Refueling method for supplying fuel to hydraulic fracturing equipment

A refueling method for supplying fuel to a plurality of hydraulic fracturing equipment, the method comprising:

• a) installing a main fuel source at a fractionation operation, the main fuel source containing the fuel;
• b) fluidly connecting the main fuel source to the plurality of hydraulic fracturing equipment, wherein each piece of hydraulic fracturing equipment of the plurality of hydraulic fracturing equipment provides downhole fluids to a well;
• c) connecting a plurality of pressurization units fluidly connected to the main fuel source, wherein each pressurization unit of the plurality of pressurization units comprises:
• i. a motor fuel tank containing the fuel;
• ii. a valve element connected to the motor fuel tank;
• iii. a supply coupling device connected to the valve element, the supply coupling device receiving the fuel from one or more supply fuel lines from the main fuel source;
• iv. a pump fluidly connected to the supply coupling device for receiving the fuel from the supply coupling device and providing the fuel to an onboard motor;
• v. a return coupling device for receiving the fuel from the onboard motor and transferring the fuel through one or more return fuel lines to the main fuel source;
• and
• vi. a plurality of fuel pressure regulators, wherein each fuel pressure regulator of the plurality of fuel pressure regulators is in communication between the one or more supply fuel lines and the supply coupling device for reducing fuel pressure coming from the one or more supply fuel line;
• d) using the valve element to stop a fuel flow from the motor fuel tank when the main fuel source supplies the fuel to the supply coupling device and automatically starts the fuel flow from the motor fuel tank to the pump when a system failure prevents the main fuel source from supplying the fuel to the supply coupling device;
• and
• e) using the one or more return fuel lines with the return coupling device for the transfer of the fuel to the motor fuel tank when a system failure prevents the main fuel source from supplying the fuel to the supply coupling device.