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:
Jun. 02, 2015
Filed:
Nov. 19, 2010
Applicant:
Alan Martyn Eddison, York, GB;
Inventor:
Alan Martyn Eddison, York, GB;
Assignee:
National Oilwell Varco, L.P., Houston, TX (US);
Attorney:
Primary Examiner:
Int. Cl.
CPC ...
E21B 31/12 (2006.01); E21B 31/03 (2006.01); E21B 29/00 (2006.01); E21B 31/00 (2006.01);
U.S. Cl.
CPC ...
E21B 31/03 (2013.01); E21B 29/00 (2013.01); E21B 31/005 (2013.01);
Abstract
A tubular retrieval method involves applying a cyclically varying fluid pressure to the interior of a section of cut bore-lining tubular. The tubular may be casing which it is desired to remove from a bore. A pulling force may also be applied to the tubular.