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US 4,400,110 AGranted
Flexible riser underwater buoy
AssigneeStandard Oil Company (Indiana)
InventorsPierre A. Beynet, Sam A. Billington
Life of this patent
Estimating the term…
Abstract
This invention relates to a floating production system for offshore development of oil and gas wells which employs an underwater buoy to decrease tension on flexible riser pipes used to connect a subsea pipeline to the floating vessel. The underwater buoy utilizes a cradle assembly having a drag balancing tail assembly to counteract the twisting moment applied to the cradle by current drag forces.
Claims6
An underwater structure for supporting a flexible riser extending from the bottom of the body of water to a floating vessel comprising:
- (a) a cradle assembly having:
- (i) a cradle having a receiving surface over which said riser may extend;
- (ii) a buoy attached to said cradle
- (b) a drag balancing tail assembly attached to said cradle assembly to counteract the twisting moment applied to said cradle assembly by current drag forces.
1 more element
Dependencies are inferred from the claim text.