System and method for dedicated electric source for use in fracturing underground formations using liquid petroleum gas
First Claim
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1. A system for hydraulic fracturing, comprising:
- at least one pump adapted to pressurize and pump fracturing fluid into a wellbore at a well site;
at least one electric motor operatively coupled to the at least one pump such that the at least one electric motor is adapted to power the at least one pump;
a variable frequency drive connected to the at least one electric motor; and
at least one dedicated source of electricity for fracturing operations on the well site, wherein the at least one dedicated source of electricity comprises a turbine generator, and wherein the at least one dedicated source of electricity is operatively coupled to the at least one electric motor such that the dedicated source of electricity is adapted to supply electricity to the at least one electric motor for driving the at least one pump.
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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. The treatment fluid can comprise a water-based fracturing fluid or a waterless liquefied petroleum gas (LPG) fracturing fluid.
286 Citations
20 Claims
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1. A system for hydraulic fracturing, comprising:
- at least one pump adapted to pressurize and pump fracturing fluid into a wellbore at a well site;
at least one electric motor operatively coupled to the at least one pump such that the at least one electric motor is adapted to power the at least one pump;
a variable frequency drive connected to the at least one electric motor; and
at least one dedicated source of electricity for fracturing operations on the well site, wherein the at least one dedicated source of electricity comprises a turbine generator, and wherein the at least one dedicated source of electricity is operatively coupled to the at least one electric motor such that the dedicated source of electricity is adapted to supply electricity to the at least one electric motor for driving the at least one pump. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
- at least one pump adapted to pressurize and pump fracturing fluid into a wellbore at a well site;
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11. A method for hydraulic fracturing, comprising:
- providing at least one dedicated source of electric power for fracturing operations on a well site that comprises a wellbore to be fractured, wherein the dedicated source of electrical power is a turbine generator that converts a source of hydrocarbon fuel to electricity;
pressurizing a fracturing fluid using at least one pump driven by at least one electric motor at the well site, wherein the dedicated source of electric power provides electric power to the at least one electric motor that is operatively controlled with a variable frequency drive;
operating the at least one pump and the at least one electric motor using electric power from the at least one dedicated source of electric power to pump the fracturing fluid into the wellbore. - View Dependent Claims (12, 13, 14, 15, 16, 17)
- providing at least one dedicated source of electric power for fracturing operations on a well site that comprises a wellbore to be fractured, wherein the dedicated source of electrical power is a turbine generator that converts a source of hydrocarbon fuel to electricity;
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18. A system for hydraulically fracturing, comprising:
- at least one dedicated source of electricity for fracturing operations on the well site, wherein the at least one dedicated source of electricity comprises a turbine generator;
at least one electric motor connected to the at least one dedicated source of electricity such that the dedicated source of electricity is capable of providing electric power to the at least one electric motor, the electric motor operatively controlled with a variable frequency drive;
at least one pump attached to the at least one electric motor such that the at least one electric motor is capable of driving the at least one pump to pressurize and pump fracturing fluid into a wellbore at a well site; and
wherein the fracturing fluid comprises liquid petroleum gas. - View Dependent Claims (19, 20)
- at least one dedicated source of electricity for fracturing operations on the well site, wherein the at least one dedicated source of electricity comprises a turbine generator;
Specification