Patents by Inventor Sylvie Daniel

Sylvie Daniel 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).

  • Viscoelastic surfactant fluids stable at high brine concentrations
    Publication number: 20020033260
    Abstract: Present invention relates to high brine carrier fluid, said carrier fluid selected from the group consisting of organic acids, organic acid salts, inorganic salts and combination of one or more organic acids or organic acid salts, a co-surfactant and an amount of a zwitterionic surfactant. The invention also relates to methods of treating a subterranean wellbore, including drilling, hydraulic fracturing, gravel placement, scale removing, mud cake removing, using said high brine carrier fluid.
    Type: Application
    Filed: July 30, 2001
    Publication date: March 21, 2002
    Inventors: Bernhard Lungwitz, Mark E. Brady, Sylvie Daniel, Mehmet Parlar, Colin J. Price-Smith, Elizabeth Morris