Patents by Inventor James Gordon Hemrick

James Gordon Hemrick 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).

  • Stress sensor for cement or fluid applications
    Patent number: 10451497
    Abstract: A system and method measuring subterranean stress. The system and method includes a non-destructive sheath enveloping a tubular structure positioned in direct contact with a lateral subterranean rock formation for sensing expansive changes in the subterranean rock formation. A fiber optic is directly embedded in the non-destructive sheath positioned adjacent to the exterior surface of the tubular structure. The fiber optic transmits light and thereafter receives light in proportion to the expansive changes in the subterranean rock formation. A spectrometer connected to the fiber optic remote from the non-destructive sheath. The spectrometer measures hydrostatic stress in the subterranean rock formation without estimating acoustoelastic effects or occluding the tubular structure.
    Type: Grant
    Filed: August 11, 2017
    Date of Patent: October 22, 2019
    Assignee: UT-Battelle, LLC
    Inventors: Yarom Polsky, Michael J. Lance, James Gordon Hemrick
  • STRESS SENSOR FOR CEMENT OR FLUID APPLICATIONS
    Publication number: 20190049324
    Abstract: A system and method measuring subterranean stress. The system and method includes a non-destructive sheath enveloping a tubular structure positioned in direct contact with a lateral subterranean rock formation for sensing expansive changes in the subterranean rock formation. A fiber optic is directly embedded in the non-destructive sheath positioned adjacent to the exterior surface of the tubular structure. The fiber optic transmits light and thereafter receives light in proportion to the expansive changes in the subterranean rock formation. A spectrometer connected to the fiber optic remote from the non-destructive sheath. The spectrometer measures hydrostatic stress in the subterranean rock formation without estimating acoustoelastic effects or occluding the tubular structure.
    Type: Application
    Filed: August 11, 2017
    Publication date: February 14, 2019
    Inventors: Yarom Polsky, Michael J. Lance, James Gordon Hemrick