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:
Mar. 02, 2021
Filed:
Nov. 15, 2018
Applicant:
Deep Casing Tools, Ltd., Aberdeen, GB;
Inventors:
David John Stephenson, Aberdeen, GB;
Tomasz Jozef Walerianczyk, Tarnowiec, PL;
Neil Andrew Abercrombie Simpson, Aberdeen, GB;
Assignee:
Deep Casing Tools, Ltd., Aberdeen, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 29/00 (2006.01);
U.S. Cl.
CPC ...
E21B 29/00 (2013.01);
Abstract
A method for recovering a conduit from a wellbore includes positioning an expander tool having at least one biasing element within the conduit an expander tool and exerting a force against the at least one biasing element to radially expand the conduit to an amount sufficient to fracture solids outside of and in contact with the conduit.