Blowout preventer locking system and method
AssigneeSchlumberger Technology Corporation
InventorsJean-Luc Pujol, Gerard Tarbouriech
Life of this patent
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Abstract
A system includes a blowout preventer (BOP) having a ram assembly having first and second pistons. The first piston is configured to drive a first ram into a cavity of the BOP and the second piston is configured to drive a second ram into the cavity. The system also includes a motor assembly having first and second motors. The first motor is configured to cause an extension of a first lock to constrain the first piston and the second motor is configured to cause an extension of a second lock to constrain the second piston. The first and second motors are fluidly coupled to each other in a series arrangement via a connector conduit. The connector conduit is configured to flow a motor fluid sequentially through the first and second motors.
Claims14
A system, comprising:
- a blowout preventer (BOP) having a ram assembly comprising first and second pistons, wherein the first piston is configured to drive a first ram into a cavity of the BOP, and the second piston is configured to drive a second ram into the cavity;
- and
- a motor assembly comprising:
- first and second motors;
- and a motor fluid circuit, wherein the first motor is configured to cause an extension of a first lock to constrain the first piston, and the second motor is configured to cause an extension of a second lock to constrain the second piston;
- wherein the motor fluid circuit comprises:
- a connector conduit,
- wherein the first and second motors are fluidly coupled to each other in a series arrangement via the connector conduit, and the connector conduit is configured to flow a motor fluid sequentially through the first and second motors.
A method comprising:
- monitoring a well condition to obtain feedback for controlling a blowout preventer (BOP), the BOP having a ram assembly comprising first and second pistons, wherein the first piston is configured to drive a first ram into a cavity of the BOP, and the second piston is configured to drive a second ram into the cavity;
- determining a current state of the BOP;
- and
- determining whether to use a motor assembly associated with the BOP to change the current state of the BOP based on the feedback, the motor assembly comprising:
- first and second motors fluidly coupled to each other in a series arrangement via a connector conduit, the connector conduit being configured to flow a motor fluid sequentially through the first and second motors.
A non-transitory computer readable medium having stored thereon computer program code which, when run on a computer, causes the computer to perform a method comprising:
- monitoring a well condition to obtain feedback for controlling a blowout preventer (BOP), the BOP having a ram assembly comprising first and second pistons, wherein the first piston is configured to drive a first ram into a cavity of the BOP, and the second piston is configured to drive a second ram into the cavity;
- determining a current position of the BOP;
- and
- determining whether to use a motor assembly associated with the BOP to change the current position of the BOP based on the feedback, the motor assembly comprising:
- first and second motors fluidly coupled to each other in a series arrangement via a connector conduit, the connector conduit being configured to flow a motor fluid sequentially through the first and second motors.
Dependencies are inferred from the claim text.