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:
Oct. 26, 2021
Filed:
Sep. 28, 2018
Ardyne Holdings Limited, Aberdeen, GB;
George Telfer, Aberdeen, GB;
Michael Wardley, Aberdeen, GB;
James Linklater, Aberdeen, GB;
Wojciech Buczak, Aberdeen, GB;
ARDYNE HOLDINGS LIMITED, Aberdeen, GB;
Abstract
Method and apparatus for removing a section of well tubing. The well tubing () is milled in an upward direction on a hydraulic tensioning device () which maintains a constant load on the section mill so that long sections of tubing can be removed in a near continuous procedure on a single trip into the well. The hydraulic device includes an indicator () to provide a signal as the device nears each end of a stroke to inform a user that: the section mill is about to bottom out and the work string needs to be raised to extend the device; and the device is fully extended and can begin another stroke. Embodiments are described for use in a rigless well abandonment procedure.