Composite marine riser system
US4634314A · kind A · utility
Assignee
Inventor
Key dates
| Filing date | Jun 26, 1984 |
| Grant date | Jan 6, 1987 |
| Priority date | — |
| Expiry date | Jun 26, 2004 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L9/14
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
Tubular marine riser sections are formed by a wound or woven filament-resin matrix tubular body having a modulus of elasticity in tension of about 27,000,000 psi or greater utilizing carbon or boron for the filament material. The riser sections may be provided with end couplings secured to the tubular body for forming a riser system wherein the tensile strength or load bearing capacity of each section and its hydrostatic collapse resistance may be selectively determined by its position in the riser system. The riser sections may be provided with cylindrical collapse resisting ribs defining spaced buoyancy chambers filled with low density material contained by an outer shell formed of a glass or aramid fiber-resin matrix composite having a lower modulus of elasticity in tension than the primary load bearing tubular member. An inner abrasion and fluid impervious sleeve is disposed within the tubular body but is not bonded thereto. Multiple conduit riser sections may be utilized as anchoring members for a floating platform and the like.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.