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:
Oct. 02, 2018
Filed:
May. 01, 2014
Schlumberger Technology Corporation, Sugar Land, TX (US);
Yi-Qiao Song, Newton Center, MA (US);
Soumyajit Mandal, Cleveland, OH (US);
SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US);
Abstract
Methods and systems for identifying a chemical species within a substance using nuclear quadrupole resonance (NQR) are described herein. One method includes applying a number of NQR perturbation-detection pulse sequences to the substance. Each perturbation-detection pulse sequence includes a perturbation segment applied at a perturbation frequency and a detection segment applied at a second different frequency. As the sequences are applied, the perturbation frequency, the second frequency, or both are varied for each pulse sequence. The method also includes applying a number of NQR reference pulse sequences to the substance at a reference frequency. The reference frequency is varied for each pulse sequence. A chemical species is identified within the substance by comparing (i) a set of NQR signals generated by the perturbation-detection pulse sequences with (ii) a reference set of NQR signals generated by the reference pulse sequences.