Patents by Inventor William J. Kirkland

William J. Kirkland 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).

  • Composition comprising water-soluble, nonionic hydrophobically modified hydroxyethyl cellulose and water-soluble, nonionic hydroxyethyl cellulose
    Patent number: 4892589
    Abstract: A novel cementing composition comprising a hydraulic cement and, as a fluid loss agent, water-soluble, nonionic hydrophobically modified hydroxyethyl cellulose, are disclosed. Preferably, the cementing composition further comprises water-soluble, nonionic hydroxyethyl cellulose as a second fluid loss agent. A novel aqueous slurry containing the cementing composition, a novel process of using the aqueous slurry to fill an annulus between a borehole wall and casing, and a novel composition of matter comprising specified amounts of water-soluble, nonionic hydrophobically modified hydroxyethyl cellulose and water-soluble, nonionic hydroxyethyl cellulose, are also disclosed.
    Type: Grant
    Filed: August 16, 1988
    Date of Patent: January 9, 1990
    Assignee: Aqualon Company
    Inventors: William J. Kirkland, Carl A. Lukach, William C. McLachlan
  • Cementing composition and aqueous hydraulic cementing solution comprising water-soluble, nonionic hydrophobically modified hydroxyethyl cellulose
    Patent number: 4784693
    Abstract: A novel cementing composition comprising a hydraulic cement and, as a fluid loss agent, water-soluble, nonionic hydrophobically modified hydroxyethyl cellulose, are disclosed. Preferably, the cementing composition further comprises water-soluble, nonionic hydroxyethyl cellulose as a second fluid loss agent. A novel aqueous slurry containing the cementing composition, a novel process of using the aqueous slurry to fill an annulus between a borehole wall and casing, and a novel composition of matter comprising specified amounts of water-soluble, nonionic hydrophobically modified hydroxyethyl cellulose and water-soluble, nonionic hydroxyethyl cellulose, are also disclosed.
    Type: Grant
    Filed: October 30, 1987
    Date of Patent: November 15, 1988
    Assignee: Aqualon Company
    Inventors: William J. Kirkland, Carl A. Lukach, William C. McLachlan