Rig floor equipment: Surface stack operations ///
Pride International, Inc. is marketing the Amethyst class rigs, Pride Rio de Janeiro and Pride Portland, for use on wells that are potential candidates for surface stack operations. These rigs were designed and built for the Petrobras 16-3/4-in. wellhead systems, using 18-5/8-in. riser; and, while this may reduce their appeal to the wider market, it makes them suitable for the possible surface stack arena. They can run their conventional subsea BOP stacks onto these wells, in as much as 5,500-ft water, saving modifications to convert a rig to use a surface stack system while benefiting from the slim-hole techniques.
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