Diverless installation of riser clamps onto fixed or compliant offshore platforms
US5092711A · kind A · utility
22Cited by
5References
1Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Jul 29, 1988 |
| Grant date | Mar 3, 1992 |
| Priority date | — |
| Expiry date | Jul 29, 2008 |
Classification
- Technology area (CPC E)Fixed Constructions
- CPC primaryE21B43/0107
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Riser clamps are installed onto fixed or compliant offshore platforms by a diverless technique. Each riser clamp is rigidly or hingedly attached to a heavy tapered wedge. Mating tapered receptacles are built into the platform, preferably at various levels along a corner leg. Only one lift line is utilized which may be either a drill string or wire rope, and one remotely operated vehicle (ROV) for observation, to lower and stab each riser clamp into one of the tapered receptacles on the platform.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.