GULF OF MEXICO DECOMMISSIONING—4: Explosives offer another option

Mark J. Kaiser, Allan G. PulsipherThe cost of severing platforms with explosives during the decommissioning of Gulf of Mexico structures is time-invariant or nearly time-invariant. Also the fixed cost of explosive severance dominates the variable cost, indicating the variable cost is relatively minor for most jobs.This fourth in a five-part series of decommissioning summarizes the historic use of explosives, current regulatory structure, and fundamentals of the technology.The first part of the series was in OGJ, Sept. 27, p. 41.HistoryThe industry probably first used explosives in decommissioning and salvage operations in the mid-to-late 1950s to sever well conductors. During the early 19...

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