Cable management of electric powered hydraulic fracturing pump unit
A hydraulic fracturing system includes a pump, an electrically powered motor for driving the pump, a trailer on which the pump and motor are mounted, and a transformer that steps down electricity for use by the motor. Electrical output from the transformer connects to a series of receptacles mounted onto a housing around the transformer. A similar set of receptacles is provided on the trailer and which are electrically connected to the motor. Power cables equipped with plugs on their opposing ends insert into the receptacles to close an electrical circuit between the transformer and pump.
1. A hydraulic fracturing system for fracturing a subterranean formation comprising:
a source of electricity;
a source receptacle that is in electrical communication with the source of electricity;
an electrically powered motor that is spaced apart from the source of electricity;
a motor receptacle that is in electrical communication with the motor; and
a cable assemblies that comprises,
a source plug that is insertable into the source receptacle,
a motor plug that is insertable into the motor receptacle, and
a cable in electrical communication with both the source plug and motor plug, so that when the source plug inserts into the source receptacle, and the motor plug inserts into the motor receptacle, electricity at a designated phase is transmitted from the source of electricity to the motor;
wherein electricity conducts from the source of electricity to the first motor along a first path, from the source of electricity to the second motor along a second path, and the first and second paths are separate and distinct from one another.
2. The hydraulic fracturing system of claim 1 , wherein the source receptacle is a plurality of source receptacles, and at least one of the plurality of source receptacles receives electricity from the source of electricity at a phase that is different from a phase of electricity by another at least one of the plurality of source receptacles from the source of the electricity.
3. The hydraulic fracturing system of claim 2 , wherein the cable is a plurality of cables, and wherein a first pair of the plurality of source receptacles receive electricity at a first phase, so that a corresponding first pair of cable assemblies that have source plugs inserted into the source receptacles conduct electricity at the first phase, wherein a second pair of the source receptacles receive electricity at a second phase, so that a corresponding second pair of cable assemblies that have source plugs inserted into the source receptacles conduct electricity at the second phase, and wherein a third pair of the source receptacles receive electricity at a third phase, so that a corresponding third pair of cable assemblies that have source plugs inserted into the source receptacles conduct electricity at the third phase.
4. The hydraulic fracturing system of claim 1 , wherein the source of electricity comprises a transformer having alternating current electricity at three different phases.
5. The hydraulic fracturing system of claim 1 , wherein the motor comprises a first motor, the system further comprising a second motor, and wherein the first and second motors each drive fracturing pumps.
6. A method of hydraulic fracturing comprising:
a) electrically connecting a fracturing pump motor with a source of electricity by inserting a source end of a cable into a source receptacle that is in electrical communication with the source of electricity and inserting a motor end of the cable, which is in electrical communication with the source end of the cable assembly, into a motor receptacle that is in electrical communication with the fracturing pump motor, wherein the fracturing pump motor comprises a first fracturing pump motor;
b) directing fracturing fluid to a suction end of a fracturing pump that is coupled with the fracturing pump motor;
c) causing the source of electricity to transmit electricity to the source receptacle, so that electricity conducts from the source receptacle, to the source and motor ends, to the motor receptacle, and to the motor; and
d) pressurizing the fracturing fluid with the fracturing pump to form pressurized fracturing fluid, and directing the pressurized fracturing fluid to a wellbore; and
e) repeating steps (a)-(c) using a second fracturing pump motor and a second cable;
wherein a path of electricity between the source of electricity and the first fracturing pump motor is separate and distinct from a path of electricity between the source of electricity and the second fracturing pump motor.
7. The method of claim 6 , wherein the source of electricity is a transformer that transmits 3-phase electricity.
8. The method of claim 6 , further comprising removing the ends of the cables from the receptacles, moving the source of electricity and fracturing pump motor to a different location, and repeating steps (a)-(c).