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:
Jan. 25, 2022
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. Using a tool string including a casing cutter and a stinger, where the casing cutter has a central through bore including a wall to isolate the cutting assembly from the cement, cement can be passed through the cutter and deposited using the stinger to form a plug. Embodiments of casing cutters are provided for parting an upper length of casing from a lower length of casing.