Patents by Inventor Curtis Alan CHEATHAM

Curtis Alan CHEATHAM has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Real-time stuck pipe warning system for downhole operations
    Patent number: 10513920
    Abstract: A method of performing an operation in a wellbore includes performing the operation in the wellbore from a rig; and, while performing the operation, repeatedly: inputting one or more predicted values from a model of the wellbore; inputting one or more measured parameters from one or more sensors of the rig; calculating a deviation of each measured parameter from a respective predicted value; applying a weighting factor to each calculated deviation to obtain a respective alert level; calculating a rate of change of each measured parameter from a parameter previously measured by the respective sensor; applying a weighting factor to each calculated rate of change to obtain a respective alert level; and adding the alert levels and dividing the sum thereof by a maximum alert level to obtain a stuck pipe risk.
    Type: Grant
    Filed: January 27, 2016
    Date of Patent: December 24, 2019
    Assignee: WEATHERFORD TECHNOLOGY HOLDINGS, LLC
    Inventors: Kent Patrick Salminen, Curtis Alan Cheatham, Mark Adrian Smith
  • REAL-TIME STUCK PIPE WARNING SYSTEM FOR DOWNHOLE OPERATIONS
    Publication number: 20160369621
    Abstract: A method of performing an operation in a wellbore includes performing the operation in the wellbore from a rig; and, while performing the operation, repeatedly: inputting one or more predicted values from a model of the wellbore; inputting one or more measured parameters from one or more sensors of the rig; calculating a deviation of each measured parameter from a respective predicted value; applying a weighting factor to each calculated deviation to obtain a respective alert level; calculating a rate of change of each measured parameter from a parameter previously measured by the respective sensor; applying a weighting factor to each calculated rate of change to obtain a respective alert level; and adding the alert levels and dividing the sum thereof by a maximum alert level to obtain a stuck pipe risk.
    Type: Application
    Filed: January 27, 2016
    Publication date: December 22, 2016
    Inventors: Kent Patrick SALMINEN, Curtis Alan CHEATHAM, Mark Adrian SMITH