Patents by Inventor Chunquan Yu

Chunquan Yu 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).

  • Layered linear inversion techniques for locating microseismic activity
    Patent number: 9939541
    Abstract: A method for locating a microseismic event in a subsurface formation, in some embodiments, comprises: receiving a microseismic signal at a detector; obtaining a velocity model representative of the subsurface formation, the velocity model comprising multiple velocity layers; estimating, for each of the multiple velocity layers in the subsurface formation, a microseismic event location and a microseismic event origin time; and selecting one of the estimated locations and times using a parameter of the microseismic signal received at the detector.
    Type: Grant
    Filed: January 9, 2015
    Date of Patent: April 10, 2018
    Assignee: Chevron U.S.A. Inc.
    Inventors: Chang Li, Sudipta Sarkar, Chunquan Yu
  • Layered Linear Inversion Techniques For Locating Microseismic Activity
    Publication number: 20160202371
    Abstract: A method for locating a microseismic event in a subsurface formation, in some embodiments, comprises: receiving a microseismic signal at a detector; obtaining a velocity model representative of the subsurface formation, the velocity model comprising multiple velocity layers; estimating, for each of the multiple velocity layers in the subsurface formation, a microseismic event location and a microseismic event origin time; and selecting one of the estimated locations and times using a parameter of the microseismic signal received at the detector.
    Type: Application
    Filed: January 9, 2015
    Publication date: July 14, 2016
    Applicant: Chevron U.S.A. Inc.
    Inventors: Chang Li, Sudipta Sarkar, Chunquan Yu