Patents by Inventor Paul E. Crossman

Paul E. Crossman 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).

  • Use of sequential fracturing and controlled release of pressure to enhance production of oil from low permeability formations
    Patent number: 5472050
    Abstract: Hydrocarbon production from a low permeability formation is increased by fracturing a production interval in the formation and restricting the release of pressure from the fracture to lengthen the time that the reservoir pressure remains above the fracture collapse pressure.
    Type: Grant
    Filed: September 13, 1994
    Date of Patent: December 5, 1995
    Assignee: Union Oil Company of California
    Inventors: Aaron T. Rhoten, Matthew A. Norris, Gregory S. Craley, Paul E. Crossman, Anthonius W. Vervloet