Blowout preventer with wedge ram assembly and method of using same

摘要

A ram assembly of a blowout prevent (BOP) includes a ram shuttle, a ram wedge and a ram seat. The ram shuttle and the ram wedge are slidably positionable in a ram channel of a BOP housing between a retracted and extended position. The ram shuttle has a wedge cavity extending therethrough and an inclined surface thereon. The ram wedge has a tubular cavity therethrough for receiving the tubular. The ram wedge has a corresponding inclined surface engageable with the inclined surface of the ram shuttle, and wedges between the ram shuttle and the housing whereby a force is generated therebetween. The ram seat is positionable in the housing about the passage, and is engageable with the ram wedge and the housing when the ram shuttle and the ram wedge are moved to the extended position whereby a seal is formed therebetween.

主权项

1. A ram assembly of a blowout preventer for sealing a wellbore, the blowout preventer having a housing with a passage therethrough for receiving a tubular of the wellbore and a ram channel therethrough, the ram assembly comprising:
a ram shuttle slidably positionable in the ram channel between a retracted and extended position, the ram shuttle having a wedge cavity extending therethrough and an inclined surface thereon; a ram wedge having a tubular cavity therethrough for receiving the tubular, the ram wedge slidably positionable in the wedge cavity between a retracted and an extended position, the ram wedge having a corresponding inclined surface engageable with the inclined surface of the ram shuttle to wedge between the ram shuttle and the housing of the blowout preventer whereby a force is generated therebetween, the ram wedge engageable with the tubular; and a ram seat positionable in the housing about the passage, the ram seat having a hole therethrough for receiving the tubular, the ram seat engageable with the ram wedge and the housing of the blowout preventer when the ram shuttle and the ram wedge are moved to the extended position whereby a seal is formed therebetween.