Patents by Inventor Dong Chengli

Dong Chengli 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