Patents by Inventor Charles A. Christopher, Jr.

Charles A. Christopher, 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).

  • Method for plugging high permeability zones in subterranean reservoirs
    Patent number: 4210204
    Abstract: Fresh water solutions of pectic materials are injected into high permeability zones in the subterranean reservoir wherein said materials upon contact with brine solutions form thick gels for the purpose of reducing the permeability of these high permeability zones thereby improving the vertical conformance efficiency of flooding operations within the reservoir.
    Type: Grant
    Filed: February 7, 1979
    Date of Patent: July 1, 1980
    Assignee: Texaco Inc.
    Inventors: Charles A. Christopher, Jr., Alvin O. Clauset, Jr.
  • Fluid for injection into a subterranean reservoir to displace hydrocarbons in the reservoir
    Patent number: 3956145
    Abstract: In a subterranean reservoir containing both petroleum and water interspersed, the petroleum may be preferentially produced by injecting into one well penetrating the reservoir a slug of fluid comprising hydrocarbon solvent, colloidal silica, water and a polymeric material followed by a driving fluid comprising water to force the reservoir fluids into another well penetrating the reservoir where they are produced.
    Type: Grant
    Filed: February 6, 1974
    Date of Patent: May 11, 1976
    Assignee: Texaco Inc.
    Inventors: Charles A. Christopher, Jr., Abdus Satter