Safety integrity level rated controls for all-electric bop
AssigneeHydril USA Distribution LLC
InventorsJohn Holmes, Amine Abou-Assaad
Life of this patent
Estimating the term…
Abstract
A safety integrity level rated control system includes a surface control system and a subsea control system. The surface control system includes one or more remote display panels, one or more buttons operatively connected to each of the remote display panels, two main controllers connected to the remote display panels, two junction boxes, each junction box connected to one of the two main controllers, and a surface intervention system controller connected to the one or more buttons via a wiring bus. The subsea control system is connected to the surface control system by one or more umbilicals extending from the two junction boxes.
Claims20
A safety integrity level rated control system, comprising:
- a surface control system, comprising:
- one or more remote display panels;
- one or more buttons operatively connected to each of the one or more remote display panels;
- two main controllers connected to the one or more remote display panels;
- two junction boxes, each junction box connected to one of the two main controllers;
- and
- a surface intervention system controller connected to the one or more buttons via a wiring bus;
- and
- a subsea control system connected to the surface control system by one or more umbilicals extending from the two junction boxes.
A method, comprising:
- coupling a safety integrity level rated control system to an all-electric blowout preventer stack;
- detecting, via a remote display panel, a failure in operation of a component of the all-electric blowout preventer stack;
- pushing a button connected to the remote display panel,
- wherein pushing the button generates a command;
- sending the command from a surface intervention system controller to a subsea control system;
- receiving the command at a remote terminal unit coupled to a first section of the all-electric blowout preventer stack;
- transmitting the command from the remote terminal unit to a control pod coupled to a second section of the all-electric blowout preventer stack;
- transmitting the command to a safety integrity level network switch within the control pod;
- transmitting the command from the safety integrity level network switch to a safety controller via black channel communications;
- and
- actuating the component based, at least in part, on the command.
A method, comprising:
- coupling a safety integrity level rated control system to an all-electric blowout preventer stack,
- wherein the safety integrity level rated control system comprises a surface control system and a subsea control system;
- creating a communication packet addressed to a component of the all-electric blowout preventer stack;
- transmitting the communication packet through the surface control system and the subsea control system to the component;
- detecting a failure of the component to actuate according to the communication packet;
- transmitting a command to a remote terminal unit coupled to a first section of the all-electric blowout preventer stack;
- transmitting the command from the remote terminal unit to a safety integrity level network switch within a control pod coupled to a second section of the all-electric blowout preventer stack;
- transmitting the command from the safety integrity level network switch to a safety controller via black channel communications;
- and
- actuating the component based, at least in part, on the command.
Dependencies are inferred from the claim text.