US 11,739,602 B2
Electric driven hydraulic fracking operation
John Fischer, Hempstead, TX (US); David Kubricht, Cypress, TX (US); Richard Cheatham, Houston, TX (US); Jeffrey Pollack, Joliet, IL (US); Chad Lawman, Joliet, IL (US); David Todd, Houston, TX (US); Tyler Nolen, Houston, TX (US); and John J. Crosetto, Oak Forest, IL (US)
Assigned to National Service Alliance—Houston LLC, Houston, TX (US)
Filed by National Service Alliance-Houston LLC, Houston, TX (US)
Filed on Jan. 23, 2023, as Appl. No. 18/100,299.
Application 18/100,299 is a continuation of application No. 17/869,239, filed on Jul. 20, 2022, granted, now 11,560,764.
Application 17/869,239 is a continuation of application No. 17/670,885, filed on Feb. 14, 2022, granted, now 11,434,709, issued on Sep. 6, 2022.
Application 17/670,885 is a continuation of application No. 17/498,667, filed on Oct. 11, 2021, granted, now 11,274,512, issued on Mar. 15, 2022.
Application 17/498,667 is a continuation of application No. 17/239,877, filed on Apr. 26, 2021, granted, now 11,142,972, issued on Oct. 12, 2021.
Application 17/239,877 is a continuation of application No. 16/790,897, filed on Feb. 14, 2020, granted, now 10,988,998, issued on Apr. 27, 2021.
Claims priority of provisional application 62/805,521, filed on Feb. 14, 2019.
Prior Publication US 2023/0160271 A1, May 25, 2023
Int. Cl. E21B 43/267 (2006.01); E21B 21/08 (2006.01); H02J 13/00 (2006.01); E21B 43/26 (2006.01); E21B 4/04 (2006.01); E21B 7/02 (2006.01); F04B 17/03 (2006.01); F04B 17/06 (2006.01); F04D 13/06 (2006.01); H02B 1/52 (2006.01); H02B 5/00 (2006.01); H02K 7/18 (2006.01); H02P 27/04 (2016.01); E21B 4/02 (2006.01); H02K 9/00 (2006.01); H05K 5/02 (2006.01); H05K 7/20 (2006.01)
CPC E21B 21/08 (2013.01) [E21B 4/04 (2013.01); E21B 7/022 (2013.01); E21B 43/2605 (2020.05); E21B 43/2607 (2020.05); F04B 17/03 (2013.01); F04B 17/06 (2013.01); F04D 13/0686 (2013.01); H02B 1/52 (2013.01); H02B 5/00 (2013.01); H02J 13/00036 (2020.01); H02K 7/18 (2013.01); H02P 27/04 (2013.01); E21B 4/02 (2013.01); F05B 2220/706 (2013.01); F05B 2240/941 (2013.01); H02K 9/00 (2013.01); H05K 5/0213 (2013.01); H05K 7/20918 (2013.01)] 20 Claims
OG exemplary drawing
 
1. A pump configuration for a fracking operation, the pump configuration comprising:
a cabin defining a cabin interior;
a first variable frequency drive (VFD) positioned in the cabin interior to provide electric power at a first voltage level;
a second variable frequency drive (VFD) positioned in the cabin interior to provide electric power at a second voltage level less than the first voltage level;
an electric motor coupled to the first VFD to receive electric power from the first VFD; and
a hydraulic pump coupled to the electric motor to continuously pump fracking media in response to operation of the electric motor,
wherein:
the first VFD includes a power cell assembly and a transformer assembly,
the cabin includes a maintenance door to permit personnel access to the power cell assembly and the transformer assembly from outside the cabin, and
the cabin includes a closet door to permit personnel access to the second VFD from outside the cabin.