초록 ▼

A blowout preventer is provided with an improved sealing assembly for sealing engagement with a pipe extending through the blowout preventer into a well bore. The sealing assembly includes an elastomeric seal and a plurality of circumferentially spaced metal inserts within the seal for substantially

A blowout preventer is provided with an improved sealing assembly for sealing engagement with a pipe extending through the blowout preventer into a well bore. The sealing assembly includes an elastomeric seal and a plurality of circumferentially spaced metal inserts within the seal for substantially minimizing or preventing extrusion of the seal under high fluid pressure. The BOP be reliably used for sealing engagement with pipes of varying diameters. Each insert has a substantially I-shaped configuration with an upper flange, a lower flange, and a rib fixedly interconnecting the flanges. A slot is provided within at least one of the flanges and forms a cavity for receiving a male interconnecting member extending circumferentially from an adjacent one of the inserts, such that the circumferentially spaced inserts are interconnected to minimize extrusion gaps between the inserts and to better enable the sealing assembly to form a positive seal with the pipe.

대표청구항 ▼

A sealing assembly for a ram block of a blowout preventer for sealing with a pipe or the like within a well bore, the sealing assembly comprising: a resilient seal having a generally semi-circular portion adapted for engagement with the pipe; a plurality of rigid inserts each at least substantially

A sealing assembly for a ram block of a blowout preventer for sealing with a pipe or the like within a well bore, the sealing assembly comprising: a resilient seal having a generally semi-circular portion adapted for engagement with the pipe; a plurality of rigid inserts each at least substantially embedded within the seal and circumferentially arranged about the semi-circular portion of the seal; each insert including an upper flange having an upper radially innermost surface for pressing the seal into sealing engagement with the pipe, a lower flange, and a rib fixedly interconnecting the upper and lower flanges; each insert having a slot within at least one of the upper and lower flanges, the slot having an opening adjacent a side of the flange and forming a cavity defined by the flange; and each insert further having a male interconnecting member extending circumferentially outward from an opposing side of the flange for sliding engagement within the slot of an adjacent member, such that the circumferentially spaced inserts are independently movable with respect to each other and are interconnected while the blowout preventer closes about the pipe.