Patents by Inventor Sabine Zeilinger

Sabine Zeilinger 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).

  • Water-based foaming composition-method for making same
    Patent number: 6172010
    Abstract: The invention concerns a water based foaming composition and the method of making it. The composition is optimized in that it contains a surfactant specifically selected according to the polymer also present in the composition. The surfactant and the polymer are selected so that they are oppositely charged. The invention is very useful in drilling or treating wells.
    Type: Grant
    Filed: September 22, 1998
    Date of Patent: January 9, 2001
    Assignee: Institut Francais du Petrole
    Inventors: Jean-François Argillier, Annie Audibert-Hayet, Sabine Zeilinger
  • Drilling method and system using foam--foaming composition
    Patent number: 6148932
    Abstract: The invention concerns a method for underground mining comprising the following steps: circulating in a well a foaming composition containing surfactants with cloud point higher than the temperature of the underground formation, heating the composition returning from the bottom to a temperature higher than the cloud point. The invention also concerns a system and a foaming composition based on water for implementing the method. The invention is useful for drilling and oil well completion operations requiring the use of a low-density fluid.
    Type: Grant
    Filed: December 2, 1998
    Date of Patent: November 21, 2000
    Assignee: Institut Francias du Petrole
    Inventors: Jean-Fran.cedilla.ois Argillier, Annie Audibert-Hayet, Sabine Zeilinger