Patents by Inventor Pierre Bouchut

Pierre Bouchut 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).

  • Non-polluting dispersing agent for drilling fluids based on freshwater or salt water
    Patent number: 5099928
    Abstract: A non-polluting dispersing agent for drilling fluids based on soft water or salt water.A dispersing agent for aqueous drilling fluids, optionally saline, belonging to the group of polymers and/or copolymers containing acid functions which is characterized in that, to ensure that these fluids retain their rheological characteristics, even under the extreme temperature and pressure conditions prevailing in deep bore holes, said dispersing agent is a salt of said polymers and/or copolymers of which the salifying cation corresponds to a metal having a Pauling electronegativity at least equal to 0.95 and preferably greater than 1.
    Type: Grant
    Filed: July 16, 1990
    Date of Patent: March 31, 1992
    Assignee: Coatex S.A.
    Inventors: Pierre Bouchut, Yves Kensicher, Jacky Rousset
  • Composition cimentaire hydraulique a prise retardee pour cimentation a hautes temperature et pression
    Patent number: 4681634
    Abstract: Hydraulic cement composition with delayed setting, intended to be employed in an environment which may be under extreme temperature, pressure and salinity conditions, the composition being characterized in that it incorporates(a) a saline or nonsaline aqueous liquid phase,(b) at least one hydraulic cement,(c) a setting-retarder adjuvant preserving and/or improving the rheological properties, a water-soluble copolymer resulting from the copolymerization of ethylenic acids, acrylamides and ethylenic esters of phosphoric acid.
    Type: Grant
    Filed: October 16, 1985
    Date of Patent: July 21, 1987
    Assignees: Coatex S.A., Total Compagnie Francaise des Petroles S.A.
    Inventors: Yves Roca, Jacky Rousset, Pierre Bouchut, Marie-Christine Leblanc, Daniel Baffreau