Method and apparatus for removing abandoned offshore fixed platf

Details Method and apparatus for removing abandoned offshore fixed platf Method and apparatus for removing abandoned offshore fixed platf

1998-10-22

2000-10-17

Nelson, Peter A.

Ammunition and explosives

Blasting

Detonation wave modifying

102341, 102399, 102312, 166365, F42D 300, E21B 712

Patent

active

061315176

ABSTRACT:
A method and apparatus for removing abandoned or obsolete fixed platforms in a marine environment is provided. The apparatus includes a frame carrying an explosive charge. The frame includes a linear and a curved section which are adjustable moved relative to one another for fitting the explosive charge member to the inside bore of a vertical leg section of the rig. A shaped charge arrangement focuses an explosive charge at a desired location on the rig leg so that when the explosive charge detonates, the rig is cut with minimal invasion of the surrounding environment.

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patent: 4528910 (1985-07-01), Blanc et al.
patent: 4787315 (1988-11-01), Kenny
patent: 5177321 (1993-01-01), Kenny
patent: 5477785 (1995-12-01), Dieman, Jr. et al.
patent: 5524546 (1996-06-01), Rozner et al.
patent: 5777257 (1998-07-01), Kenny

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