Dual pump trailer mounted electric fracturing system
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.
1. A system for use in delivering pressurized fluid to a wellbore to be fractured, comprising:
a transportable electric turbine generator configured to generate and provide about 31 MW at 13,800 volts AC and all of the electrical power required for a fracturing system, said system comprising:
an electric motor electrically connected to the turbine generator;
a first fracturing fluid pump coupled to the electric motor and configured to be driven by the electric motor and to pump fracturing fluid into a conduit in communication with the wellbore;
a second fracturing fluid pump coupled to the electric motor and configured to be driven by the electric motor and to pump fracturing fluid into a conduit in communication with the wellbore at the same time as the first fracturing fluid pump;
at least one electric blending system;
local equipment for a fracturing operation; and
a trailer on which the electric motor, the first fracturing fluid pump, and the second fracturing fluid pump are mounted.
2. The system of claim 1 , further comprising a variable frequency drive electrically coupled to the electric motor, wherein the variable frequency drive is configured to control a speed of the electric motor.
3. The system of claim 2 , wherein the variable frequency drive is configured to control a maximum current available to the electric motor.
4. The system of claim 1 , further comprising an electrical transformer and a drive unit that are in electrical communication with the turbine generator.
5. The system of claim 4 , wherein the electric motor, the first fracturing fluid pump, the second fracturing fluid pump, the electrical transformer and the drive unit are located on a transportable trailer.
6. The system of claim 1 , wherein the turbine generator is powered by natural gas.
7. The system of claim 1 , wherein the turbine generator is powered by condensate liquid fuel.
8. The system of claim 1 , wherein the turbine generator provides a dedicated source of electrical power for fracturing operations at the wellbore.
9. The system of claim 1 , further comprising a control unit configured to control and monitor the fracturing fluid pumps, electric motor, at least one electric blending system, local equipment, and the turbine generator utilizing a single point control.
10. A system for use in delivering pressurized fluid to a wellbore to be fractured, comprising:
a transportable natural gas-powered source of generating electricity, the source being configured to generate and provide about 31 MW at 13,800 volts AC and all of the electrical power required to power a fracturing system, said fracturing system comprising:
an electrical motor electrically connected to the natural gas-powered source of generating electricity;
a first fracturing fluid pump coupled to the electric motor and configured to be driven by the electric motor and to pump fracturing fluid into a conduit in communication with the wellbore;
a second fracturing fluid pump coupled to the electric motor and configured to be driven by the electric motor and to pump fracturing fluid into a conduit in communication with the wellbore at the same time as the first fracturing fluid pump;
at least one electric blending system;
local equipment for a fracturing operation; and
a trailer on which the electric motor, the first fracturing fluid pump, and the second fracturing fluid pump are mounted.
11. The system of claim 10 , further comprising a variable frequency drive electrically coupled to the electric motor, wherein the variable frequency drive is configured to control a speed of the electric motor.
12. The system of claim 11 , wherein the variable frequency drive is configured to control a maximum current available to the electric motor.
13. The system of claim 10 , further comprising an electrical transformer and a drive unit that are in electrical communication with the natural gas-powered source of generating electricity.
14. The system of claim 13 , wherein the electric motor, the first fracturing fluid pump, the second fracturing fluid pump, the electrical transformer and the drive unit are located on a transportable trailer.
15. The system of claim 10 , wherein the natural gas-powered source of generating electricity provides a dedicated source of electrical power for fracturing operations at the wellbore.
16. The system of claim 10 , further comprising a control unit configured to control and monitor the fracturing fluid pumps, electric motor, at least one electric blending system, local equipment, and the natural gas-powered source of generating electricity utilizing a single point control.
17. A method of delivering pressurized fluid to a wellbore to be fractured, comprising:
providing a transportable electric turbine generator configured to generate and provide about 31 MW at 13,800 volts AC and all of the electrical power required to power a fracturing system, said fracturing system comprising:
an electric motor that is electrically connected to the turbine generator;
a first fracturing fluid pump coupled to the electric motor and configured to be driven by the electric motor and to pump fracturing fluid into a conduit in communication with the wellbore;
a second fracturing fluid pump coupled to the electric motor and configured to be driven by the electric motor and to pump fracturing fluid into a conduit in communication with the wellbore at the same time as the first fracturing fluid pump; and
a trailer on which the electric motor, the first fracturing fluid pump, and the second fracturing fluid pump are mounted.
18. The method of claim 17 , further comprising providing a variable frequency drive in communication with the electric motor, wherein the variable frequency drive is configured to control a speed of the electric motor.
19. The method of claim 18 , wherein the variable frequency drive is configured to control a current to the electric motor.
20. The method of claim 17 , wherein the turbine generator is powered by natural gas.
21. The method of claim 17 , wherein the turbine generator is powered by condensate liquid fuel.
22. The method of claim 17 , wherein the turbine generator provides a dedicated source of electrical power for fracturing operations at the wellbore.
23. The method of claim 17 , further providing a control unit configured to control and monitor the fracturing fluid pumps, electric motor, at least one electric blending system, local equipment, and the turbine generator utilizing a single point control.