Patents by Inventor Gregory R. Andersen

Gregory R. Andersen 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).

  • Gas lift process for restoring flow in depleted geothermal reservoirs
    Patent number: 4787450
    Abstract: A method is provided whereby continuous injection of lift gas into a producing geothermal well, preferably from a liquid-dominated reservoir, increases production flow of geothermal fluids from the well by initiating a steam distillation effect within the wellbore. Apparatus is also provided for continuously injecting the lift gas during production from the well.
    Type: Grant
    Filed: May 7, 1987
    Date of Patent: November 29, 1988
    Assignee: Union Oil Company of California
    Inventors: Gregory R. Andersen, Stephen D. Pye, Alice A. Probst