Internal pipeline plug for deep subsea pipe-to-pipe pull-in connection operations
US4360290A · kind A · utility
24Cited by
7References
12Claims
0Family size
Assignee
Inventor
Key dates
| Filing date | Dec 17, 1980 |
| Grant date | Nov 23, 1982 |
| Priority date | — |
| Expiry date | Dec 17, 2000 |
Classification
- Technology area (CPC F)Mechanical Engineering; Lighting; Heating
- CPC primaryF16L55/136
- WIPO fieldCivil engineering
- WIPO sectorOther fields
Abstract
Pressure-tight pipeline plugs are used in subsea connection operations to achieve a lightweight pipe condition which facilitates alignment by easing handling problems. An internal plug is provided for this purpose which is particularly useful for connection operations using a pipe-to-pipe pull-in technique and is capable of sealing, remotely releasing and then being pumped through the line to a terminus.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.