Patents by Inventor Antide Putz

Antide Putz 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 reducing retention of a displacement agent and application to assisted recovery of hydrocarbons
    Patent number: 5368101
    Abstract: A method for reducing retention of a polymer based displacement agent injected into a hydrocarbon containing rock matrix involves treating the matrix with an adsorbent solution containing alkali metal phosphates after the rock matrix comprising clays has been stabilized by injection of a solution containing cations obtained from KCl or NaCL salts. The presence of the cations increases the effect of the adsorbent solution.
    Type: Grant
    Filed: June 2, 1993
    Date of Patent: November 29, 1994
    Assignee: Institut Francais du Petrole
    Inventors: Guy Chauveteau, Jacqueline Lecourtier, Veronique Plazanet, Antide Putz
  • Process for transporting particles in a porous medium
    Patent number: 5299638
    Abstract: The invention relates to an improved method for injecting and transporting small particles in a natural porous medium. The method is characterized in that, in a first step, the porous medium is conditioned by means of an aqueous solution containing a hydrocarbonaceous compound, polymers or surface-active agents, in a second step, a plug of suspended particles is injected in the aqueous medium containing at least one hydrocarbonaceous compound, polymer or surface-active agent and, in a third step, the plug of particles is pushed by an appropriate aqueous medium. The method is particularly useful for implantation of bacteria in a porous medium.
    Type: Grant
    Filed: June 2, 1992
    Date of Patent: April 5, 1994
    Assignee: Societe Nationale Elf Aquitaine
    Inventors: Pascal Cheneviere, Jacques-Philippe De Farcy De Malnoe, Antide Putz, Michel Sardin