Mobile, modular, electrically powered system for use in fracturing underground formations
First Claim
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1. A method of delivering fracturing fluid to a wellbore, the method comprising the steps of:
- providing a dedicated source of electric power at a site containing a wellbore to be fractured, wherein the dedicated source of electrical power is a turbine generator;
providing a source of natural gas, wherein the natural gas is used to drive the turbine generator in the production of electrical power;
providing one or more electric fracturing modules at the site, the electric fracturing modules comprising an electric motor and a coupled fluid pump, the electric motor operatively associated with the dedicated source of electric power;
providing the fracturing fluid for pressurized delivery to a wellbore;
operating the fracturing modules using electric power from the dedicated source to pump the fracturing fluid to the wellbore;
providing an electric blender module, the electric blender module comprising;
a fluid source, a fluid additive source, and a blender tub;
providing a fracturing trailer at the site for housing the one or more fracturing modules and the electric blender module; and
supplying electric power from the dedicated source to the electric blender module to affect blending of a fluid from the fluid source with a fluid additive from the fluid additive source to generate the fracturing fluid.
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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.
301 Citations
21 Claims
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1. A method of delivering fracturing fluid to a wellbore, the method comprising the steps of:
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providing a dedicated source of electric power at a site containing a wellbore to be fractured, wherein the dedicated source of electrical power is a turbine generator; providing a source of natural gas, wherein the natural gas is used to drive the turbine generator in the production of electrical power; providing one or more electric fracturing modules at the site, the electric fracturing modules comprising an electric motor and a coupled fluid pump, the electric motor operatively associated with the dedicated source of electric power; providing the fracturing fluid for pressurized delivery to a wellbore; operating the fracturing modules using electric power from the dedicated source to pump the fracturing fluid to the wellbore; providing an electric blender module, the electric blender module comprising;
a fluid source, a fluid additive source, and a blender tub;providing a fracturing trailer at the site for housing the one or more fracturing modules and the electric blender module; and supplying electric power from the dedicated source to the electric blender module to affect blending of a fluid from the fluid source with a fluid additive from the fluid additive source to generate the fracturing fluid. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15)
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16. A system for use in delivering pressurized fluid to a wellbore, the system comprising:
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a well site comprising a wellbore and a dedicated source of electricity; an electrically powered fracturing module operatively associated with the dedicated source of electricity, the electrically powered fracturing module comprising an electric motor and a fluid pump coupled to the electric motor; an electrically powered blender module operatively associated with the dedicated source of electricity and capable of providing treatment fluid to the fluid pump for delivery to the wellbore; a control system for regulating the fracturing module in delivery of treatment fluid from the electrically powered blender module to the fluid pump for delivery to the wellbore; and a fracturing trailer at the well site for housing the electrically powered fracturing module and the electrically powered blender module. - View Dependent Claims (17, 18, 19, 20, 21)
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Specification