Diverless installation of riser clamps onto fixed or compliant o

Details Diverless installation of riser clamps onto fixed or compliant o Diverless installation of riser clamps onto fixed or compliant o

1988-07-29

1992-03-03

Reese, Randolph A.

Hydraulic and earth engineering

Subterranean or submarine pipe or cable laying, retrieving,...

Submerging, raising, or manipulating line of pipe or cable...

405191, 4051951, 166341, 166345, 166359, 2483161, E02B 1700

Patent

active

050927116

ABSTRACT:
Riser clamps are installed onto fixed or compliant offshore platforms by a diverless technique. Each riser clamp is rigidly or hingedly attached to a heavy tapered wedge. Mating tapered receptacles are built into the platform, preferably at various levels along a corner leg. Only one lift line is utilized which may be either a drill string or wire rope, and one remotely operated vehicle (ROV) for observation, to lower and stab each riser clamp into one of the tapered receptacles on the platform.

REFERENCES:
patent: 3739592 (1973-06-01), Plake
patent: 4116015 (1978-09-01), Duncan
patent: 4386659 (1983-06-01), Shotbolt
patent: 4423982 (1984-01-01), Zaremba
patent: 4661017 (1987-04-01), Wood et al.

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