Dual pump VFD controlled motor electric fracturing system

Patent metadata

Field	Value
Publication number	US-11851998-B2
Application number	US-202217868769-A
Country	US
Kind code	B2
Filing date	Jul 19, 2022
Priority date	Apr 7, 2011
Publication date	Dec 26, 2023
Grant date	Dec 26, 2023

Abstract

The present invention provides a method and system for providing on-site electrical power to a fracturing operation, and an electrically powered fracturing system. Natural gas can be used to drive a turbine generator in the production of electrical power. A scalable, electrically powered fracturing fleet is provided to pump fluids for the fracturing operation, obviating the need for a constant supply of diesel fuel to the site and reducing the site footprint and infrastructure required for the fracturing operation, when compared with conventional systems.

First claim

What is claimed is:

1. A system for use in delivering pressurized fluid to a wellbore, the system comprising:
a) an electrically powered fracturing system with at least one fracturing pump capable of pumping a fracturing fluid, wherein the pump is driven by at least one electric pump motor electrically connected to a portable turbine powered electrical generator, wherein the electrically powered fracturing system further comprises:
b) trailer on which the at least one fracturing pump and the at least one electric pump motor are mounted; and
c) an electric blender system configured to provide a blended fracturing fluid to the fracturing pump for delivery to a wellbore operation, comprising:

a blender tub;
a fluid additive system:
a fluid addition source hopper;
an inlet electric motor configured to drive an inlet pump, in communication with a fluid additive source and cable of pumping the fluid additive source into and out of the blender tub;
d) at least one variable control drive electrically connected to at least one electric motor to control the speed of at least one electric motor; and
e) at least one control system.

2. The system of claim 1 , wherein the fracturing fluid comprises liquid petroleum gas.

3. The system of claim 1 , wherein the trailer on which the electrically powered fracturing system is mounted further comprises at least one variable control drive mounted.

4. The system of claim 1 , wherein at least one variable control drive controls the speed of the at least one electric pump motor of the electrically powered fracturing system and the at least one variable control drive is mounted on a separate trailer from the electrically powered fracturing system.

5. The system of claim 4 , wherein at least one variable control drive controls the speed of at least one blending motor.

6. The system of claim 1 , wherein at least one electric motor is capable of operation in the range of up to 1500 revolutions per minute (rpm) and up to 20,000 foot per pounds (ft/lbs) of torque.

7. The system of claim 6 , wherein speed of the electric pump motor is controlled by one or more variable frequency drive.

8. The system of claim 1 , wherein the trailer on which the electrically powered fracturing system is mounted further comprises at least one variable control drive mounted on the same trailer.

9. The system of claim 1 , wherein the electrical generator is adapted to generate electricity at a rating of 13.8 kilovolts for fracturing operations.

10. The system of claim 1 , wherein the system produces no greater than about 80 decibels of sound.

11. The system of claim 1 , wherein the system produces carbon dioxide emissions no greater than 2200 kilogram per hour (kg/hr).

12. The system of claim 1 , wherein the system is powered by natural gas.

13. The system of claim 1 , wherein the system is powered by liquid condensate fuel.

14. The system of claim 1 , wherein the control system is further configured to monitor and control the turbine powered electrical generator.

15. The system of claim 1 , wherein one or more variable frequency drives control the speed of the at least one electric pump motor and the blending motor.

16. The system of claim 1 , wherein one or more variable frequency drives control the current of the at least one electric pump motor and the blending motor.

17. The system of claim 1 , wherein the control system is configured to control and monitor at least one pump, motors, and the turbine powered electrical generator utilizing a single point of control.

18. The system of claim 1 , wherein further comprising an electrical transformer and a drive unit that are in electrical communication with the turbine generator.

19. The system of claim 18 , wherein the electrical transformer is located on the same trailer as the at least one electric pump motor.

20. The system of claim 19 , wherein the drive unit is configured to step down voltage from the portable turbine powered electrical generator.

21. A method of delivering fracturing fluid to a wellbore, the method wherein comprising the steps of:
providing a portable turbine powered electrical generator with a control system electrically connected to the generator;
providing an electrically powered fracturing system with at least one fracturing pump capable of pumping a fracturing fluid comprising, driven by at least one electric pump motor electrically connected to a portable turbine powered electrical generator, and wherein the electrically powered fracturing further comprises a trailer on which the at least one pump and the at least one electric pump motor are mounted;
providing an electric blender system configured to provide a blended fracturing fluid to the fracturing pump for delivery to a wellbore operation, comprising:
a blender tub;
a fluid additive system:
a fluid addition source hopper;
an inlet electric motor configured to drive an inlet pump, in communication with a fluid additive source and cable of pumping the fluid additive source into and out of the blender tub;
providing at least one variable control drive electrically connected to the electric pump motor; and
pumping a fracturing fluid from the blending system into the electrically powered fracturing system; and
pumping the fracturing fluid using the at least one fracturing pump into a wellbore.

22. The method of claim 21 , wherein the fracturing fluid comprises liquid petroleum gas.

23. The method of claim 21 , wherein further comprising the step of controlling the speed of the electric pump motor through at least one variable control drive.

24. The method of claim 21 , wherein further comprising controlling the current delivered to the electric pump motor through at least one variable control drive.

25. The method of claim 24 , wherein further comprising controlling and monitoring motor and the turbine powered electrical generator utilizing a single point of control.

26. The method of claim 21 , wherein the electrical generator is adapted to generate electricity at a rating of 13.8 kilovolts for fracturing operations.

27. The method of claim 21 , wherein the system produces no greater than about 80 decibels of sound.

28. The method of claim 21 , wherein at least one electric motor is capable of operation in the range of up to 1500 revolutions per minute (rpm) and up to 20,000 foot per pounds (ft/lbs) of torque.

29. The method of claim 21 , wherein further comprising the step of providing a transformer and a drive unit electrically connected to the portable turbine powered electrical generator and stepping down the voltage of the portable turbine powered electrical generator.

30. The method of claim 21 , wherein further comprising providing a control system.

Assignees

• Typhon Tech Solutions U S Llc

Inventors

• Coli Todd
• Schelske Eldon

Classifications

• E21B43/26 Primary

  by forming crevices or fractures · CPC title

• B01F23/43

  using driven stirrers · CPC title

• B01F27/05

  Stirrers · CPC title

• B01F35/3204

  Motor driven, i.e. by means of an electric or IC motor · CPC title

• B01F35/71

  Feed mechanisms (with proportioning B01F35/80) · CPC title