초록 ▼

A hanger for supporting tubing in a well head including a tubular body adapted for connection to a casing head and having a tapered and upwardly facing seat, a tubular hanger positioned within the body and supported on the seat, a downwardly converging annular space between facing portions on the ex

A hanger for supporting tubing in a well head including a tubular body adapted for connection to a casing head and having a tapered and upwardly facing seat, a tubular hanger positioned within the body and supported on the seat, a downwardly converging annular space between facing portions on the exterior of the hanger and on the interior of the body, a metal seal ring positioned within the converging space, a seal actuator sleeve positioned between the hanger and the body and being movable axially to engage the seal ring, and a wedging screw extending through the body. The wedging screw engages the seal actuator sleeve and wedges the seal actuator sleeve onto the seal whereby the seal is forced into sealing engagement in the converging space between the hanger and the body.

대표청구항 ▼

A hanger comprising a body having a central bore with an upwardly facing seat therein, a tubular hanger positioned within said central bore on said seat, an annular converging space free of obstructions and located between the interior of said body and the exterior of said hanger, a metal seal ring

A hanger comprising a body having a central bore with an upwardly facing seat therein, a tubular hanger positioned within said central bore on said seat, an annular converging space free of obstructions and located between the interior of said body and the exterior of said hanger, a metal seal ring in said converging annular space and freely movable therein in the direction of convergence until said seal ring engages the interior of said body and the exterior of said hanger, a sleeve around a portion of the exterior of said hanger, engaging said seal ring and slidable axially on said hanger, and means extending through the wall of said body engaging and exerting a force on said sleeve whereby said sleeve is driven in the direction of convergence of said space until said seal ring is forced into sealing engagement between said hanger and said body, said sealing ring moving axially to sealing engagement with its inner and outer surfaces being maintained substantially parallel to the sides of said converging annular space and when in sealing engagement at least a portion of said converging annular space extending beyond the end of said sealing ring.