Ensemble de coupe pour couper un materiel tubulaire, ensemble de fond de trou comprenant ledit ensemble de coupe et procede de coupe d'un materiel tubulaire

Cutter assembly for cutting a tubular, bottom hole assembly comprising such a cutter assembly and method of cutting a tubular

Abstract

A method of cutting a tubular includes disposing a rotatable cutter assembly in the tubular, the cutter assembly including a blade (20) having a cutting portion (50); engaging the tubular using a trailing cutting structure of the cutting portion; engaging the tubular using an intermediate cutting structure of the cutting portion; forming a window in the tubular and longitudinally extending the window using a leading cutting structure of the cutting portion. A rotatable blade (20) includes a blade body (54) extendable from a retracted position; and a cutting portion (50) on the blade body having: a trailing cutting structure configured to engage the tubular, an intermediate cutting structure configured to engage the tubular while the trailing cutting structure engages the tubular, a leading cutting structure configured to engage an exposed wall thickness of the tubular; and an integral stabilizer disposed on at least a portion of an outer surface of the blade body.

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