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:
Sep. 12, 2017
Filed:
Oct. 30, 2013
Schlumberger Technology Corporation, Sugar Land, TX (US);
A. Ballard Andrews, Wilton, CT (US);
Soraya S. Betancourt, Katy, TX (US);
Andrew E. Pomerantz, Lexinton, MA (US);
Soumyajit Mandal, Cambridge, MA (US);
Yi-Qiao Song, Newton, MA (US);
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A formation fluid sample is analyzed using NMR spectroscopy to obtain a NMR spectrum. The NMR spectrum is then analyzed to find evidence of the amount of olefins present in the sample. The amount of olefins present in the sample can then be correlated to the level of contamination of the sample. In one embodiment, aH chemical shift of between substantially 4.5 and 6 ppm is used to identify olefins present in the sample. In another embodiment, aH chemical shift of substantially 1.9 to 2.1 ppm is used to identify olefins present in the sample. The NMR spectral equipment can be located uphole or downhole.