Patents by Inventor Evie Freitas

Evie Freitas 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 analyzing fluid properties of emulsions using fluorescence spectroscopy
    Patent number: 7705982
    Abstract: This relates to methods and apparatus for analyzing samples by fluorescence spectroscopy. In one embodiment, the methods and apparatus use a fluorescence detection unit (FDU) of a composition fluid analyzer (CFA™) module to detect variations in fluid properties (gradients) within an oil bearing column. Some embodiments enable efficient downhole fluid analysis in heavy oils where water/oil emulsions are present (water in dispersed phase and oil in the continuous phase). The principles described herein may also be applied when there are fine particles in the oil such as from unconsolidated sands.
    Type: Grant
    Filed: January 26, 2007
    Date of Patent: April 27, 2010
    Assignee: Schlumberger Technology Corporation
    Inventors: Jesus Alberto Canas Triana, A. Ballard Andrews, Marc Schneider, Evie Freitas, Oliver C. Mullins, ChenGang Xian, Andrew Carnegie, Jamil Al-Naser
  • METHODS AND APPARATUS FOR ANALYZING FLUID PROPERTIES OF EMULSIONS USING FLUORESCENCE SPECTROSCOPY
    Publication number: 20080037006
    Abstract: This relates to methods and apparatus for analyzing samples by fluorescence spectroscopy. In one embodiment, the methods and apparatus use a fluorescence detection unit (FDU) of a composition fluid analyzer (CFA™) module to detect variations in fluid properties (gradients) within an oil bearing column. Some embodiments enable efficient downhole fluid analysis in heavy oils where water/oil emulsions are present (water in dispersed phase and oil in the continuous phase). The principles described herein may also be applied when there are fine particles in the oil such as from unconsolidated sands.
    Type: Application
    Filed: January 26, 2007
    Publication date: February 14, 2008
    Applicant: SCHLUMBERGER TECHNOLOGY CORPORATION
    Inventors: Jesus Alberto Canas Triana, A. Ballard Andrews, Marc Schneider, Evie Freitas, Oliver C. Mullins, ChengGang Xian, Andrew Carnegie, Jamil Al-Naser