Patents by Inventor Frédéric Robail

Frédéric Robail 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).

  • Patent number: 6366859
    Abstract: Method of detecting breaks in logging signals consisting of logs of different kinds recorded as a function of depth, of the type consisting in selecting a portion from each of the said logs in such a way that all the selected portions have a same depth interval in common, one of the selected portions being regarded as reference portion; selecting a parent wavelet function and constructing, from the said parent function, a family of wavelet analysis functions dependent on spatial frequency and on depth, the said method being characterized in that it furthermore consists in calculating, for each portion of log selected and for each depth datum, the absolute value of the mean gradient of the characteristic quantity of the wavelet transform for the various spatial analysis frequencies; selecting, for each portion of log processed, the peaks of the absolute value of the mean gradient of the characteristic quantity.
    Type: Grant
    Filed: May 8, 2000
    Date of Patent: April 2, 2002
    Assignee: Elf Exploration Production
    Inventors: Philippe Rabiller, Frédéric Robail