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. 17, 2003
Filed:
Sep. 25, 2000
Charles D. Hailey, Oklahoma City, OK (US);
Other;
Abstract
A method of removing lining from a tubing in a well includes: reaming at least a portion of the lining material; cutting at least a segment of the lining along a spiral path; engaging the lining for applying a pulling force to the lining; and applying a pulling force to lift the engaged lining out of the tubing. Individual aspects of this also form parts of the present invention, such as a lining reamer, a method of excavating material of a lining in tubing in a well, a spiral-cut cutting tool, a method of spiral cutting lining in a tubing in a well, various inner engagement members to navigate through a bent lining segment in a lining in tubing in a well, a lining removal tool in which the components are rotationally fixed so that all rotate together, a lining removal tool in which an inner engagement member (such as a flat cutting blade or a plurality of resilient but stiff wires) is connected to an inner surface of the outer engagement member, and lining removal methods.