Patents by Inventor Neal Davis, II

Neal Davis, II 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).

  • Water-wettable drilling mud additives containing uintaite
    Patent number: 5030365
    Abstract: A water-based drilling mud additive comprising a pre-blended combination of about 2 parts of high softening point uintaite, about 1 part of a lower softening point uintaite, about 1 part of causticized lignite, and a strongly lipophilic, non-ionic surfactant is disclosed. This composition decreases shale sloughing and borehole instability during drilling of wells.
    Type: Grant
    Filed: February 24, 1989
    Date of Patent: July 9, 1991
    Assignee: Chevron Research Company
    Inventors: K. Clark Christensen, Neal Davis, II, Michael Nuzzolo
  • Water-wettable drilling mud additives containing uintaite
    Patent number: RE35163
    Abstract: A water-based drilling mud additive comprising a preblended combination of about 2 parts of high softening point uintaite, about 1 part of a lower softening point uintaite, about 1 part of causticized lignite, and a strongly lipophilic, non-ionic surfactant is disclosed. This composition decreases shale sloughing and bore-hole instability during drilling of wells.
    Type: Grant
    Filed: December 18, 1992
    Date of Patent: February 27, 1996
    Assignee: American Gilsonite Company
    Inventors: K. Clark Christensen, Neal Davis, II, Michael Nuzzolo