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:
Dec. 26, 2023

Filed:

Jan. 31, 2022
Applicant:

Saudi Arabian Oil Company, Dhahran, SA;

Inventors:

Jun Gao, Dhahran, SA;

Marwah Mufid AlSinan, Al Qatif, SA;

Hyung Tae Kwak, Dhahran, SA;

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
G01N 15/08 (2006.01); G01N 33/24 (2006.01); E21B 49/02 (2006.01); G01N 24/08 (2006.01); G01V 3/32 (2006.01);
U.S. Cl.
CPC ...
G01N 15/088 (2013.01); E21B 49/02 (2013.01); G01N 15/08 (2013.01); G01N 24/081 (2013.01); G01N 33/24 (2013.01); G01V 3/32 (2013.01);
Abstract

A method for determining the pore size distribution in a reservoir, including the steps: drilling a core sample out of the reservoir, determining a porosity distribution along the core sample, obtaining T-distributions at different saturation levels of the core sample with formation brine, performing time domain subtraction on the T-distributions to obtain T-distributions at all saturation levels, determining the pore throat size distribution along the core sample, determining first porosities from the T-distributions that correspond to second porosities of the pore throat size distribution for each saturation level, determining T-distributions at the first porosities from the T-distributions, determining pore throat sizes at the second porosities from the pore throat size distributions, plotting the pore throat sizes as function of the relaxation times Tto obtain the surface relaxation, and determining the pore size distribution of the reservoir.


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