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:
Jun. 27, 2017
Filed:
Oct. 21, 2015
Schlumberger Technology Corporation, Sugar Land, TX (US);
John Ratulowski, Edmonton, CA;
Shahnawaz Molla, Edmonton, CA;
Vincent Sieben, Edmonton, CA;
Farshid Mostowfi, Edmonton, CA;
Shawn Taylor, Edmonton, CA;
Christopher Harrison, Newton, MA (US);
Shunsuke Fukagawa, Arlington, MA (US);
Elizabeth Smythe, Cambridge, MA (US);
Matthew Sullivan, Westwood, MA (US);
John Meier, Boston, MA (US);
SCHLUMBERGER TECHNOLOGY CORPORATION, Sugar Land, TX (US);
Abstract
A method for determining an asphaltene onset condition of a crude oil is provided. The method includes receiving a crude oil within a downhole tool inside a well and taking a first measurement of an optical property of the received crude oil. The method also includes lowering the pressure or temperature of the crude oil after taking the first measurement of the optical property to cause aggregation of asphaltenes in the crude oil, and then separating aggregated asphaltenes from the crude oil. Further, the method includes taking a second measurement of the optical property of the crude oil within the downhole tool after separating aggregated asphaltenes from the crude oil and determining an asphaltene onset condition of the crude oil through comparison of the first and second measurements of the optical property. Additional methods, systems, and devices are also disclosed.