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:
Feb. 19, 2013

Filed:

Jul. 13, 2009
Applicants:

Siddhartha F. Lunkad, Pune, IN;

Balasundaram Balaraman, Pune, IN;

Abhimanyu Deshpande, Pune, IN;

Christopher L. Gordon, Roanoke, TX (US);

Inventors:

Siddhartha F. Lunkad, Pune, IN;

Balasundaram Balaraman, Pune, IN;

Abhimanyu Deshpande, Pune, IN;

Christopher L. Gordon, Roanoke, TX (US);

Assignee:
Attorneys:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
G01N 13/00 (2006.01); E21B 47/10 (2012.01);
U.S. Cl.
CPC ...
Abstract

Methods of determining the wettability of a surface under predetermined conditions, wherein the surface simulates or is a downhole surface for use in an oil or gas operation. The methods include the steps of: (A) contacting the surface with at least a first fluid; and then (B) observing the surface for the presence or absence of a marker to determine the wettability of the surface. According to a first aspect of the inventions, the first fluid comprises a first marker, and the step of contacting is under first predetermined conditions. This aspect also includes the additional step of contacting the surface with a second fluid comprising a second marker. According to a second aspect of the inventions, the step of contacting the surface with the first fluid is under predetermined conditions, and the surface is contacted with a second fluid comprising a second marker. According to a third aspect of the inventions, the first fluid comprises a first marker, the surface is contacted with a second fluid comprising a second marker, and both steps of contacting are performed under predetermined conditions.


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