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Tensioner Cylinder Connection with Multiple Axis Degrees of Freedom

A technology of tensioner and components, applied in the direction of wellbore/well components, production fluid, drilling equipment, etc., can solve the problems of unsuitable TLP combination, etc., achieve the effect of reducing demand, not easy to corrode, and eliminating high pressure accumulation

Active Publication Date: 2016-11-16
VETCO GRAY
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

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Problems solved by technology

[0007] While it is desirable to use both push-up tensioners, the TLP and RAM models, the RAM-type push-up tensioners built to date are not currently suitable for use with the TLP due to the varying riser inclination

Method used

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  • Tensioner Cylinder Connection with Multiple Axis Degrees of Freedom
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  • Tensioner Cylinder Connection with Multiple Axis Degrees of Freedom

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Embodiment Construction

[0023] The invention will now be described more fully hereinafter with reference to the accompanying drawings, which show embodiments of the invention. However, this invention may be embodied in many different forms and should not be construed as limited to the illustrated embodiments set forth herein. Rather, these embodiments are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the invention to those skilled in the art. Like numbers refer to like elements throughout, and primary labels, if used, refer to similar elements in alternative embodiments.

[0024] In the following discussion, numerous specific details are set forth in order to provide a thorough understanding of the invention. It will be apparent, however, to one skilled in the art that the present invention may be practiced without such specific details. Additionally, details pertaining to drilling, running operations, etc. have been omitted in most instances, si...

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Abstract

The present invention relates to a tensioner cylinder connection with multiple axial degrees of freedom, specifically a coupler with two axial degrees of freedom coupling a hydropneumatic cylinder to a tensioning ring of a riser tensioner mounted to a platform. The struts extend along the axis of the cylinder, and an intermediate sleeve is arranged around the struts to form a strut annulus. The outer sleeve is fixed to the tensioning ring and defines a cavity into which the strut and the intermediate sleeve are inserted so that an annular space is formed between the sleeve and the outer sleeve. The outer sleeve is coupled to the intermediate sleeve such that the outer sleeve is pivotable relative to the intermediate sleeve on a coupling between the outer sleeve and the intermediate sleeve. The intermediate sleeve is coupled to the strut such that the intermediate sleeve is pivotable relative to the strut on a coupling between the intermediate sleeve and the strut.

Description

[0001] This application claims benefit and priority to Aksel et al., U.S. Provisional Patent Application No. 61 / 557,231, entitled "Tensioner Cylinder Connections with Multiaxial Degrees of Freedom," filed November 8, 2011, which is hereby incorporated by reference integrated as a whole. technical field [0002] The present invention relates generally to marine riser tensioners and, in particular, to push-up tensioners that accommodate riser inclination with a tensioner cylinder connection having multiple axial degrees of freedom. Background technique [0003] Offshore production platforms must support production risers from oil and gas wells that extend from the subsea well to the platform. For platforms fixed to the sea floor this is easy to achieve and is well known in the art. However, support risers present a significant problem for deepwater subsea completions that require the use of floating platforms such as tension leg platforms (TLP) or semi-submersible platforms. ...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): E21B43/01B63B35/44
CPCE21B19/006E21B19/00E21B19/004
Inventor B.阿克塞尔J.W.小帕利尼S.M.王P.J.波特林炽杰
Owner VETCO GRAY
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