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:
Jan. 26, 2016
Filed:
Aug. 03, 2012
Applicants:
Boqin Sun, Concord, CA (US);
Emmanuel Toumelin, Houston, TX (US);
Inventors:
Boqin Sun, Concord, CA (US);
Emmanuel Toumelin, Houston, TX (US);
Assignee:
CHEVRON U.S.A. INC., San Ramon, CA (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01V 3/14 (2006.01);
U.S. Cl.
CPC ...
G01V 3/14 (2013.01);
Abstract
A nuclear magnetic resonance relaxation time cutoff between results for a bound-water index of rock and a free-fluid index of the rock is determined. The determination is made based on measured and predicted values for permeability and/or wettability over a set of core plugs. The determination does not require a nuclear magnetic resonance operation performed on the core plugs under irreducible water saturation.