Patents by Inventor Xiaomin Zhao

Xiaomin Zhao 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).

  • Extending the coverage of VSP/CDP imaging by using first-order downgoing multiples
    Patent number: 8547794
    Abstract: First-order free-surface multiples recorded in VSP data or reverse VSP data are processed using VSP/CDP method to produce an image of the subsurface. This image produces a larger coverage than that obtained in 3-C 3-D processing of reflection data acquired in the VSP.
    Type: Grant
    Filed: April 8, 2010
    Date of Patent: October 1, 2013
    Assignee: Baker Hughes Incorporated
    Inventors: Jitendra S. Gulati, Xiaomin Zhao, Francis D. Doherty, Min Lou
  • Sub-salt reflection tomography and imaging by walkaway VSP survey
    Patent number: 7911878
    Abstract: A walkaway VSP survey is carried out with receivers located in a borehole near the base salt. Reflection tomographic inversion of data from the walkaway VSP is used to derive a velocity model for the subsurface and may be used for imaging of sub-salt reflections.
    Type: Grant
    Filed: April 5, 2007
    Date of Patent: March 22, 2011
    Assignee: Baker Hughes Incorporated
    Inventors: Xiaomin Zhao, Min Lou, James C. Jackson
  • Extending the Coverage of VSP/CDP Imaging by Using First-Order Downgoing Multiples
    Publication number: 20100271903
    Abstract: First-order free-surface multiples recorded in VSP data or reverse VSP data are processed using VSP/CDP method to produce an image of the subsurface. This image produces a larger coverage than that obtained in 3-C 3-D processing of reflection data acquired in the VSP.
    Type: Application
    Filed: April 8, 2010
    Publication date: October 28, 2010
    Applicant: Baker Hughes Incorporated
    Inventors: Jitendra S. Gulati, Xiaomin Zhao, Francis D. Doherty, Min Lou
  • Sub-salt reflection tomography and imaging by walkaway VSP survey
    Patent number: 7751279
    Abstract: A walkaway VSP survey is carried out with receivers located in a borehole near the base salt. Reflection tomographic inversion of data from the walkaway VSP is used to derive a velocity model for the subsurface and may be used for imaging of sub-salt reflections.
    Type: Grant
    Filed: April 5, 2007
    Date of Patent: July 6, 2010
    Assignee: Baker Hughes Incorporated
    Inventors: Xiaomin Zhao, Min Lou, James C. Jackson
  • Vector migration of 1st order free-surface related downgoing multiples from VSP data
    Patent number: 7693006
    Abstract: 1st order free-surface multiples recorded in VSP data or reverse VSP data are processed using a 3-C 3-D vector migration method to produce an image of the subsurface. This image produces a larger coverage than that obtained in 3-C 3-D processing of reflection data acquired in the VSP.
    Type: Grant
    Filed: January 15, 2009
    Date of Patent: April 6, 2010
    Assignee: Baker Hughes Incorporated
    Inventors: Min Lou, Xiaomin Zhao, Francis D. Doherty, James C. Jackson
  • Vector Migration of 1st Order Free-Surface Related Downgoing Multiples from VSP Data
    Publication number: 20090122646
    Abstract: 1st order free-surface multiples recorded in VSP data or reverse VSP data are processed using a 3-C 3-D vector migration method to produce an image of the subsurface. This image produces a larger coverage than that obtained in 3-C 3-D processing of reflection data acquired in the VSP.
    Type: Application
    Filed: January 15, 2009
    Publication date: May 14, 2009
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Min Lou, Xiaomin Zhao, Francis D. Doherty, James C. Jackson
  • Vector migration of 1st order free-surface related downgoing multiples from VSP data
    Patent number: 7508736
    Abstract: 1storder free-surface multiples recorded in VSP data or reverse VSP data are processed using a 3-C 3-D vector migration method to produce an image of the subsurface. This image produces a larger coverage than that obtained in 3-C 3-D processing of reflection data acquired in the VSP.
    Type: Grant
    Filed: March 9, 2007
    Date of Patent: March 24, 2009
    Assignee: Baker Hughes Incorporated
    Inventors: Min Lou, Xiaomin Zhao, Francis D. Doherty, James C. Jackson
  • Vector Migration of 1st Order Free-Surface Related Downgoing Multiples from VSP Data
    Publication number: 20080221796
    Abstract: 1st order free-surface multiples recorded in VSP data or reverse VSP data are processed using a 3-C 3-D vector migration method to produce an image of the subsurface. This image produces a larger coverage than that obtained in 3-C 3-D processing of reflection data acquired in the VSP.
    Type: Application
    Filed: March 9, 2007
    Publication date: September 11, 2008
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Min Lou, Xiaomin Zhao, Francis D. Doherty, James C. Jackson
  • Sub-Salt Reflection Tomography and Imaging by Walkaway VSP Survey
    Publication number: 20070258324
    Abstract: A walkaway VSP survey is carried out with receivers located in a borehole near the base salt. Reflection tomographic inversion of data from the walkaway VSP is used to derive a velocity model for the subsurface and may be used for imaging of sub-salt reflections.
    Type: Application
    Filed: April 5, 2007
    Publication date: November 8, 2007
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Xiaomin Zhao, Min Lou, James Jackson
  • Sub-Salt Reflection Tomography and Imaging by Walkaway VSP Survey
    Publication number: 20070259432
    Abstract: A walkaway VSP survey is carried out with receivers located in a borehole near the base salt. Reflection tomographic inversion of data from the walkaway VSP is used to derive a velocity model for the subsurface and may be used for imaging of sub-salt reflections.
    Type: Application
    Filed: April 5, 2007
    Publication date: November 8, 2007
    Applicant: BAKER HUGHES INCORPORATED
    Inventors: Xiaomin Zhao, Min Lou, James Jackson
  • Method and apparatus for seismically surveying an earth formation in relation to a borehole
    Patent number: 6601671
    Abstract: The present invention provides a new and unique method, sensor, and apparatus for performing a seismic survey of an earth formation in relation to a borehole. The method includes arranging at least one strain seismic sensor in conjunction with a borehole structure, and mechanically coupling the borehole structure to the borehole to allow seismic data to be accurately transferred to the sensor. The sensor is preferably a fiber optic sensor, including a Fiber Bragg Grating which may be coupled to a relevant borehole structure in a number of ways.
    Type: Grant
    Filed: July 10, 2000
    Date of Patent: August 5, 2003
    Assignee: Weatherford/Lamb, Inc.
    Inventors: Xiaomin Zhao, Francis X. Bostick, Jian-Qun Wu, Daniel L. Gysling, Peter C. Ogle, Allen R. Davis, Alan D. Kersey, Bob A. Hardage