Patents by Inventor Srinivasan Jagannanthan

Srinivasan Jagannanthan 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: 11578588
    Abstract: Disclosed are systems and methods for processing broadband acoustic signals acquired by a plurality of acoustic sensors, using an array-signal-processing technique to compute fused-signal maps in the frequency domain for a plurality of frequency bins. In accordance with various embodiments, the fused-signal maps are combined across the frequency bins, with respective weightings that are based on eigenvalues of covariance matrices computed for the plurality of frequency bins. The combined maps can be used to locate an acoustic source in a wellbore.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: February 14, 2023
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Nam Nguyen, Yi Yang Ang, Rebecca Corina Jachmann, Yinghui Lu, Srinivasan Jagannanthan, Avinash Vinayak Taware
  • Patent number: 11402532
    Abstract: Disclosed are acoustic logging systems and methods that involve correlating broadband acoustic signals acquired by a plurality of acoustic sensors at multiple depths within a wellbore to compute covariance matrices and their eigenvalues in the frequency domain for a plurality of frequency bins. In accordance with various embodiments, acoustic sources are detected and located based on the eigenvalues viewed as a function of depth and frequency.
    Type: Grant
    Filed: July 12, 2016
    Date of Patent: August 2, 2022
    Assignee: Halliburton Energy Services, Inc.
    Inventors: Yi Yang Ang, Yinghui Lu, Avinash Vinayak Taware, Srinivasan Jagannanthan, Nam Nguyen
  • Publication number: 20200309981
    Abstract: Disclosed are acoustic logging systems and methods that involve correlating broadband acoustic signals acquired by a plurality of acoustic sensors at multiple depths within a wellbore to compute covariance matrices and their eigenvalues in the frequency domain for a plurality of frequency bins. In accordance with various embodiments, acoustic sources are detected and located based on the eigenvalues viewed as a function of depth and frequency.
    Type: Application
    Filed: July 12, 2016
    Publication date: October 1, 2020
    Inventors: Yi Yang Ang, Yinghui Lu, Avinash Vinayak Taware, Srinivasan Jagannanthan, Nam Nguyen
  • Publication number: 20180355712
    Abstract: Disclosed are systems and methods for processing broadband acoustic signals acquired by a plurality of acoustic sensors, using an array-signal-processing technique to compute fused-signal maps in the frequency domain for a plurality of frequency bins. In accordance with various embodiments, the fused-signal maps are combined across the frequency bins, with respective weightings that are based on eigenvalues of covariance matrices computed for the plurality of frequency bins. The combined maps can be used to locate an acoustic source in a wellbore.
    Type: Application
    Filed: July 12, 2016
    Publication date: December 13, 2018
    Inventors: Nam Nguyen, Yi Yang Ang, Rebecca Corina Jachmann, Yinghui Lu, Srinivasan Jagannanthan, Avinash Vinayak Taware