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Drilling System and Associated System and Method for Monitoring, Controlling, and Predicting Vibration in an Underground Drilling Operation

  • US 20150083492A1
  • Filed: 09/25/2013
  • Published: 03/26/2015
  • Est. Priority Date: 09/25/2013
  • Status: Active Grant
First Claim
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1. A method for monitoring and controlling a drilling system that includes a drill string and a drill bit supported at a downhole end of the drill string, the drilling system configured to form a borehole in an earthen formation, the method comprising the steps of:

  • predicting, via a drilling system model, vibration information for the drill string based on a set of drilling operating parameters, a bore hole information, and a drilling system component information, the set of drilling operating parameters including a weight-on-bit (WOB) and a drill bit rotational speed, and the drilling system component information including or more characteristics of the drill string and the drill bit; and

    the predicted vibration information including an amplitude for at least one of a axial vibration, lateral vibration, and a torsional vibration of the drill string, the drilling system model configured to predict vibration information based on an energy balance of the drill string operating according to the set of drilling operating parameters during an expected drilling operation; and

    operating the drilling system to drill the borehole in the earthen formation according to the set of drilling operating parameters;

    measuring in the borehole during the drilling operation at least one of the axial vibration, lateral vibration, and a torsional vibration of the drill string; and

    comparing the predicted vibration information for the drill string and the drill bit to the measured vibration information for the drill string and the drill bit, and if the step of comparing results in a difference between the expected and measured vibration information for each of the drill string and the drill bit, updating the drilling system model to reduce the difference between the expected and measured vibration information for the drill string and the drill bit.

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