Patent ID: 8720564

Claim:
A blade for severing a tubular of a wellbore, the wellbore penetrating a subterranean formation, the blade extendable by a ram of a blowout preventer, the blowout preventer receiving the tubular therethrough, the blade comprising: a blade body having a front face on a side thereof facing the tubular, at least a portion of the front face having a vertical surface and at least a portion of the front face having an inclined surface, the vertical surface perpendicular to a bottom surface of the blade body, the blade body comprising: a loading surface on an opposite side of the blade body to the front face, the loading surface receivable by the ram; a cutting surface along at least a portion of the front face for engagement with the tubular; and a piercing point along the front face for piercing the tubular, the piercing point having a tip extending a distance from the cutting surface.