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:
Jan. 14, 2025

Filed:

Mar. 30, 2022
Applicant:

Saudi Arabian Oil Company, Dhahran, SA;

Inventors:

Weihua Wang, Dhahran, SA;

Yufeng Cui, Beijing, CN;

Hasan Algheryafi, Dhahran, SA;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01V 3/32 (2006.01); E21B 49/02 (2006.01); G01N 15/08 (2006.01); G01N 24/08 (2006.01);
U.S. Cl.
CPC ...
G01V 3/32 (2013.01); E21B 49/02 (2013.01); G01N 15/088 (2013.01); G01N 24/081 (2013.01);
Abstract

A system and method for performing a reservoir evaluation are disclosed. The method includes obtaining a nuclear magnetic resonance (NMR) dataset for a plurality of samples and obtaining an NMR log for a wellbore penetrating a reservoir. The method further includes determining a rock facies description for each sample, determining an NMR transverse relaxation time (NMR T) distribution from the NMR dataset, and determining a set of parameters characterizing the NMR Tdistribution based on one or more predetermined parameters. The method still further includes identifying a plurality of NMR facies based, at least in part, on the set of parameters for each sample, determining a transformation that maps a subset of rock facies to a subset of the plurality of NMR facies, and performing the reservoir evaluation based, at least in part, on applying the transformation to the NMR log.


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