Patents by Inventor George Tso-Chih Woo

George Tso-Chih Woo 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).

  • Surfactant compositions and uses therefor
    Patent number: 6302209
    Abstract: Solid surfactant suspension compositions are formed by combining solid surfactants, such as alpha-olefin sulfonates, with an organic base fluid, such as diesel. Solid surfactant suspensions may be combined with an aqueous carrier fluid to form surfactant-containing fluids suitable for, among other things, forming foams or for water wetting surfaces. Solid surfactant suspensions may also be combined with additive materials, such as polymer particles, to form a dispersion or emulsion. Polymer-containing solid surfactant suspensions may also be combined with aqueous carrier fluids to form, for example, viscosified, gelled, or foamed fluids. Concentration of solid surfactant materials contained in a solid surfactant suspension may be varied to affect the function the solid surfactant suspension. For example, the solid surfactant material may function as a polymer surface wetting agent, an emulsifier, a dispersant, a viscosifier, and/or a foamer in well completion and remedial and/or workover fluids.
    Type: Grant
    Filed: September 10, 1998
    Date of Patent: October 16, 2001
    Assignee: BJ Services Company
    Inventors: Joseph E. Thompson, Sr., Harold D. Brannon, George Tso-Chih Woo, William R. Wood, Jeffrey C. Dawson, Marshall G. Ault
  • Acid gels for fracturing subterranean formations
    Patent number: 6046140
    Abstract: A crosslinked acid gel comprising an emulsion polymer and an external activator is provided. Methods for acid fracturing subterranean formations using the crosslinked acid gel are also provided.
    Type: Grant
    Filed: September 29, 1999
    Date of Patent: April 4, 2000
    Assignee: BJ Services Company
    Inventors: George Tso-chih Woo, Joel Lynn Boles, Enrique Lopez, Arthur Steven Metcalf, Jeffrey Carl Dawson
  • Acid gels for fracturing subterranean formations
    Patent number: 5975206
    Abstract: A crosslinked acid gel comprising an emulsion polymer and an external activator is provided. Methods for acid fracturing subterranean formations using the crosslinked acid gel are also provided.
    Type: Grant
    Filed: March 31, 1998
    Date of Patent: November 2, 1999
    Assignee: BJ Services Company
    Inventors: George Tso-chih Woo, Joel Lynn Boles, Enrique Lopez, Arthur Steven Metcalf, Jeffrey Carl Dawson