CAM fluid transfer system
US5794700A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jan 27, 1997 |
| Grant date | Aug 18, 1998 |
| Priority date | — |
| Expiry date | Jan 27, 2017 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B17/015
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
An offshore fluid transfer system (10) is provided, of the type that includes a riser (32) having an upper end (34) connected through a universal joint (36) to a turret (22) on a vessel and having a lower end (36) anchored by catenary chains (40), and that also includes hoses (70, 71) extending from a base (50, 58) on the seafloor to the turret on the vessel, which avoids the need for a complicated hose structure to pass fluid across the universal joint. A fluid coupling (73) near the bottom of the turret, which is widely spaced from the universal joint, connects to a hose that extends from the fluid coupling in a sinuous path down to the seafloor base. The long length of hose, enables it to bend when the vessel drifts, to avoid excessive hose tension or riser contact during such vessel drift. A riser connector (102) can be operated to disconnect the riser from the turret so the riser can sink. The fluid coupling can include a fluid connector (100) which can separately disconnect the hose from the turret. A ring-shaped holder (80) connected to the hose lies around the axis of the turret and around the riser.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.