New technologies offer decommissioning alternatives

Alternative heavy lift vessels, in various stages of completions, may help in the removal of large platforms. Click here to enlarge imageTwachtman Snyder & Byrd Inc. (TSB), Houston, compiled Fig. 1 showing a timetable for new vessel availability. The figure is part of TSB's November 2000 study, "State of the Art of Removing Large Platforms Located in Deep Water," prepared for the US Minerals Management Service.The study's conclusion says that these designs may someday prove to be safer, more cost-effective for both topsides and jacket, although removal of deepwater jackets remains problematic.The new heavy-lift technologies include the Versatruss scheme, GM heavy lift, Pieter Sch...

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