US 11,852,133 B2
Well service pump power system and methods
Tom Gable, Houston, TX (US); Garrett Smith, Houston, TX (US); Shelton Burnett, Houston, TX (US); and John Fischer, Houston, TX (US)
Assigned to AMERIFORGE GROUP INC., Houston, TX (US)
Filed by AMERIFORGE GROUP INC., Houston, TX (US)
Filed on Apr. 26, 2019, as Appl. No. 16/396,002.
Claims priority of provisional application 62/664,078, filed on Apr. 27, 2018.
Prior Publication US 2019/0331117 A1, Oct. 31, 2019
Int. Cl. F04B 49/20 (2006.01); E21B 43/12 (2006.01); F04B 17/06 (2006.01); F04B 23/06 (2006.01); F04B 9/10 (2006.01); F04B 17/03 (2006.01); F04B 47/04 (2006.01); E21B 44/00 (2006.01)
CPC F04B 49/20 (2013.01) [E21B 43/129 (2013.01); F04B 9/10 (2013.01); F04B 17/03 (2013.01); F04B 17/06 (2013.01); F04B 23/06 (2013.01); F04B 47/04 (2013.01); E21B 44/005 (2013.01)] 14 Claims
OG exemplary drawing
 
1. A system for powering a pump, the system comprising:
a hydraulic pump;
an electric motor configured to power the hydraulic pump;
a variable frequency drive (VFD) configured to be coupled to the electric motor to control an amplitude of power provided by the electric motor to the hydraulic pump; and
a control system configured to control the VFD between:
a first state, wherein the hydraulic pump is powered, in a ramp-up manner, by the electric motor, and the amplitude of power provided by the electric motor to the hydraulic pump is controlled by the VFD until the pump achieves an operating speed; and
a second state, wherein the hydraulic pump is powered, at the operating speed, by the electric motor, and the amplitude of power provided by the electric motor to the hydraulic pump is not controlled by the VFD;
wherein the second state is maintained until the hydraulic pump is powered off.