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:
Nov. 28, 2023

Filed:

Nov. 12, 2020
Applicant:

Saudi Arabian Oil Company, Dhahran, SA;

Inventors:

Chao Liu, Brookshire, TX (US);

Dung Phan, Brookshire, TX (US);

Katherine Hull, Houston, TX (US);

Younane Abousleiman, Norman, OK (US);

Assignee:
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 47/06 (2012.01); G06F 30/10 (2020.01); G01N 33/24 (2006.01); G01V 5/12 (2006.01); G01V 99/00 (2009.01);
U.S. Cl.
CPC ...
E21B 47/06 (2013.01); G01N 33/24 (2013.01); G01V 5/12 (2013.01); G01V 99/005 (2013.01); G06F 30/10 (2020.01);
Abstract

Methods for determining an in-situ pore pressure in a formation rock may include acquiring well log data, calculating a cation-exchange capacity, calculating a mole fraction of fixed charges using the cation-exchange capacity, determining a formation temperature, calculating the in-situ pore pressure, outputting the in-situ pore pressure of the formation rock, and using the in-situ pore pressure in a wellbore stability model to monitor and maintain stability of the formation rock. Corresponding electronic devices may include a computer processor coupled to at least one logging tool, wherein the logging tool is configured to acquire well log data in a formation rock. Non-transitory computer storage mediums may include program instructions, that when executed, may be configured to perform the methods for determining an in-situ pore pressure in a formation rock.


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