Patents by Inventor Harold R. Krause

Harold R. Krause 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).

  • Use of alkoxylated surfactants and aluminum chlorohydrate to improve brine-based drilling fluids
    Patent number: 6194355
    Abstract: A drilling fluid having a brine base fluid, aluminum chlorohydrate as a viscosifying agent, an alkoxylated surfactant, and an amphoteric polymer encapsulant has been found to have excellent viscoelasticity and suspension characteristics. Surprisingly, it has been discovered that a synergistic effect is present between the aluminum chlorohydrate and the surfactant such that less of each component is required when both are used together to suspend the same amount of solids, than if one or the other is used separately.
    Type: Grant
    Filed: February 9, 1999
    Date of Patent: February 27, 2001
    Assignee: Baker Hughes Incorporated
    Inventors: Michael A. Jarrett, Harold R. Krause, John C. Welch, Allen Gabrysch, Patricia Potts