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Intermediary seals for ultra-deep water applications

A sealing layer, annular sealing technology, applied in the connection of packing seal by fluid pressure, fluid tightness test, fluid tightness measurement using liquid/vacuum degree, etc., can solve the loss, reduction of compression force, etc. problems, to achieve accurate prediction and improve reliability.

Active Publication Date: 2017-12-05
GE英国石油和天然气有限公司
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Additionally, there may be issues with properly positioning the O-rings, and the compressive force on these O-rings required to maintain their sealing integrity may decrease or even lost

Method used

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  • Intermediary seals for ultra-deep water applications
  • Intermediary seals for ultra-deep water applications
  • Intermediary seals for ultra-deep water applications

Examples

Experimental program
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Embodiment Construction

[0036] Figure 5 A section of a portion of the sealing structure of the end fitting is shown. The assembly includes a first collar member 508 and a second collar member 510 arranged to terminate an intermediate sealing layer 512 of the pipe body. An intervening sealing layer may be arranged radially outside the pressure armor layer 514 and serve to seal the pressure armor layer.

[0037] The assembly also includes intervening seal rings 516 , 518 for blocking potential leak paths along the radially outer faces of first collar member 508 and intervening seal layer 512 . The first seal ring is disposed between the first collar member and the second collar member and is disposed on a portion of the intermediate seal layer 512 . A second seal ring is disposed at the opposite side of the second collar member 510 and over a portion of the intermediate seal layer 512 . As such, in this example, the first and second seal rings have the same diameter (and radius). Between the seal ...

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PUM

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Abstract

A sealing structure and a method for testing the integrity of the sealing structure of a flexible pipe are disclosed. The method includes positioning a first annular sealing element and a second annular sealing element in a joint between two elements of a flexible pipe, wherein a region of the joint is located between the first annular sealing element and the second annular sealing element. between the sealing elements; and pressurizing the area between the first sealing element and the second sealing element to a predetermined pressure of 0.2 MPa or greater through a port extending toward the area.

Description

technical field [0001] The present invention relates to intervening seals for ultra-deep water applications. In particular, but not exclusively, the invention relates to fluid sealing systems provided in end fittings of flexible pipes, including sealing configurations and testing thereof. Background technique [0002] Conventional flexible pipe is used to transport product fluids such as oil and / or gas and / or water from one location to another. Flexible pipes are particularly useful in connecting subsea locations (which may be deep underwater, say 1000 meters or more) to sea surface locations. The tube may have an inner diameter typically up to about 0.6 metres. Flexible pipe is generally formed as an assembly of a flexible pipe body and one or more end fittings. The pipe body is typically formed as a combination of layered materials forming a pressure-containing conduit. The tube structure allows for large deflections without inducing bending stresses that impair the fu...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): G01M3/28F16L33/01
CPCF16L33/01G01M3/2853F16L2201/30G01N19/04F16L17/02F16L33/16F16L33/32
Inventor 朱迪马尔·德·阿西斯·克利夫拉里奥法比奥·德·索萨·皮雷斯费莉佩·阿雷萨·瓦尔加斯瓦尔代尔·蒂诺科·达·席尔瓦
Owner GE英国石油和天然气有限公司