Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...
Patent
1989-04-17
1989-10-31
Corbin, David H.
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
Submerging, raising, or manipulating line of pipe or cable...
166341, E21B 4301, F16L 104
Patent
active
048773565
ABSTRACT:
A method and apparatus for stabbing a flowline into a guide tube near the waterbottom and subsequently hinging over the flowline to a horizontal position. The connection operation is facilitated by a vertically oriented guide tube having along the inner wall thereof a pair of parallel slots which provide at the lower ends thereof pivot supports on which a pair of pivots which are mounted near the lower end of the flowline land during the stab in procedure. Deflectors are provided for deflecting a lower portion of the flowline while the pivots are lowered through the slots so as to induce the flowline to obtain a curved shape into a predetermined direction before the pivots land onto the pivot supports.
REFERENCES:
patent: 4102146 (1978-07-01), Dietrich
patent: 4277202 (1981-07-01), Archambaud et al.
patent: 4676696 (1987-06-01), Laursen
Corbin David H.
Shell Oil Company
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