Patents by Inventor Geir Solland

Geir Solland 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).

  • Well cement compositions having improved properties and methods
    Patent number: 5149370
    Abstract: Cement compositions which have improved properties such as increased stability, reduced settling tendencies, enhanced fluid loss properties and the like and methods of using such cement compositions are provided. The cement compositions are comprised of water, hydraulic cement and an aqueous colloidal silicic acid suspension wherein the colloidal silicic acid particles have a specific surface area in the range of from about 50 m.sup.2 /g to about 1000 m.sup.2 /g.
    Type: Grant
    Filed: October 21, 1991
    Date of Patent: September 22, 1992
    Assignee: Halliburton Company
    Inventors: Stein Olaussen, Audun Bjordal, Geir Solland