Marine riser vortex-induced vibration abatement device

A technology of vortex-induced vibration and suppression device, which is applied in the direction of drill pipe, casing, fluid flow, etc., can solve the problems of not considering the interference effect of the wake of the riser group, complicated and harmful vortex-induced vibration, etc., and achieves simple structure and suppression. Vortex-induced vibration, the effect of improving fatigue life

Active Publication Date: 2015-07-22
CHINA UNIV OF PETROLEUM (EAST CHINA)
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  • Abstract
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Problems solved by technology

[0010] In particular, the current domestic and foreign research on vortex-induced vibration suppression devices for marine risers is mainly aimed at a single riser, without considering the wake interference between the riser groups. In fact, the wake interference makes the vortex-induced vibration become more complicated
Many vortex-induced vibration suppression devices have been invented in the past, but these suppression devices are not necessarily suitable in the case of wake interference, and may also be harmful

Method used

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  • Marine riser vortex-induced vibration abatement device
  • Marine riser vortex-induced vibration abatement device
  • Marine riser vortex-induced vibration abatement device

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Embodiment Construction

[0039] The preferred embodiments of the present invention are described below. It should be understood that the preferred embodiments described herein are only used to illustrate and explain the present invention, and are not used to limit the present invention.

[0040] A preferred embodiment of the present invention will be described below in conjunction with the drawings.

[0041] Such as Figure 1-Figure 3 As shown, in this embodiment, an ocean riser vortex-induced vibration suppression device is installed on the ocean riser 1, and includes a V-shaped front panel 2 and a V-shaped rear panel 3. The V-shaped front panel 2 is installed at The upper side of the ocean riser 1 facing the direction of the ocean current, the V-shaped rear end panel 3 is installed on the side of the ocean riser 1 opposite to the direction of the ocean current; the V-shaped front end panel 2 and the V-shaped rear end panel 3 The cross sections of are all V-shaped and are tangent to the surface of the ma...

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Abstract

The invention discloses a marine riser vortex-induced vibration abatement device. The marine riser vortex-induced vibration abatement device comprises a V-shaped front end panel and a V-shaped back end panel; the V-shaped front end panel is installed on the face, facing the ocean current flowing direction, on a marine riser, and the V-shaped back end panel is installed on the face, back to the ocean current flowing direction, on the marine riser; the cross section of the V-shaped front end panel and the cross section of the V-shaped back end panel are in V shapes, and the V-shaped front end panel and the V-shaped back end panel are in tangency with the surface of the marine riser. The marine riser vortex-induced vibration abatement device has the advantages that as a V-shaped wing plate is installed on the V-shaped front end panel, small-amplitude swing can be performed along with water flow, the resistance of the coming flow to the marine riser can be reduced while the coming flow is guided to be scattered, the vortex-induced vibration is effectively abated, and the fatigue life of the riser is prolonged.

Description

Technical field [0001] The invention relates to an ocean riser vortex-induced vibration suppression device, which belongs to the technical field of offshore oil drilling equipment. Background technique [0002] Due to production needs, the offshore oil industry is building production systems toward deeper waters. As the water depth increases, traditional fixed platforms can no longer meet the requirements of such deep-sea engineering. Instead, FPSOs, semi-submersible platforms, tension leg platforms, and Spar platforms are used instead. Among them, FPSO (Floating Production Storage and Offloading) is a floating production storage and offloading device, which can initially process and store crude oil, and is called "offshore oil factory"; semi-submersible drilling platform, also known as column stabilized drilling The platform is a mobile drilling platform with a small waterline surface where most of the floating bodies are submerged under the water. It evolved from a bottomed dr...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/10F15D1/00
CPCE21B17/10F15D1/0005F15D1/0085
Inventor 娄敏轩红超董文乙陈鹏
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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