Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...
Patent
1993-11-18
1995-06-06
Taylor, Dennis L.
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
Submerging, raising, or manipulating line of pipe or cable...
405158, 405166, B63B 3504, F16L 100
Patent
active
054216753
ABSTRACT:
An apparatus for near vertical laying of pipeline offshore. A support frame and movable deck on a lay vessel support a tower at the desired angle for pipe laying. The tower has a travel block that is movable between open and closed positions for receiving a pipe section and supporting the weight of the pipe or pipeline. The travel block is adapted for movement along the length of the tower for raising or lowering the pipe and pipeline. A pedestal that is movable between open and closed positions for receiving a pipe section and supporting the weight of the pipeline is positioned near the bottom of the tower and adapted to transfer the weight of the pipeline from the travel block to the pedestal without the need to open the travel block. A strongback with adjustable clamps is used to grasp a pipe section from a ready rack and transfer the pipe section into the tower for addition of the pipe section to the pipeline. The strongback is guided into and up the tower by rails. A stinger extends down from the lower end of the tower and is provided with clamps to grip the pipeline during operations. The main portion of the stinger may be pivoted up adjacent the lay vessel when pipe laying operations are not in progress.
REFERENCES:
patent: 1220189 (1917-03-01), Chapman
patent: 3581506 (1971-06-01), Howard
patent: 3585806 (1971-06-01), Lawrence
patent: 3680322 (1972-08-01), Nolan et al.
patent: 3860122 (1975-01-01), Cernosek
patent: 4068490 (1978-01-01), Jegousse
patent: 4486123 (1984-12-01), Koch et al.
Brown Robert W.
Legleux Michael J.
Wilkins Jesse R.
Edwards Robert J.
LaHaye D. Neil
McDermott International Inc.
Ricci John A.
Taylor Dennis L.
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