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:
Sep. 15, 2026
Filed:
Feb. 05, 2024
Schlumberger Technology Corporation, Sugar Land, TX (US);
Rongbing Chen, Beijing, CN;
Gang Xu, Beijing, CN;
Ji Tang Liu, Beijing, CN;
Jianjun Yang, Beijing, CN;
Schlumberger Technology Corporation, Sugar Land, TX (US);
Abstract
A method of analyzing torque and drag of a drill string in a wellbore includes receiving wellbore data including a trajectory of the wellbore, and receiving drill string data for the drill string, at least a portion of the drill string including an inner string positioned inside of the drill string. The method includes generating a virtual wellbore associated with the inner string based on an inner diameter of the drill string and based on the trajectory of the wellbore, and determining a set of inner forces for the inner string including an axial force based on the weight of the inner string and a set of contact forces between the inner string and the virtual wellbore. The method includes identifying a set of normal forces between the drill string and the wellbore based on simulating the inner forces as applied forces to the drill string.