Patents by Inventor Ronald A. Hamm

Ronald A. Hamm 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).

  • Recovering hydrocarbons from tar sand or heavy oil reservoirs
    Patent number: 5318124
    Abstract: Method of recovering fluids from an underground tar sand reservoir or heavy oil reservoir comprising (a) drilling and completing a first pair of wells and a second pair of wells, each pair comprising an injection well terminating in the reservoir and a production well terminating in the reservoir below the injection well; (b) circulating steam through the injection wells and performing alternate steam injection and fluid production through the production wells; and (c) injecting steam through the injection wells while producing fluids through the production wells, wherein the injection pressure of the injection well of the first pair of wells is greater than the injection pressure of the injection well of the second pair of wells.
    Type: Grant
    Filed: November 12, 1992
    Date of Patent: June 7, 1994
    Assignees: Pecten International Company, Shell Canada Limited
    Inventors: Tee S. Ong, Ronald A. Hamm