IP Library › Granted Patent US 12,209,490
Granted Patent B2
US 12,209,490 · App. 18/484,303 · Granted Jan 28, 2025

System for pumping hydraulic fracturing fluid using electric pumps

Inventors: Joel N. Broussard (Lafayette, LA); Jeff McPherson (Spring, TX); Robert Kurtz (Fairmont, WV)
Assignee: U.S. Well Services, LLC
E21B43/2607E21B43/267F01D15/08F01D15/10F02C3/22F04B17/03F04B19/22F04B49/20H02P23/00F05D2220/32
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Quick Facts
Patent No.
US 12,209,490
App. No.
18/484,303
Granted
Jan 28, 2025
Kind
B2
Abstract

A system for hydraulically fracturing an underground formation in an oil or gas well to extract oil or gas from the formation, the oil or gas well having a wellbore that permits passage of fluid from the wellbore into the formation. The system includes a plurality of electric pumps fluidly connected to the well, and configured to pump fluid into the wellbore at high pressure so that the fluid passes from the wellbore into the, and fractures the formation. The system can also include a plurality of natural gas powered generators electrically connected to the plurality of electric pumps to provide electrical power to the pumps.

Claims (28)

1. A hydraulic fracturing system for fracturing a subterranean formation, the hydraulic fracturing system comprising:

a hydraulic fracturing pump configured to pump fracturing fluid;

an electric motor configured to drive the hydraulic fracturing pump; and

a variable frequency drive (VFD) configured to control a speed of the electric motor, the VFD comprising:

a heat sink comprising a thermal sensor, the heat sink coupled to power semiconductor components of the VFD;

a microprocessor configured to monitor the thermal sensor; and

one or more user interfaces configured to provide information to an operator.

2. The hydraulic fracturing system of claim 1 , further comprising an electric generator electrically coupled to the electric motor to provide electric power to the electric motor.

3. The hydraulic fracturing system of claim 2 , wherein the electric generator is a gas turbine generator.

4. The hydraulic fracturing system of claim 1 , wherein the hydraulic fracturing pump is a triplex or quintaplex pump.

5. The hydraulic fracturing system of claim 1 , wherein the hydraulic fracturing pump comprises a 6.353 to 1 gear reduction.

6. The hydraulic fracturing system of claim 1 , further comprising a trailer that supports the hydraulic fracturing pump, the motor, and the VFD.

7. The hydraulic fracturing system of claim 6 , wherein the hydraulic fracturing pump comprises at least two hydraulic pumps.

8. The hydraulic fracturing system of claim 6 , further comprising a skid that is supported by the trailer, the skid supporting the hydraulic fracturing pump, the motor, and the VFD.

9. The hydraulic fracturing system of claim 1 , wherein the VFD performs motor diagnostics.

10. The hydraulic fracturing system of claim 9 , wherein the motor diagnostics comprises detection of an electrical short circuit or an electrical ground fault.

11. A hydraulic fracturing method, comprising:

operating an electric motor that drives a hydraulic fracturing pump;

pumping fracturing fluid by operation of the hydraulic fracturing pump;

by operation of a variable frequency drive (VFD), controlling a speed of the electric motor, wherein the VFD comprises power semiconductor heat sinks, and the heat sinks comprise one or more thermal sensors;

monitoring the thermal sensors by operation of a microprocessor; and

communicating with an operator via one or more user interfaces of the VFD.

12. The method of claim 11 , comprising, by operation of the VFD, performing motor diagnostics.

13. The method of claim 12 , wherein the performing motor diagnostics comprises detecting an electrical short circuit or an electrical ground fault.

14. The method of claim 11 , comprising, by operation of an electric generator, providing electric power to the electric motor.

15. The method of claim 11 , comprising supporting the hydraulic fracturing pump, the electric motor, and the VFD on a trailer.

16. The method of claim 15 , comprising supporting the hydraulic fracturing pump, the motor, and the VFD on a skid that is supported on the trailer.

17. The method of claim 11 , wherein the thermal sensors are monitored to prevent damage to power semiconductors of the VFD.

Assignments (2)
SECURITY INTEREST Recorded Jul 9, 2026
From: PROFRAC SERVICES, LLC; PROFRAC HOLDINGS II, LLC; U.S. WELL SERVICES, LLC; U.S. WELL SERVICES HOLDINGS, LLC; BEST PUMP AND FLOW LLC; PROFRAC HOLDINGS, LLC
To: ECLIPSE BUSINESS CAPITAL LLC
Reel/Frame 075942/0765 →
ASSIGNMENT OF ASSIGNOR'S INTEREST Recorded Oct 10, 2023
From: BROUSSARD, JOEL N.; MCPHERSON, JEFF; KURTZ, ROBERT
To: U.S. WELL SERVICES, LLC
Reel/Frame 065175/0240 →
Continuity (5)
Continuation 17493092 · Oct 4, 2021
Continuation 16456777 · Jun 28, 2019
Continuation 15202085 · Jul 5, 2016
Continuation 13679689 · Nov 16, 2012
Related Publication 20240287885A1 · Aug 29, 2024
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