Mobile, modular, electrically powered system for use in fracturing underground formations

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.