Patents by Inventor Claude Gras

Claude Gras 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).

  • Process for the detection of heterogeneities and/or for the determination of petrophysical characteristics of geological strata of a medium to be explored
    Patent number: 4864545
    Abstract: Process for the detection of heterogeneities of a medium. It is defined in that logs of the attenuation of the shear waves and STONELEY waves are produced, the variations of each attenuation log in relation to a mean value are determined, and then the variations are compared with one another in such a manner as to determine the nature of the heterogeneity or of the petrophysical characteristic which has produced these variations. Application in particular in the area of oil and more particularly in the exploration of a medium. FIG. 9.
    Type: Grant
    Filed: December 5, 1986
    Date of Patent: September 5, 1989
    Assignee: Societe Nationale Elf Aquitaine (Production)
    Inventors: Claude Gras, Patricia Arditty, Philippe Staron