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Marine riser vortex-induced vibration suppression device

A vortex-induced vibration and suppression device technology, which is applied in the direction of drill pipe, casing, fluid flow, etc., can solve the problems of complex vortex-induced vibration, no consideration of the interference effect of the standpipe group wake, harmfulness, etc., and achieve simple structure and suppression Effect of vortex induced vibration and suppression of lateral vibration

Active Publication Date: 2015-07-01
CHINA UNIV OF PETROLEUM (EAST CHINA) +1
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Problems solved by technology

[0010] In particular, the current research on vortex-induced vibration suppression devices for marine risers at home and abroad is mainly aimed at a single riser, without considering the wake interference between riser groups. In fact, the wake interference makes 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 suppression device
  • Marine riser vortex-induced vibration suppression device
  • Marine riser vortex-induced vibration suppression device

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Embodiment Construction

[0037] Preferred embodiments of the present invention are described below, and it should be understood that the preferred embodiments described here are only used to illustrate and explain the present invention, and are not intended to limit the present invention.

[0038] A preferred embodiment of the present invention will be described below in conjunction with the accompanying drawings.

[0039] Such as Figure 1-Figure 3 As shown, in this embodiment, a marine riser vortex-induced vibration suppression device is installed on the marine riser 1, including a V-shaped front panel 2 and a tail fin type fairing 3, and the V-shaped front panel 2 is equivalent to a fish head. The V-shaped front panel 2 is installed on the side of the ocean riser 1 facing the direction of the ocean current, and the tail fin fairing 3 is installed on the side of the ocean riser 1 facing away from the direction of the ocean current; the V-shaped front panel 2 The cross section is V-shaped and tangen...

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Abstract

The invention discloses a marine riser vortex-induced vibration suppression device. The marine riser vortex-induced vibration suppression device is arranged on a marine riser. The marine riser vortex-induced vibration suppression device comprises a V-shaped front end panel and a tail fin type fairing. The V-shaped front panel board is arranged on the side, facing the marine current direction, of the marine riser. The tail fin type fairing is arranged on the side, back to the marine current, of the marine riser. The cross section of the V-shaped front end panel is V-shaped, and is tangent to the surface of the marine riser. The marine riser vortex-induced vibration suppression device has the advantages that by arranging V-shaped wing boards on the V-shaped front end panel, swinging in a small range can be achieved along with the current, incoming flow is led to be scattered, meanwhile resistance force on the marine riser due to the incoming flow can be lowered, the vortex-induced vibration can be effectively suppressed, lift force is greatly lowered, and the fatigue life of the riser is prolonged; the vortex-induced vibration suppression device has the advantages of being simple in structure, and convenient to process and install due to blocking.

Description

technical field [0001] The invention relates to a vortex-induced vibration suppressing device for a marine riser, 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 in deeper waters. With the increase of water depth, the traditional fixed platform can no longer meet the requirements of this deep sea engineering, replaced by FPSO, semi-submersible platform, tension leg platform and Spar platform. Among them, FPSO (Floating Production Storage and Offloading) is a floating production storage and offloading device, which can perform preliminary processing and storage of 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 water plane where most of the floating body is submerged under the water surface. It evolved from t...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): E21B17/10F15D1/00
CPCE21B17/10F15D1/003F16L1/123
Inventor 娄敏董文乙轩红超陈鹏
Owner CHINA UNIV OF PETROLEUM (EAST CHINA)
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