Patents by Inventor Randy R. Riggs

Randy 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).

  • Real-time, limited orientation sensor auto-calibration
    Patent number: 9804288
    Abstract: A system method and computer-readable medium for correcting measurements obtained by a down hole tool for residual measurement errors is disclosed. A down hole tool having at least two directional field sensors is disposed in a borehole. The at least two directional sensors are substantially orthogonal to each other and to a longitudinal axis of the down hole tool. Measurements are obtained from the at least two directional sensors during rotation of the tool by at least 360 degrees around the longitudinal axis of the tool. Residual measurement errors are determined for the obtained measurements, and a quality level of the determined residual measurement errors selected. The determined residual measurement errors are applied to the obtained measurements when the determined residual measurement errors are consistent with the selected quality level.
    Type: Grant
    Filed: May 16, 2014
    Date of Patent: October 31, 2017
    Assignee: BAKER HUGHES, a GE COMPANY, LLC
    Inventors: Robert A. Estes, Randy R. Riggs, Francis Chad Hanak, John F. Priest
  • Real-Time, Limited Orientation Sensor Auto-Calibration
    Publication number: 20150331138
    Abstract: A system method and computer-readable medium for correcting measurements obtained by a down hole tool for residual measurement errors is disclosed. A down hole tool having at least two directional field sensors is disposed in a borehole. The at least two directional sensors are substantially orthogonal to each other and to a longitudinal axis of the down hole tool. Measurements are obtained from the at least two directional sensors during rotation of the tool by at least 360 degrees around the longitudinal axis of the tool. Residual measurement errors are determined for the obtained measurements, and a quality level of the determined residual measurement errors selected. The determined residual measurement errors are applied to the obtained measurements when the determined residual measurement errors are consistent with the selected quality level.
    Type: Application
    Filed: May 16, 2014
    Publication date: November 19, 2015
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Robert A. Estes, Randy R. Riggs, Francis Chad Hanak, John F. Priest