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:
Apr. 12, 2011
Filed:
Aug. 23, 2010
Larry G. Keast, Houston, TX (US);
James Strickland, Houston, TX (US);
Alan Shem, Houston, TX (US);
Other;
Abstract
A method for using a top drive is disclosed herein. The method can include: actuating a motor to provide power to the top drive, thereby rotating a stem with a saver sub mounted to a top drive housing having a bearing disposed about the rotatable stem; grabbing, lifting, and positioning tubulars using an elevator; and suspending weight of the top drive to prevent damage to threads of the tubulars during threadable engagement and disengagement of the tubulars using an airbag of an airlift thread compensator. The method can further include: positioning a torque wrench assembly along the tubulars for connecting the tubulars using a hydraulic cylinder disposed inside a torque supporting telescoping tubes; and movably positioning a single hollow cylinder rod of the hydraulic cylinder to extend into a first and second protected area, thereby preventing axial movement of a flexible hose during operation of the torque wrench assembly.