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:
Jun. 09, 2026
Filed:
Jun. 12, 2025
Schlumberger Technology Corporation, Sugar Land, TX (US);
Wei Chen, Katy, TX (US);
Ahmed Abuelaish, Sugar Land, TX (US);
Yuelin Shen, Katy, TX (US);
Julien Converset, Katy, TX (US);
Zhengxin Zhang, Katy, TX (US);
Crispin Chatar, Katy, TX (US);
Carlos Enrique Sanguinetti, Sugar Land, TX (US);
May Alonge, Georgetown, GY;
Fernando Gallo Zapata, Sugar Land, TX (US);
Aquiles Jose Navarro Duarte, Neuquen, NZ;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
An embodiment of a method includes receiving measurements from a drilling system during a transient period of a drilling operation for a wellbore. The measurements include measurements of annulus pressure and drilling fluid flow rate, and the transient period is a period of time when the drilling fluid flow rate is ramped up or down. In addition, the method includes training an annulus pressure model that relates an annulus frictional pressure drop over a range of drilling fluid flow rates based at least in part on the measurements. Further, the method includes controlling an annulus backpressure of the wellbore by use of the annulus pressure model after the transient period.