Spoolable reinforced thermoplastic pipe for subsea and buried applications
US10935168B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 21, 2018 |
| Grant date | Mar 2, 2021 |
| Priority date | — |
| Expiry date | Nov 21, 2038 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L11/16
- WIPO fieldMechanical elements
- WIPO sectorMechanical engineering
Abstract
A reinforced thermoplastic pipe having a polymeric barrier layer formed about a longitudinal axis; at least one first non-metallic reinforcement layer configured to carry an internal pressure load surrounding the polymeric barrier layer; at least one second non-metallic reinforcement layer configured to carry an axial load surrounding the at least one first reinforcement layer; and a polymeric cover layer surrounding the at least one second reinforcement layer. At least one of the first or second reinforcement layers is braided. In some embodiments, the lay angles of the first and second reinforcement layers are selected to reduce the axial compression force in the pipe in a constrained application. In another embodiment, an interior helical metallic layer around which the polymeric barrier layer is formed, the interior layer being an interlocked metallic carcass, a flat helically wound strip or a helically wound wire.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.