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:
Feb. 14, 2023
Filed:
Apr. 02, 2015
Applicant:
Bisn Tec Ltd., Runcorn, GB;
Inventor:
Paul Carragher, Lymm, GB;
Assignee:
Bisn Tec Ltd., Warrington, GB;
Attorney:
Primary Examiner:
Assistant Examiner:
Int. Cl.
CPC ...
E21B 29/02 (2006.01); E21B 29/10 (2006.01); E21B 33/138 (2006.01); E21B 36/00 (2006.01); E21B 37/00 (2006.01); E21B 33/16 (2006.01);
U.S. Cl.
CPC ...
E21B 33/138 (2013.01); E21B 29/02 (2013.01); E21B 29/10 (2013.01); E21B 36/001 (2013.01); E21B 36/003 (2013.01); E21B 36/008 (2013.01); E21B 37/00 (2013.01); E21B 33/16 (2013.01);
Abstract
A method of clearing well casing () or tubing from a target region of an oil/gas well () borehole is provided. The clearance of the oil/gas well bore hole being achieved by employing chemical agents () that consume, weaken or melt the well casing/tubing. In some aspects of the method the well casing is cleared to expose the rock formation within which the well borehole is formed so that the rock formation can be accessed from within the well casing/tubing. In other aspects of the method the removal of inner tubing structures is used to facilitate the unimpaired deployment of repair tools down the well borehole.