Patents by Inventor Carine Dewattines

Carine Dewattines 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 and fluid for controlling the saturation of a formation around a well
    Patent number: 7238647
    Abstract: The present invention relates to a method and to a fluid for drilling or workover in a well running through a porous permeable formation, wherein a water-based well fluid circulates in said well. In the method, at most 3% by weight of a composition obtained from fat, or an oil, and an alcohol, is added to the fluid in addition to the conventional constituents for such a fluid, the chain lengths of the acid and alcohol parts being chosen such that the ester thus obtained has sufficient dispersion in water, compatibility with said constituents, does not form an emulsion with the reservoir oil and adsorbs sufficiently on the porous formation.
    Type: Grant
    Filed: June 25, 2001
    Date of Patent: July 3, 2007
    Assignees: Institut Francais du Petrole, Oleon N.V.
    Inventors: Annie Audibert Hayet, Jean-Francois Argillier, Daniel Longeron, Carine Dewattines, Michel Janssen
  • Method and fluid for checking the saturation of a formation in the immediate vicinity of a well
    Patent number: 6740625
    Abstract: The present invention relates to a method and a fluid for drilling or intervening in a well passing through a porous, permeable formation, wherein a water-based well fluid is circulating in said well. In this method, there is added to the fluid not only the conventional ingredients for such a fluid but also a maximum of 10 wt. % of a composition obtained from a grease or oil and an alcohol, with the chain lengths of the acid and alcohol parts being chosen such that the ester thus obtained has sufficient dispersion in water, compatibility with said ingredients, does not form an emulsion with the reservoir oil, and adsorbs sufficiently on the porous formation.
    Type: Grant
    Filed: July 28, 2000
    Date of Patent: May 25, 2004
    Assignees: Institut Francais du Petrole, Oleon NV
    Inventors: Annie Audibert, Jean-François Argillier, Daniel Longeron, Carine Dewattines, Michel Janssen
  • Method and fluid for controlling the saturation of a formation around a well
    Publication number: 20030178230
    Abstract: The present invention relates to a method and to a fluid for drilling or workover in a well running through a porous permeable formation, wherein a water-based well fluid circulates in said well. In the method, at most 3% by weight of a composition obtained from fat, or an oil, and an alcohol, is added to the fluid in addition to the conventional constituents for such a fluid, the chain lengths of the acid and alcohol parts being chosen such that the ester thus obtained has sufficient dispersion in water, compatibility with said constituents, does not form an emulsion with the reservoir oil and adsorbs sufficiently on the porous formation.
    Type: Application
    Filed: May 19, 2003
    Publication date: September 25, 2003
    Inventors: Annie Audibert Hayet, Jean-Francois Argillier, Daniel Longeron, Carine Dewattines, Michel Janssen