Patents by Inventor Karl G. Guilbeau

Karl G. Guilbeau 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).

  • Preparation of viscosifiers for zinc salt workover and completion brines
    Patent number: 4415463
    Abstract: Viscosifiers for addition to high zinc salt brines, used as oil well workover and completion fluids, are prepared from natural polysaccharide gums by treatment with a basic nitrogen reagent, such as a quaternary ammonium compound, hexamethylene tetramine, or dimethylol urea. The treated viscosifiers have improved dispersibility and give increased viscosity effects in the brines. Preferably, the viscosifiers are prepared from carrageenan or locust bean gums.
    Type: Grant
    Filed: June 26, 1981
    Date of Patent: November 15, 1983
    Assignee: The Dow Chemical Co.
    Inventors: Benjamin Mosier, Jack L. McCrary, Karl G. Guilbeau
  • Preparation of viscosifiers for zinc salt workover and completion brines
    Patent number: 4350601
    Abstract: Viscosifiers for addition to high zinc salt brines, used as oil well workover and completion fluids, are prepared from polysaccharide gums or gelatin by treatment with formaldehyde and/or an aliphatic dialdehyde containing from 2 to 6 carbons. The treated viscosifiers have improved dispersibility and give increased viscosity effects in the brines. Preferably, the viscosifiers are prepared from carrageenan, locust bean gum, hydroxyethyl cellulose, or gelatin by treatment with a mixture of formaldehyde and glyoxal.
    Type: Grant
    Filed: May 18, 1981
    Date of Patent: September 21, 1982
    Assignee: The Dow Chemical Co.
    Inventors: Benjamin Mosier, Jack L. McCrary, Karl G. Guilbeau