US 12,129,729 B2
Closing unit system for a blowout preventer
Matthew Olson, Cypress, TX (US); and Stephen McGuire, Hockley, TX (US)
Assigned to SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US)
Filed by Schlumberger Technology Corporation, Sugar Land, TX (US)
Filed on Apr. 25, 2023, as Appl. No. 18/306,471.
Application 18/306,471 is a continuation of application No. 16/996,479, filed on Aug. 18, 2020, granted, now 11,708,738.
Prior Publication US 2023/0258049 A1, Aug. 17, 2023
This patent is subject to a terminal disclaimer.
Int. Cl. E21B 33/06 (2006.01); F04B 17/03 (2006.01); F04B 23/04 (2006.01)
CPC E21B 33/063 (2013.01) [F04B 17/03 (2013.01); F04B 23/04 (2013.01)] 19 Claims
OG exemplary drawing
 
1. A method of operating a closing unit system to control a blowout preventer (BOP) stack, the method comprising:
receiving, at one or more processors, an input indicative of an instruction to control an actuator associated with the BOP stack;
instructing, using the one or more processors, a first power source to provide power to a first pump system, wherein the first pump system comprises a first electric motor coupled to a first pump;
instructing, using the one or more processors, a second power source to provide power to a second pump system, wherein the second pump system comprises a second electric motor coupled to a second pump; and
pumping, using the first pump system and the second pump system, a fluid from a fluid reservoir to at least one valve that is fluidly coupled to the actuator associated with the BOP stack,
wherein the fluid reservoir stores the fluid at atmospheric pressure.