Patents by Inventor Daniel R. Sultenfus

Daniel R. Sultenfus 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).

  • In situ RF heating of stacked pay zones
    Patent number: 9222343
    Abstract: A method of heating stacked pay zones in a hydrocarbon formation by radio frequency electromagnetic waves is provided. In particular, radio frequency antenna array having multiple antenna elements are provided inside a hydrocarbon formation that has steam-impermeable structure. The antenna elements are so positioned and configured that the hydrocarbons in the place where conventional thermal methods cannot be used to heat due to the steam-impermeable structure can now be heated by radio frequency electromagnetic waves.
    Type: Grant
    Filed: November 19, 2012
    Date of Patent: December 29, 2015
    Assignees: ConocoPhillips Company, Harris Corporation
    Inventors: Wendell P. Menard, Daniel R. Sultenfus, Francis E. Parsche, Mark A. Trautman