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.

Date of Patent:
Oct. 01, 2019

Filed:

Jul. 10, 2018
Applicant:

Saudi Arabian Oil Company, Dhahran, SA;

Inventors:

Sebastian Csutak, Houston, TX (US);

Weichang Li, Katy, TX (US);

Angelo Sampaolo, Houston, TX (US);

Gregory Ham, Houston, TX (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 29/02 (2006.01); G01N 29/22 (2006.01); G01N 29/24 (2006.01); G01V 1/44 (2006.01); E21B 49/08 (2006.01); G01N 29/46 (2006.01); G01N 21/17 (2006.01);
U.S. Cl.
CPC ...
G01N 29/022 (2013.01); E21B 49/081 (2013.01); G01N 21/1702 (2013.01); G01N 29/228 (2013.01); G01N 29/2418 (2013.01); G01N 29/46 (2013.01); G01V 1/44 (2013.01); G01N 2021/1704 (2013.01);
Abstract

A downhole system includes a quartz enhanced photoacoustic spectrometer (QEPAS) configured to be positioned within a wellbore formed in a subterranean zone of a hydrocarbon formation, a sampling system coupled to the QEPAS, and a computer system connected to the QEPAS. The sampling system is configured to be positioned in the wellbore and obtain a sample of a wellbore fluid at a downhole location in the subterranean zone. The QEPAS is configured to spectroscopically scan the sample and to determine a plurality of quantities of a corresponding plurality of hydrocarbons in the same. The computer system includes one or more processors to perform operations including receiving the plurality of quantities of the plurality of hydrocarbons in the sample and determining a plurality of ratios, where each ratio is a ratio of one of the plurality of hydrocarbons with another of the plurality of hydrocarbons.


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