Patents by Inventor Dingan (Dan) Zhang

Dingan (Dan) Zhang 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).

  • Methods and apparatus for characterization of petroleum fluids contaminated with drilling mud
    Patent number: 8805617
    Abstract: A method and system for characterizing formation fluids contaminated with drilling mud that compensates for the presence of such drilling mud. The operations that characterize formation fluids contaminated with drilling mud can be carried out in real-time. The operations also characterize a wide array of fluid properties of petroleum samples contaminated with drilling mud in a manner that compensates for the presence of drilling mud. The operations characterize the viscosity and density of petroleum samples contaminated with drilling mud at formation conditions in a manner that compensates for differences between formation conditions and flowline measurement conditions. The operations also derive live fluid density unaffected by contamination of mud filtrate based on a scaling coefficient dependent on measured gas-oil ratio of the formation fluid.
    Type: Grant
    Filed: May 6, 2009
    Date of Patent: August 12, 2014
    Assignee: Schlumberger Technology Corporation
    Inventors: Youxiang (Jullan) Zuo, Dingan (Dan) Zhang, Dong Chengli, Oliver C. Mullins, Michael O'Keefe
  • Methods and Apparatus for Characterization of Petroleum Fluids Contaminated with Drilling Mud
    Publication number: 20110088949
    Abstract: A method and system for characterizing formation fluids contaminated with drilling mud that compensates for the presence of such drilling mud. The operations that characterize formation fluids contaminated with drilling mud can be carried out in real-time. The operations also characterize a wide array of fluid properties of petroleum samples contaminated with drilling mud in a manner that compensates for the presence of drilling mud. The operations characterize the viscosity and density of petroleum samples contaminated with drilling mud at formation conditions in a manner that compensates for differences between formation conditions and flowline measurement conditions. The operations also derive live fluid density unaffected by contamination of mud filtrate based on a scaling coefficient dependent on measured gas-oil ratio of the formation fluid.
    Type: Application
    Filed: May 6, 2009
    Publication date: April 21, 2011
    Inventors: Youxiang (Jullan) Zuo, Dingan (Dan) Zhang, Dong Chengli, Oliver C. Mullins, Michael O'Keefe
  • Methods and apparatus for characterization of petroleum fluid and applications thereof
    Patent number: 7920970
    Abstract: An improved method and system for characterizing the compositional components of a hydrocarbon reservoir of interest and analyzing fluid properties of the reservoir of interest based upon its compositional components.
    Type: Grant
    Filed: September 11, 2008
    Date of Patent: April 5, 2011
    Assignee: Schlumberger Technology Corporation
    Inventors: Youxiang (Julian) Zuo, Moin Muhammad, Jiabao (Jack) Zhu, Dingan (Dan) Zhang
  • METHODS AND APPARATUS FOR CHARACTERIZATION OF PETROLEUM FLUID AND APPLICATIONS THEREOF
    Publication number: 20090192768
    Abstract: An improved method and system for characterizing the compositional components of a hydrocarbon reservoir of interest and analyzing fluid properties of the reservoir of interest based upon its compositional components.
    Type: Application
    Filed: September 11, 2008
    Publication date: July 30, 2009
    Applicant: SCHLUMBERGER TECHNOLOGY CORP.
    Inventors: YOUXIANG (JULIAN) ZUO, MOIN MUHAMMAD, JIABAO (JACK) ZHU, DINGAN (DAN) ZHANG