A riser tension device

A riser tensioning system for a floating platform comprises hydro/pneumatic operated piston and cylinder assemblies 17 which are connected between a working deck 11 and a frame 31 for absorbing motion and heave of a riser 15. The frame 31 extends and is connected circumferentially around the riser 1...

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Bibliographic Details
Main Authors CHARLES EDWARD JENNINGS, JOSEPH W PALLINI, JEFFREY KIRK MCCARTY
Format Patent
LanguageEnglish
Published 13.07.2005
Edition7
Subjects
EARTH DRILLING
EARTH DRILLING, e.g. DEEP DRILLING
EMBANKMENTS
EXCAVATIONS
FIXED CONSTRUCTIONS
FOUNDATIONS
HYDRAULIC ENGINEERING
MINING
OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
SOIL SHIFTING
UNDERGROUND OR UNDERWATER STRUCTURES
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Summary:A riser tensioning system for a floating platform comprises hydro/pneumatic operated piston and cylinder assemblies 17 which are connected between a working deck 11 and a frame 31 for absorbing motion and heave of a riser 15. The frame 31 extends and is connected circumferentially around the riser 15, so that the frame 31 moves axially with the riser 15. Each hydro/pneumatic operated piston and cylinder assembly 17 comprises a chamber 19 which is pressurised with a fluid, so that the fluid dampens the movement of the riser 15. In one embodiment, each hydro/pneumatic operated piston and cylinder assembly 17 is protected by a shroud 35, and the shroud 35 moves in unison with the hydro/pneumatic operated piston and cylinder assembly 17.
Bibliography:Application Number: GB20050000112