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. 25, 2025

Filed:

Sep. 02, 2020
Applicant:

Schlumberger Technology Corporation, Sugar Land, TX (US);

Inventors:

Shahnawaz Hossain Molla, Cambridge, MA (US);

Maneesh Pisharat, Aberdeen, GB;

Yujian Wu, Dove, NH (US);

Farshid Mostowfi, Lexington, MA (US);

Oscar Eduardo Torres Jaimes, Houston, TX (US);

Assignee:
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 49/08 (2006.01); E21B 21/06 (2006.01); E21B 49/00 (2006.01); G01N 33/28 (2006.01);
U.S. Cl.
CPC ...
E21B 49/0875 (2020.05); E21B 21/067 (2013.01); E21B 49/005 (2013.01); E21B 49/084 (2013.01); E21B 49/086 (2013.01); E21B 49/088 (2013.01); G01N 33/2823 (2013.01); E21B 2200/20 (2020.05); E21B 2200/22 (2020.05);
Abstract

Methods (and related apparatus) include obtaining data regarding a measured property. The measured property includes an amount of each of predetermined hydrocarbons in a gas sample extracted from drilling fluid exiting a wellbore having a hydrocarbon resource. An unknown characteristic of an investigated fluid property of the hydrocarbon resource is predicted utilizing the obtained input data and one or more predetermined models each built via statistical classification and regression analysis of a preexisting database containing records. Each record includes known characteristics of fluid properties of a different one of known reservoir fluids. The fluid properties include the investigated fluid property and the measured property. The investigated fluid property includes a fluid type of the hydrocarbon resource, an amount of at least one additional hydrocarbon, gas-oil ratio, or stock tank oil density.


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