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. 15, 2019

Filed:

May. 31, 2016
Applicant:

Multi-chem Group, Llc, San Angelo, TX (US);

Inventors:

Kai He, Houston, TX (US);

Liang Xu, The Woodlands, TX (US);

Paul Lord, Cypress, TX (US);

Assignee:

Multi-Chem Group, LLC, Houston, TX (US);

Attorneys:
Primary Examiner:
Int. Cl.
CPC ...
E21B 43/267 (2006.01); E21B 43/26 (2006.01); C09K 8/68 (2006.01); C09K 8/88 (2006.01); C09K 8/54 (2006.01); C09K 8/60 (2006.01); C09K 8/80 (2006.01); G01N 21/25 (2006.01);
U.S. Cl.
CPC ...
C09K 8/68 (2013.01); C09K 8/54 (2013.01); C09K 8/602 (2013.01); C09K 8/80 (2013.01); C09K 8/882 (2013.01); E21B 43/26 (2013.01); E21B 43/267 (2013.01); G01N 21/25 (2013.01); C09K 2208/12 (2013.01); C09K 2208/28 (2013.01); C09K 2208/32 (2013.01);
Abstract

Systems and methods for treating subterranean formations including quantifying additive concentrations. Certain of those methods include; introducing a fluid including an aqueous base fluid and a friction reducer into a wellbore penetrating of a subterranean formation at a pressure sufficient to create or enhance one or more fractures within the subterranean formation; recovering a portion of the fluid from the wellbore; adding a reactive agent to a sample of the portion of the fluid that has been recovered from the wellbore, where the reactive agent reacts with the friction reducer to form a photo-detectable compound in the sample; measuring a light absorbance of the sample at a selected wavelength of light; and using the measured absorbance and a calibration curve for the selected wavelength of light to determine the concentration of the friction reducer in the fluid that has been recovered from the wellbore.


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