Patents by Inventor Randell R. Riggs

Randell R. Riggs 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).

  • Extending the range of a MEMS gyroscope using eccentric accelerometers
    Patent number: 10378330
    Abstract: A tool for use in a borehole penetrating a formation method and a method for using the tool is disclosed. The tool includes a gyroscope for obtaining a first measurement of a rotation rate of the apparatus and at least one accelerometer for obtaining a second measurement of the rotation rate of the apparatus. A processor generates an estimate of the rotation rate using at least one of the first measurement of rotation rate and the second measurement of rotation rate. The estimate of the rotation rate is sued to determine a rotational position of a formation parameter measurement obtained during rotation of the apparatus in the borehole.
    Type: Grant
    Filed: December 22, 2016
    Date of Patent: August 13, 2019
    Assignee: BAKER HUGHES, A GE COMPANY, LLC
    Inventors: Robert A. Estes, Randell R. Riggs
  • EXTENDING THE RANGE OF A MEMS GYROSCOPE USING ECCENTRIC ACCELEROMETERS
    Publication number: 20180180418
    Abstract: A tool for use in a borehole penetrating a formation method and a method for using the tool is disclosed. The tool includes a gyroscope for obtaining a first measurement of a rotation rate of the apparatus and at least one accelerometer for obtaining a second measurement of the rotation rate of the apparatus. A processor generates an estimate of the rotation rate using at least one of the first measurement of rotation rate and the second measurement of rotation rate. The estimate of the rotation rate is sued to determine a rotational position of a formation parameter measurement obtained during rotation of the apparatus in the borehole.
    Type: Application
    Filed: December 22, 2016
    Publication date: June 28, 2018
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Robert A. Estes, Randell R. Riggs