Patents by Inventor Chetankumar Desai

Chetankumar Desai 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).

  • Method and apparatus for consistent and robust fitting in oil based mud filtrate contamination monitoring from multiple downhole sensors
    Patent number: 10316655
    Abstract: A method for performing contamination monitoring through estimation wherein measured data for optical density, gas to oil ratio, mass density and composition of fluid components are used to obtain plotting data and the plotting data is extrapolated to obtain contamination levels.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: June 11, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Youxiang Zuo, Adriaan Gisolf, Ryan Lee, Cosan Ayan, Hadrien Dumont, Kang Wang, Chetankumar Desai, Oliver Mullins, Beatriz Barbosa
  • Method and apparatus for water-based mud filtrate contamination monitoring in real time downhole water sampling
    Patent number: 10309885
    Abstract: A method for contamination monitoring includes measuring water based mud filtrate density and resistivity at downhole conditions, logging properties of a downhole fluid to find at least a resistivity and a density of a fluid sample at the downhole conditions, establishing a linear relationship between a water based mud filtrate conductivity at downhole conditions and the water based mud filtrate density at the downhole conditions, determining a density and a resistivity for native formation water, estimating a density for water based mud filtrate using the linear relationship between conductivity and density, and estimating a water based mud filtrate contamination.
    Type: Grant
    Filed: November 20, 2013
    Date of Patent: June 4, 2019
    Assignee: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Youxiang Zuo, Adriaan Gisolf, Julian Pop, Oliver Mullins, Chetankumar Desai
  • Method And Apparatus For Water-Based Mud Filtrate Contamination Monitoring In Real Time Downhole Water Sampling
    Publication number: 20150135814
    Abstract: A method and apparatus for performing water based mud-filtrate contamination monitoring in real time through evaluation of downhole water sampling.
    Type: Application
    Filed: November 20, 2013
    Publication date: May 21, 2015
    Applicant: Schlumberger Technology Corporation
    Inventors: Youxiang Zuo, Adriaan Gisolf, Julian Pop, Oliver Mullins, Chetankumar Desai
  • Method And Apparatus For Consistent And Robust Fitting In Oil Based Mud Filtrate Contamination Monitoring From Multiple Downhole Sensors
    Publication number: 20150142317
    Abstract: A method for performing contamination monitoring through estimation wherein measured data for optical density, gas to oil ratio, mass density and composition of fluid components are used to obtain plotting data and the plotting data is extrapolated to obtain contamination levels.
    Type: Application
    Filed: November 20, 2013
    Publication date: May 21, 2015
    Applicant: Schlumberger Technology Corporation
    Inventors: Youxiang Zuo, Adriaan Gisolf, Ryan Lee, Cosan Ayan, Hadrien Dumont, Kang Wang, Chetankumar Desai, Oliver Mullins, Beatriz Barbosa