Circuit functional test system and method
View Patent ↗Method and deadman test circuit for testing a functionality of a shearing blowout preventer. The circuit includes a solenoid valve configured to be electrically controlled and to receive a fluid under a first pressure; a sub plate mounted valve configured to be hydraulically controlled by the solenoid valve and to receive the fluid under a second pressure; and a selector valve fluidly connecting an output of the sub plate mounted valve to a shearing blowout preventer and to a device. The selector valve is configured to be operated by an operator.
1. A deadman test circuit for testing a functionality of a shearing blowout preventer, the deadman test circuit comprising: a solenoid valve configured to be electrically controlled and to receive a fluid under a first pressure; a sub plate mounted valve configured to be hydraulically controlled by the solenoid valve and to receive the fluid under a second pressure; and a selector valve fluidly connecting an output of the sub plate mounted valve to a shearing ram blowout preventer (BOP) and to a device, wherein the selector valve is configured to be operated by an operator.
2. The deadman test circuit of claim 1 , wherein the selector valve is electrically controlled by the operator or is controlled by a remote operated vehicle.
3. The deadman test circuit of claim 1 , wherein the selector valve is configured to be opened by default for the shearing ram BOP.
4. The deadman test circuit of claim 1 , further comprising: a MUX pod configured to host the solenoid valve, the sub plate mounted valve and the selector valve.
5. The deadman test circuit of claim 1 , wherein the selector valve is provided on a lower marine riser package that is configured to be provided at an end of a riser.
6. The deadman test circuit of claim 1 , wherein the selector valve is provided on a blowout preventer stack that is configured to be provided on a wellhead.
7. The deadman test circuit of claim 1 , further comprising: the device, wherein the device is one of a non-shearing blowout preventer, an accumulator, a cylinder having a rod configured to exit the cylinder and to indicate a pressure inside the cylinder, or a pressure sensor.
8. A blowout preventer assembly for sealing a well head, the assembly comprising: a lower marine riser package configured to be provided at an end of a riser and to be lowered undersea; a MUX pod attached to the lower marine riser package and configured to receive a fluid under a first pressure, the MUX pod including, a solenoid valve configured to be electrically controlled and to receive a fluid under a second pressure, and a sub plate mounted valve configured to be hydraulically controlled by the solenoid valve and to receive the fluid under the first pressure; and a selector valve fluidly connecting an output of the sub plate mounted valve to a shearing ram blowout preventer (BOP) and to a device, wherein the selector valve is configured to be operated by an operator.
9. The assembly of claim 8 , further comprising: a lower blowout preventer stack configured to be attached to the lower marine riser package and including at least the shearing ram BOP.
10. The assembly of claim 8 , wherein the selector valve is electrically controlled by the operator or is operated by a remote operated vehicle.
11. The assembly of claim 8 , wherein the selector valve is configured to be opened by default for the shearing ram BOP.
12. The assembly of claim 8 , wherein the selector valve is physically located on the lower marine riser package.
13. The assembly of claim 9 , wherein the selector valve is physically located on the lower blowout preventer stack.
14. The assembly of claim 8 , further comprising: the device, wherein the device is one of a non-shearing ram blowout preventer, an accumulator, a cylinder having a rod configured to exit the cylinder and to indicate a pressure inside the cylinder, or a pressure sensor.
15. A method for performing a deadman test on a shearing blowout preventer, the method comprising: activating a selector valve to disconnect a shearing blowout preventer from a supply of a fluid under pressure such that the shearing ram blowout preventer is inoperative; providing the fluid under pressure to a pressure activated device; generating information with regard to a pressure of the fluid under pressure inside the pressure activated device; and transmitting the information to a storage device or an operator.
16. The method of claim 15 , further comprising: configuring the selector valve to default to communicating with the shearing ram blowout preventer.
17. The method of claim 15 , further comprising: activating the selector valve to connect the shearing ram blowout preventer to the supply of fluid under pressure; and instructing the shearing ram blowout preventer to cut a tool present inside the shearing ram blowout preventer.