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:
Feb. 23, 2021
Filed:
Jun. 15, 2017
Itrec B.v., Schiedam, NL;
Pieter Dirk Melis Van Duivendijk, Schiedam, NL;
Diederick Bernardus Wijning, Schiedam, NL;
Nicolaas Thijs Pieter Max, Schiedam, NL;
Jasper Hendrik Frank Bakker, Schiedam, NL;
Joop Roodenburg, Schiedam, NL;
Adriaan Van Swieten, Schiedam, NL;
ITREC B.V., Schiedam, NL;
Abstract
A method for drilling a wellbore, wherein use is made of a top drive device including: multiple electric top drive motors each having a rotor, a transmission to which the rotors of the multiple top drive motors are operatively connected, a rotary stem or quill operatively connected to the transmission allowing the rotary stem or quill to be driven by the top drive motors in order to impart rotary torque to a drilling tubulars string connected to the rotary stem or quill of the top drive device, wherein at least one, preferably each, of the top drive motors has an operable clutch device configured to selectively connect and disconnect upon command the rotor relative to the transmission. The method includes providing a command to the one or more top drive motors having a clutch so as to selectively connect and disconnect the rotor thereof relative to the transmission by operating the clutch.