Method and apparatus for removal of submerged offshore objects

作者: Richard A. Anderson , Richard H. Barron , Franklin C. Wade

DOI:

关键词: NozzleRaising (metalworking)Geotechnical engineeringLiquid gasSeabedSubmarine pipelineEmbedmentTension (physics)PileEngineering

摘要: A method for removal of large metal objects such as offshore platforms that may be embedded in or substantially immobile and lying on the seabed. The environment should dislodged from at least a portion supporting pile below mud line. liquified gas is injected into contact with to embrittle pile. Upon embrittlement, fragmented. Thereafter, removed cannister use above has body shaped conform object fragmented contains sprayed nozzles by pressurized chill upon embrittlement. support positioned raising lowering within fragmentation tool insertion other embedment sea having plurality anvils housed open ended elongated tubes, propulsion means generating pressure, frangible connection ruptures when sufficient pressure generated propel strike embrittled area cause fragmentation. An apparatus applying tension before consists one more hydraulic rams connected between concentric jacket.

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