Internal pipeline plug for deep subsea operations

Details Internal pipeline plug for deep subsea operations Internal pipeline plug for deep subsea operations

1981-06-30

1983-06-28

Marcus, Stephen

Pipes and tubular conduits

With closures and plugs

Inflation stem type

405170, F16L 5510, F16L 104

Patent

active

043900437

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 pipelay vessel, and which is capable of sealing, remotely releasing and then being pumped out of the line to a terminus.

REFERENCES:
patent: 3693408 (1972-09-01), Hyde
patent: 3943982 (1976-03-01), Lecordier
patent: 4077435 (1978-03-01), Van Scoy
patent: 4114653 (1978-09-01), Carlin
patent: 4262702 (1981-04-01), Streich
patent: 4360290 (1982-11-01), Ward

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