheel of the blowout preventer is exposed to the outside, and it is easy to be misoperated by other personnel to cause the failure of the wellhead seal and the risk of blowout. For this reason, we provide a bl...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/03E21B33/06E21B41/00E21B23/00
CPCE21B23/00E21B33/03E21B33/06E21B41/00
Inventor 吴帮民
Owner 吴帮民
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