Drilling System and Associated System and Method for Monitoring, Controlling, and Predicting Vibration in an Underground Drilling Operation
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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Abstract
A drilling system and associated systems and methods for monitoring, controlling, and predicting vibration of a drilling operation. The vibration information can include axial, lateral or torsional vibration of a drill string.
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Citations
19 Claims
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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:
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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; andoperating 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. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A drilling system configured to form a borehole in an earthen formation during a drilling operation, the drilling system comprising:
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a drill string supporting a drill bit, the drill bit configured to define the borehole; a plurality of sensors configured to obtain drilling operation information and measured vibration information, wherein one or more of the plurality of sensors are configured to measure in the borehole during the drilling operation, at least one of a axial vibration, lateral vibration, and a torsional vibration of the drill string so as to obtain the measured vibration information; at least one computing device including a memory portion having stored thereon drilling system component information, the drilling system component information including one or more characteristics of the drill string, the memory portion further including expected operating information for the drilling operation, the expected operating information including at least a weight-on-bit (WOB), a rotational speed of the drill bit, a borehole diameter, and a vibration damping coefficient; and a computer processor in communication with the memory portion, the computer processor configured to predict vibration information for the drill string, the predicted vibration information including at least a predicted amplitude for at least one of the axial vibration, the lateral vibration, and the torsional vibration of the drill string, the predicted vibration information being based on the drilling system component information and an energy balance of the drill string operating according to the expected operation information for the drilling operation; the computing processor being further configured to compare 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, wherein the computing device is configured to update the drilling system model if there a difference between the expected and measured vibration information is detected. - View Dependent Claims (12, 13, 14, 15, 16, 17, 18, 19)
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Specification