Cold weather package for oil field hydraulics

  • US 9,611,728 B2
  • Filed: 05/03/2016
  • Issued: 04/04/2017
  • Est. Priority Date: 11/16/2012
  • Status: Active Grant
First Claim
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1. A hydraulic fracturing system for fracturing a subterranean formation comprising:

  • a plurality of electric pumps fluidly connected to the well and powered by at least one electric motor, and configured to pump fluid into the wellbore at high pressure so that the fluid passes from the wellbore into the formation, and fractures the formation;

    a variable frequency drive connected to the electric motor to control the speed of the motor, wherein the variable frequency drive frequently performs electric motor diagnostics to prevent damage to the at least one electric motor; and

    a working fluid system comprising working fluid, and a heater that is in thermal contact with the working fluid;

    wherein the heater comprises a tank having working fluid and a heating element in thermal contact with the working fluid.

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