Patents by Inventor Roy D. Wilcox

Roy D. Wilcox 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 determining optimum concentration of hydration inhibitor for clays in drilling fluids
    Patent number: 4495800
    Abstract: A method is provided for selecting the optimum concentration of inhibitors such as soluble salts to effect maximum clay swelling and dispersion inhibition in an aqueous fluid of water-swellable, argillaceous materials including clays as exemplified by bentonite and argillaceous sediments, such as shales, encountered in drilling operations. In this method filtration measurements are first taken to develop a filtration parameter from which the optimum inhibitor concentration is readily determined.
    Type: Grant
    Filed: November 15, 1982
    Date of Patent: January 29, 1985
    Assignee: NL Industries, Inc.
    Inventor: Roy D. Wilcox