Automated relief valve control system and method

  • US 9,857,807 B2
  • Filed: 01/25/2016
  • Issued: 01/02/2018
  • Est. Priority Date: 08/17/2012
  • Status: Active Grant
First Claim
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1. A pressure relief valve system, comprising:

  • a pressure relief valve having a closed state and an open state, wherein the pressure relief valve is configured to relieve pressure from high pressure tubing extending between a pump and a wellhead, and wherein the pressure relief valve is configured to be maintained in the closed state with a pressurized gas from a gas source;

    a sensor configured to detect pressure in the high pressure tubing;

    a controller programmable to have a stored pressure threshold, the controller being configured to receive data from the sensor and compare the pressure in the high pressure tubing to the stored pressure threshold;

    one or more flow pipes, the one or more flow pipes comprising an input portion configured to be connected to the gas source, and an output portion configured to be connected to the pressure relief valve;

    a reducing valve configured to be disposed between the input portion and the output portion, and to adjust the pressure in the output portion based on data from the controller; and

    a dump valve configured to open so that the state of the pressure relief valve changes from the closed state to the open state.

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