Reduced J-tube riser pull force

Details Reduced J-tube riser pull force Reduced J-tube riser pull force

1991-05-09

1992-09-08

Lusignan, Michael

Hydraulic and earth engineering

Subterranean or submarine pipe or cable laying, retrieving,...

Submerging, raising, or manipulating line of pipe or cable...

4051681, 72 41, 166350, 166367, 427230, F16L 104

Patent

active

051452898

ABSTRACT:
A method is provided for reducing the force required to move a pipe through a J-tube attached to an offshore platform by coating the pipe with hydrophilic polymer and then moving the pipe through the J-tube, or by introducing a solution of hydrophilic polymer and water into the J-tube and then moving the pipe through the J-tube.

REFERENCES:
patent: 4039717 (1977-08-01), Titus
patent: 4098091 (1978-07-01), Desai et al.
patent: 4137623 (1979-02-01), Taylor
patent: 4523877 (1985-06-01), Finn et al.
patent: 4526813 (1985-07-01), Wa
patent: 4664978 (1987-05-01), Luis et al.
patent: 4755081 (1988-07-01), Esperza
patent: 5035922 (1991-07-01), Titus

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