Riser pipe system for collecting and raising petroleum produced from an underwater deposit
US4332509A · kind A · utility
37Cited by
9References
6Claims
0Family size
Assignee
Inventors
Key dates
| Filing date | Jun 10, 1980 |
| Grant date | Jun 1, 1982 |
| Priority date | — |
| Expiry date | Jun 10, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L9/18
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
A piping or conduit system in which conduits to receive flow lines or flexible pipe can be connected end to end to form a riser assembly, and thereafter, the flow lines can be inserted through individual conduits of the assembly. The section contains a low density foam to impart essentially zero negative and positive buoyancy, and the foam is filled into areas surrounding the individual conduits of the sections. Suitable reinforcing and tension stress resisting elements are provided so that each section is essentially self sustaining.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.