Patents by Inventor Walter B. Fair, Jr.

Walter B. Fair, Jr. 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).

  • Unplugging brine-submerged perforations
    Patent number: 4399868
    Abstract: Fluid passageways between a well borehole and a subterranean reservoir which are both plugged and submerged within relatively dense brine can be contacted with heat and oil solvent by arranging a nitrogen gas generating aqueous solution to be both reactive at the reservoir temperature and denser than the brine in the borehole and flowing alternating slugs of it and a liquid oil solvent into the zone to be treated.
    Type: Grant
    Filed: September 30, 1981
    Date of Patent: August 23, 1983
    Assignee: Shell Oil Company
    Inventors: Edwin A. Richardson, Walter B. Fair, Jr.
  • Well treating process for chemically heating and modifying a subterranean reservoir
    Patent number: 4330037
    Abstract: A portion of a subterranean oil and water-containing reservoir is concurrently chemically heated and selectively increased in its effective permeability to oil by injecting a solution of compounds containing ammonium ions and nitrite ions, which react exothermically to generate gaseous nitrogen, and a reaction-rate-controlling buffer. The reactant concentration and the rate at which the solution is injected are arranged to provide a selected temperature increase within a selected portion of the reservoir.
    Type: Grant
    Filed: December 12, 1980
    Date of Patent: May 18, 1982
    Assignee: Shell Oil Company
    Inventors: Edwin A. Richardson, Walter B. Fair, Jr.