Protection device for marine riser connector

Abstract

The invention discloses a protection device for a marine riser connector. The protection device comprises an upper marine riser, a lower marine riser, a first flange, a second flange, an upper damping sleeve and a lower damping sleeve; the upper marine riser and the lower marine riser are connected together through the first flange and the second flange; screw holes are formed in the outer side faces of the first flange and the second flange; the upper damping sleeve comprises a third flange, an upper compensation pipe and an upper spacer bush; the lower damping sleeve comprises a fourth flange, a lower compensation pipe and a lower spacer bush; the upper spacer bush and the lower spacer bush are fixed to the outer side of the first flange and the outer side of the second flange respectively; and a plurality of round holes are formed in the surface of the upper compensation pipe and the surface of the lower compensation pipe. The protection device is simple in structure, convenient to manufacture, reliable in performance and low in cost, and can greatly reduce the impact of seawater on the marine riser connector.

Description

technical field [0001] The invention belongs to the field of water risers, and in particular relates to a protection device for a water riser joint. Background technique [0002] The riser is one of the components of the underwater equipment. It is a steel pipe connecting the subsea blowout preventer group and the floating offshore drilling device. It is mainly used to isolate seawater, guide drilling tools and casings, and form a channel for mud circulation. The integrity of the riser is crucial to the safety of offshore operations. When the riser is working in the ocean, it will continue to be subjected to combined loads such as waves and currents, and the riser (especially the joint) will produce a certain range of deformation and vibration , when this force is greater than the bearing range of the riser, the riser will be fatigued and damaged, causing safety accidents, and will pollute the marine environment, causing irreparable impacts. The existing shock suppression de...

AI Technical Summary

Problems solved by technology

The integrity of the riser is crucial to the safety of offshore operations. When the riser is working in the ocean, it will continue to be subjected to combined loads such as waves and currents, and the riser (especially the joint) will produce a certain range of deformation and vibration , when this force is greater than the bearing range of the riser, the riser will be fatigued and damaged, causing safety accidents, and will pollute the marine environment, causing irreparable impacts. The existing shock suppression device has high cost, complicated manufacturing process, and heavy weight Large, cumbersome installation and inconvenient on-site operation, need to be improved

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