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:
May. 24, 2022
Filed:
Sep. 07, 2017
Weatherford Technology Holdings, Llc, Houston, TX (US);
Michael C. Ramsey, Round Rock, TX (US);
Weatherford Technology Holdings, LLC, Houston, TX (US);
Abstract
An artificial lift system can include an actuator operable to reciprocate a rod string in the well, the actuator including a piston reciprocably disposed in a cylinder, and a piston rod connected to the piston, and a rod rotator that continuously rotates the piston rod relative to the cylinder as the piston displaces in a longitudinal direction relative to the cylinder. A method of rotating a rod string can include connecting the rod string to a piston rod of an actuator, longitudinally reciprocating the piston rod relative to a cylinder of the actuator and a mandrel of a rod rotator, and rotating the piston rod relative to the mandrel in response to the reciprocating, the mandrel being disposed at least partially within the piston rod during the rotating. A rod rotator can include a mandrel having a helical external profile configured to attach to a cylinder of a hydraulic actuator, an internal profile complementarily shaped relative to the external profile, and a one-way clutch.