| 摘要 |
A cutting tool and a rotatable removal tool can be used together in a system and method for removing lining from tubing in a well. A particular cutting tool includes a mandrel, a sleeve mounted on the mandrel, and a cutting member connected to the sleeve. The cutting member has a width and a cutting edge of angular disposition to form a beveled cut through the lining. Setoff members can be used to space the sleeve from the lining and to engage the lining to enable relative rotation between the mandrel and the sleeve when the cutting tool is in the lining. A particular removal tool includes an inner engagement member and an outer engagement member. The two engagement members are connected such that lining is drawn into and held between them in response to rotating at least the inner engagement member within the lining. A particular engagement member includes a bulbous body adapted to twist into lining in response to rotating the bulbous body in the lining. Another particular engagement member includes a cylindrical body having a wall defining a cavity, the wall defining inner and outer diameters substantially equal to nominal inner and outer diameters of the lining. The wall can have a lower end to cut into and engage a facing end surface of the lining. The wall can have an inner surface in at least a portion of which a ridge is defined.
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