Hydraulic and earth engineering – Subterranean or submarine pipe or cable laying – retrieving,... – Submerging – raising – or manipulating line of pipe or cable...
Patent
1993-04-29
1995-06-20
Taylor, Dennis L.
Hydraulic and earth engineering
Subterranean or submarine pipe or cable laying, retrieving,...
Submerging, raising, or manipulating line of pipe or cable...
405171, 405172, F16L 126, F16L 116
Patent
active
054255996
ABSTRACT:
A method for repairing a damaged subsea pipeline setting on the seabed includes the lowering of pipe support frames to the seabed and positioning the pipe support frames beneath the subsea pipeline on each side of the damaged pipeline section. The pipe support frames are expanded to elevate the damaged pipeline section. A pair of pipe attachment and receiving (PAR) assemblies are lowered to the seabed and positioned astride the pipeline on each side of the damaged section of the pipeline. The pipeline is gripped by the PAR assemblies. Cutting modules are lowered to the seabed and attached to each of the PAR assemblies. The pipeline is cut at each location with the cutting modules. The cutting modules are detached from the PAR assembly and a pair of docking modules are lowered to the seabed. One docking module is attached to each of the PAR assemblies. A telescoping spool section is lowered to the seabed and docked onto the docking modules. The telescoping spool section is expanded until the spool section engages the pipeline ends. The spool section is connected to the pipeline ends.
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Hall N. Victor
Rash Peter
Ricci John A.
Sonsub International Management Inc.
Taylor Dennis L.
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