Abstract: An underwater robotic system includes a frame for deployment in a body of water and having a control panel with multiple controls. A first actuator on the frame selectively actuates a control from a front side of the panel. A second actuator on the frame selectively actuates a control from a back side of the panel. One or more controls on the panel is configured to regulate distribution of a fluid. The frame is configured to couple to a blowout preventer. A method for robotic fluid distribution in an underwater environment.

Abstract: A coupling system includes a lower marine riser package having a connector at a bottom end and a blowout preventer having a connector at an upper end. Explosively frangible fasteners with explosively frangible nuts sealed off from the external environment are used to couple the connector on the lower marine riser package to the connector on the blowout preventer. A method for separating a lower marine riser package from a blowout preventer includes electronically triggering the detonation of a plurality of explosively frangible fasteners coupling the blowout preventer to the lower marine riser package.

Abstract: A choke and kill system, and a method of adapting a low pressure drilling rig for use in a high pressure application are described. The system has a low pressure stack and a high pressure blowout preventer stack fluidly connected to the low pressure stack. A choke is fluidly connected to a low pressure choke line of the low pressure stack and is connected to a high pressure choke line of the high pressure blowout preventer stack. The choke is adapted to reduce the pressure from the high pressure choke line to the low pressure choke line.