US 11,834,940 B1
System and method of controlling single or dual pump operation
Madhur Kohli, Houston, TX (US); and Timothy Holiman Hunter, Duncan, OK (US)
Assigned to Halliburton Energy Services, Inc., Houston, TX (US)
Filed by Halliburton Energy Services, Inc., Houston, TX (US)
Filed on Feb. 24, 2023, as Appl. No. 18/113,799.
Int. Cl. E21B 43/26 (2006.01); F04C 11/00 (2006.01); F04C 28/02 (2006.01); F04C 29/00 (2006.01); E21B 7/18 (2006.01); E21C 25/60 (2006.01); E21B 21/08 (2006.01); F03B 13/02 (2006.01); E21B 43/27 (2006.01); E21B 7/06 (2006.01); E21B 7/02 (2006.01)
CPC E21B 43/2605 (2020.05) [E21B 7/065 (2013.01); E21B 7/18 (2013.01); E21B 21/08 (2013.01); E21B 43/2607 (2020.05); E21B 43/27 (2020.05); E21C 25/60 (2013.01); F03B 13/02 (2013.01); F04C 11/003 (2013.01); F04C 28/02 (2013.01); F04C 29/0085 (2013.01); E21B 7/02 (2013.01)] 21 Claims
OG exemplary drawing
 
1. A system of a dual-pumping unit, comprising:
a prime mover;
a first pump directly coupled to the prime mover via a decoupler mechanism, wherein the prime mover is a variable speed electric motor;
one or more sensors configured to identify a position of the decoupler mechanism;
a unit controller communicatively coupled to the prime mover, the decoupler mechanism, and the one or more sensors, the unit controller comprising a processor and a non-transitory memory and configured to:
control a pump rate of the dual-pumping unit in a dual pump mode via control of the prime mover;
reduce the pumping rate to zero by slowing a rotational motion of a drive shaft via the prime mover to a stop during a first transitional period;
activate a coupling actuator of the decoupler mechanism to move a dynamic element from a coupled configuration to a decoupled configuration;
receive feedback from the one or more sensors of the dynamic element in a decoupled position; and
recalibrate the unit controller from the dual pump mode to a single pump mode in response to the decoupled position of the dynamic element.