Patent ID: 9371831
Filing Date: 2016-06-21
CPC Classification: B67D,E21B,F04B,F16K

Claim Text:
1. 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: 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.