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:
Jan. 31, 2018
Applicant:
Ardyne Holdings Limited, Aberdeen, GB;
Inventor:
George Telfer, Aberdeen, GB;
Assignee:
ARDYNE HOLDINGS LIMITED, Aberdeen, GB;
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 29/00 (2006.01); E21B 33/134 (2006.01); E21B 23/04 (2006.01); E21B 29/02 (2006.01); E21B 47/10 (2012.01);
U.S. Cl.
CPC ...
E21B 29/005 (2013.01); E21B 23/04 (2013.01); E21B 33/134 (2013.01); E21B 29/02 (2013.01); E21B 47/10 (2013.01);
Abstract
Method and apparatus for single-trip cementing and casing cutting for well abandonment and slot recovery. A casing cutter is described which has a central through bore including a wall to isolate the cutting assembly from cement being passed through the casing cutter. The casing cutter is run in a cased well bore, cementing occurs through the casing cutter to form a cement plug and then the casing is cut. Embodiments of casing cutters are provided for parting an upper length of casing from a lower length of casing.