Patents by Inventor Ray A. Roeder

Ray A. Roeder 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).

  • Density neutron self-consistent caliper
    Patent number: 4791797
    Abstract: Two downhole measurement-while-drilling tools, at least one of which is borehole sensitive, are used to make standard measurements of borehole conditions while drilling. From these measurements, and with some prior knowledge of the lithology, the caliber of the borehole is determined by iteration. The preferred tools are a neutron porosity and a density tool with lithology having been determined by prior seismic survey techniques.
    Type: Grant
    Filed: February 17, 1988
    Date of Patent: December 20, 1988
    Assignee: NL Industries, Inc.
    Inventors: William C. Paske, Paul F. Rodney, Ray A. Roeder