Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...
Reexamination Certificate
2007-01-29
2009-12-08
Kreck, John (Department: 3672)
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
Submerging, raising, or manipulating line of pipe or cable...
C405S173000
Reexamination Certificate
active
07628568
ABSTRACT:
A method for installing a subsea flowline and riser assembly on a sea floor includes providing a flowline having an axis and an end connected to a hinge-over joint, and a riser having an axis and an end connected to the joint such that the axes of the riser and flowline extend substantially parallel. An end of the flowline opposite the joint is lowered to the sea floor. The end of the flowline connected to the joint is lowered to the sea floor. The joint is connected to a foundation that is installed in the sea floor. The riser is rotated about the hinge-over joint such that the riser axis is substantially perpendicular to the flowline axis. A subsea jumper is connected between an opening formed in the flowline and an opening formed in the riser so that the riser is in fluid communication with the flowline.
REFERENCES:
patent: 4277202 (1981-07-01), Archambaud et al.
patent: 4906137 (1990-03-01), Maloberti
patent: 5320175 (1994-06-01), Ritter
patent: 6854930 (2005-02-01), Pionetti
Chevron U.S.A. Inc.
Gallo Nicholas F.
Kreck John
Northcutt Christopher D.
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