E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 29/00 (2006.01) E21B 10/42 (2006.01) E21B 31/16 (2006.01) E21B 31/20 (2006.01)
Patent
CA 2357754
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.
Hailey Charles D.
Ridout & Maybee Llp
Testers Inc.
LandOfFree
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