Patents by Inventor Forest A. Scearce

Forest A. Scearce 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 of determining the concentration of solid lubricants in drilling fluids
    Patent number: 4369655
    Abstract: A method of determining the concentration of spherical solids used as lubricants in drilling fluids in which the solid lubricant together with other solids of a given particle size are separated from a predetermined volume of the drilling mud, are admixed with a liquid, transferred to a graduated measuring tube which permits a direct reading of the volume of the solid lubricant.
    Type: Grant
    Filed: December 12, 1980
    Date of Patent: January 25, 1983
    Assignee: NL Industries, Inc.
    Inventor: Forest A. Scearce
  • Invert emulsion well-servicing fluids
    Patent number: 4306980
    Abstract: A water-in-oil well servicing fluid comprising a continuous oleaginous phase, an aqueous phase, an oleophilic anhydride and lime, and a method of preparing same.
    Type: Grant
    Filed: December 3, 1979
    Date of Patent: December 22, 1981
    Assignee: NL Industries, Inc.
    Inventors: Israel M. Brandt, Forest A. Scearce