Patents by Inventor Philip Savundararaj

Philip Savundararaj 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).

  • Petrophysically regularized time domain NMR inversion
    Patent number: 10353107
    Abstract: A petrophysically regularized time domain nuclear magnetic resonance (NMR) inversion includes using an NMR tool to acquire NMR data and inverting the acquired NMR data in a time domain using petrophysical constraints. The inverted NMR data is analyzed. The petrophysical constraints may be identified by: determining a number of porobodons to seek, defining a plurality of zones in which only a subset of porobodon sets is present, and stacking all NMR echoes in each zone satisfying discriminators. The number of porobodons to seek may be based on knowledge of core samples, logs, and NMR sensitivity. The discriminator logs may be logs sensitive to porosity partitioning. A computing system having a processor, a memory, and a program stored in memory may be configured to perform the method. The system may be conveyed downhole on a wireline, a while-drilling drill string, a coiled tubing, a slickline, or a wired drill pipe.
    Type: Grant
    Filed: October 31, 2012
    Date of Patent: July 16, 2019
    Assignees: SCHLUMBERGER TECHNOLOGY CORPORATION, SAUDI ARABIAN OIL COMPANY
    Inventors: David F. Allen, George Bordakov, Steve F. Crary, Philip Savundararaj, Ramsin Eyvazzadeh, Edward Alan Clerke, Johannes J. Buiting, Paul Smith, Jim Funk
  • Petrophysically Regularized Time Domain NMR Inversion
    Publication number: 20140285190
    Abstract: A petrophysically regularized time domain nuclear magnetic resonance (NMR) inversion includes using an NMR tool to acquire NMR data and inverting the acquired NMR data in a time domain using petrophysical constraints. The inverted NMR data is analyzed. The petrophysical constraints may be identified by: determining a number of porobodons to seek, defining a plurality of zones in which only a subset of porobodon sets is present, and stacking all NMR echoes in each zone satisfying discriminators. The number of porobodons to seek may be based on knowledge of core samples, logs, and NMR sensitivity. The discriminator logs may be logs sensitive to porosity partitioning. A computing system having a processor, a memory, and a program stored in memory may be configured to perform the method. The system may be conveyed downhole on a wireline, a while-drilling drill string, a coiled tubing, a slickline, or a wired drill pipe.
    Type: Application
    Filed: October 31, 2012
    Publication date: September 25, 2014
    Inventors: David F. Allen, George Bordakov, Steve F. Crary, Philip Savundararaj, Ramsin Eyvazzadeh, Edward Alan Clerke, Johannes J. Buiting, Paul Smith, Jim Funk