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, 2022
Filed:
Sep. 28, 2018
Ardyne Holdings Limited, Aberdeen, GB;
Michael Wardley, Aberdeen, GB;
ARDYNE HOLDINGS LIMITED, Aberdeen, GB;
Abstract
Apparatus () and method for removing a section of well tubing. A work string including a hydraulic tensioning device () and a section mill () a run in a rigless arrangement to provide continuous upward milling of the tubing () by raising the work string at a desired rate of progress. The hydraulic tensioning device () has a lower end () moveable longitudinally relative to the work string by application of fluid pressure in the work string to apply a weight on the section mill. The hydraulic tensioning device includes a self-correcting mechanism () to maintain the lower end at a position between a fully extended position and a fully retracted position to provide continuous milling of the tubing by the section mill at a milling rate matching the rate at which the work string is lifted. Embodiments are described for use in a rigless well abandonment procedure.