The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Apr. 27, 2010
Filed:
Jan. 26, 2007
Jesus Alberto Canas Triana, Macae, BR;
A. Ballard Andrews, Wilton, CT (US);
Marc Schneider, Terre Haute, IN (US);
Evie Freitas, Macae, BR;
Oliver C. Mullins, Ridgefield, CT (US);
Chengang Xian, Abu Dhabi, AE;
Andrew Carnegie, Beijing, CN;
Jamil Al-naser, Al-Ain, AE;
Jesus Alberto Canas Triana, Macae, BR;
A. Ballard Andrews, Wilton, CT (US);
Marc Schneider, Terre Haute, IN (US);
Evie Freitas, Macae, BR;
Oliver C. Mullins, Ridgefield, CT (US);
ChenGang Xian, Abu Dhabi, AE;
Andrew Carnegie, Beijing, CN;
Jamil Al-Naser, Al-Ain, AE;
Schlumberger Technology Corporation, Ridgefield, CT (US);
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.