Patents by Inventor Geza Csajtai

Geza Csajtai 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).

  • Method for stabilizing clay minerals during oil exploitation by steam injection
    Patent number: 4875809
    Abstract: The present invention relates to a new process for stabilizing the clay minerals in reservoir rocks containing oil, in particular in rock comprising sandstones, sand, or marliceous sandstones as well as eliminating the electrostatic dispersion and swelling of the clays when steam injection is used for mineral oil exploitation. According to the process, cations capable of stabilizing the reservoir rock, having a hydrated diameter of 0.13 to 0.15 nm, preferably potassium and/or ammonium and/or zirconium ions are introduced in the form of a 0.01 to 5.0 N aqueous solution or in the form of a vapor mixture or a mixture of steam and gas(es).
    Type: Grant
    Filed: April 28, 1988
    Date of Patent: October 24, 1989
    Inventors: Geza Csajtai, Sandor Doleschall, Gyula Milley, Miklos Kristof, Tibor Paal, Daniel Racz, Bela Toth