Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...
Patent
1988-06-13
1990-03-06
Corbin, David H.
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
Submerging, raising, or manipulating line of pipe or cable...
405191, F16L 104, B63C 1152
Patent
active
049061364
ABSTRACT:
The invention relates to a method for connecting a conduit (5) to a subsea structure (1), which comprises laying the conduit on the sea floor, with a conduit end (8) in the area close to the subsea structure. The method is characterized in that the conduit end is gripped by a ROV (9) with a gripping manipulator (10), that ROV (9) with the gripped conduit end (8) is advanced to the subsea structure (1), that the conduit end is introduced like a piston in a suitable receiving member (2) in the subsea structure, and that a negative pressure is provided in the receiving member so that conduit end (8) is sucked into the receiving member (2). The invention also relates to a device for use in connecting a conduit end (8) to a subsea structure (1). Conduit end (8) is advanced from the side of subsea structure (1) into a receiving member (2) of the subsea structure and is secured there. Receiving member (2) and conduit end (8) are mutually adapted so that conduit end (8) can move like a piston in receiving member (2). The receiving member has a connecting sleeve which is accessible from outside for connection to a source of negative pressure.
REFERENCES:
patent: 3795115 (1974-03-01), Bergquist et al.
patent: 4041719 (1977-08-01), Baugh
patent: 4086778 (1978-05-01), Latham et al.
patent: 4601608 (1986-07-01), Ahlstone
Norbom Erik
Sletten Rune
Corbin David H.
Kvaerner Subsea Contracting A/S
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