coupling system, and method for separating a lower marine riser assembly from an eruption preventer coupled to an underwater wellhead.

摘要

A coupling system includes a lower marine riser assembly having a connector at one bottom end and at least one eruption preventer pressure control element coupled to a wellhead and having a connector at an upper end. Explosively fragile fasteners are used to couple the connector on the bottom marine riser assembly to the connector on at least one burst control pressure control element. One method for separating a lower marine riser assembly from an eruption preventer coupled to an underwater wellhead includes closing at least one pressure control element on the eruption preventer. At least one explosively fragile fastener coupling the eruption preventer to the bottom marine riser assembly is detonated. the bottom marine riser assembly is then elevated from the eruption preventer.