Anti-torsion crack and abrasion-resistant rubber core of blowout preventer

A blowout preventer and anti-twist technology, which is used in wellbore/well components, earthwork drilling, sealing/packaging, etc. Protection and other issues, to achieve the effect of not easily falling apart and twisting, good stability, and improved stability

Active Publication Date: 2017-08-15
四川新为橡塑有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] The purpose of the present invention is to: the reinforcement performance of the existing rubber core rib proposed above is low, and the support body cannot be well protected; and the oblique force generated when the drill pipe is screwed in and out cannot be well The ground acts as a force, so it will cause twisting of the support body; and the problem of low wear resistance of the rubber core, the invention provides a anti-twist and anti-wear BOP rubber core

Method used

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  • Anti-torsion crack and abrasion-resistant rubber core of blowout preventer

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Experimental program
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Embodiment 1

[0031] like Figure 1-7 As shown, an anti-twist and anti-wear BOP rubber core includes a rubber body 1 and a support body 2 evenly distributed in the rubber body 1. The support body 2 includes a top plate 3, a vertical plate 4 and a bottom plate 5, and the vertical plate 4 is arranged between the top plate 3 and the bottom plate 5, and a sloping plate 6 is also connected between the top plate 3 and the vertical plate 4, and a vertical plate is also connected between the top plate 3 and the bottom plate 5, and between the sloping plate 6 and the bottom plate 5 The support plate 7, a horizontal support plate 8 is also provided between the vertical plate 4 and the vertical support plate 7, and between adjacent vertical support plates 7. By replacing the strip-shaped reinforcing rib with a plate-shaped reinforcing plate, the stability of the support body 2 is better, and the horizontal support plate 8 between the top plate 3 and the bottom plate 5, and between the inclined plate 6...

Embodiment 2

[0033] This embodiment is further defined on the basis of the above embodiments. In order to solve the problem that the rubber core will be twisted due to the oblique force generated when the drill pipe 24 is screwed in and out, the horizontal support plate 8 and the vertical The support plates 7 are provided with rice-shaped reinforcing ribs 9 . The rice font reinforcing rib 9 is arranged on the surface of the horizontal support plate 8 and the vertical support plate 7, and the end of the rice font reinforcing rib 9 is connected with the edge of the horizontal support plate 8 and the vertical support plate 7, and the designed rice font The reinforcing rib 9 can well support and reinforce in eight directions. Compared with the existing single-line reinforcing rib, it has more supporting directions, and can well support the drill pipe 24 during rotation. The oblique force generated when turning in and out is supported, which greatly improves the supporting strength of the suppo...

Embodiment 3

[0036]This embodiment is further defined on the basis of the above embodiments. In order to solve the problem of dislocation between the support body 2 and the rubber body 1, the outer surfaces of the top plate 3, the vertical plate 4, the bottom plate 5 and the inclined plate 6 are A protruding block 10 inserted into the rubber body 1 is provided, and a reinforcing bar 11 inclined to the supporting body 2 is provided on the side wall of the protruding block 10 . After the protrusion 10 is inserted into the rubber body 1, the sliding friction between the support body 2 and the rubber body 1 can be increased, and the phenomenon of detachment of the support body 2 and the rubber body 1 when receiving external stress can be avoided.

[0037] Other parts of this embodiment are the same as those of the foregoing embodiment, and will not be repeated here.

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Abstract

The invention provides an anti-torsion crack and abrasion-resistant rubber core of a blowout preventer. The anti-torsion crack and abrasion-resistant rubber core of a blowout preventer comprises a rubber body and support bodies uniformly distributed in the rubber body, wherein each support body comprises a top plate, a vertical plate and a bottom plate; the vertical plate is arranged between the top plate and the bottom plate; an oblique plate is also connected between the top plate and the vertical plate; a vertical support plate is also connected between the top plate and the bottom plate and between the oblique plate and the bottom plate; a transverse support plate is also arranged between the vertical plate and the vertical support plate and between adjacent vertical support plates. According to the anti-torsion crack and abrasion-resistant rubber core of a blowout preventer provided by the invention, strip reinforcing ribs are replaced by plate-like reinforcing plates so that the stability of the support bodies is better; the transverse plates between the top plate and the bottom plate and between the oblique plate and the bottom plate are arranged uniformly rather than in one-to-one correspondence, a perfect support effect can be realized, and local stresses of the support bodies can be dispersed, thereby further improving the stability of the support bodies and avoiding frequent falling apart and torsion crack.

Description

technical field [0001] The invention belongs to the field of oil and gas drilling tools, and in particular relates to a twist-crack and wear-resistant blowout preventer rubber core. Background technique [0002] In the process of oil or natural gas drilling, if high-pressure fluid in the formation is encountered, the high-pressure fluid in the formation will rush into the wellbore, causing well kick or blowout. Therefore, in the drilling process, it is necessary to use anti- Injector to prevent the occurrence of "blowout" phenomenon. The rubber core is an extremely important accessory on the blowout preventer. It is composed of multiple supports and rubber bodies. When in use, under the action of the hydraulic control system of the blowout preventer, the rubber body in the rubber core faces in Manzhanzhan tightly hugs the drilling tool to seal the well, and fully seals the wellhead when there is no drilling tool. [0003] There are some deficiencies in the support body of ...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B33/06
CPCE21B33/06Y02E30/30
Inventor 周永国吴向东冯旭海梁玉磊杨松
Owner 四川新为橡塑有限公司
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