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:
Jul. 29, 2025
Filed:
Feb. 14, 2023
Helmerich & Payne Technologies, Llc, Tulsa, OK (US);
Zackary Whitlow, Denver, CO (US);
Ngoc-Ha Dao, Meyzieu, FR;
Helmerich & Payne Technologies, LLC, Tulsa, OK (US);
Abstract
Embodiments use a torque-and-drag model or fluid friction model for predicting a zero tension or zero pressure for various operations such as rotary drilling and sliding, in vertical, curve, and lateral sections of a well, without using a downhole sensor. By adjusting coefficients of friction, the model can be used to match the predicted hook load, torque, and pressure values with the measured hook load, torque, and pressure values, respectively. A control system can thus determine more accurate zero values for weight on bit and/or differential pressure, which can be used to maintain, alter, plan, modify, and/or predict drilling parameters and conditions.