Patents by Inventor Philip C. Freyaldenhoven

Philip C. Freyaldenhoven 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).

  • Primary cementing
    Patent number: 5125455
    Abstract: This invention relates to a method of cementing a cylinder in a bore, such as a casing in a wellbore, which method involves the use of a hydraulic cement consisting of discrete particles having a particle size not greater than about 30 microns. The cement which is utilized in a water slurry, has a low density, good thixotropic properties and, in one embodiment, expansive characteristics.
    Type: Grant
    Filed: January 8, 1991
    Date of Patent: June 30, 1992
    Assignee: Halliburton Services
    Inventors: Kirk L. Harris, Edward F. Vinson, Daniel L. Bour, Patrick T. Brunette, Philip C. Freyaldenhoven, Lindsey D. Lee