초록 ▼

A hanger for hanging a string of conduit within a wellhead has a metal-to-metal seal. The hanger has a body that locates within the wellhead and provides an annular clearance between the body and the wellhead. A locking device fits within this clearance to lock the hanger against axial movement. The

A hanger for hanging a string of conduit within a wellhead has a metal-to-metal seal. The hanger has a body that locates within the wellhead and provides an annular clearance between the body and the wellhead. A locking device fits within this clearance to lock the hanger against axial movement. The metal-to-metal seal is an annular ring with inner and outer cylindrical sidewalls. The seal has a cavity into which a wedge ring is driven to urge the sidewalls apart to embed within the hanger body and wellhead bore. The locking device has reacting wedges that urge a split ring outward into engagement with the wellhead. A retaining mechanism is then moved downwardly with the seal to retain the split ring in locking engagement.

대표청구항 ▼

For use in a wellhead member having a bore, an improved hanger adapted to be mounted in the bore for supporting a string of conduit, comprising in combination: a hanger body having a lower end to which the conduit is adapted to be secured; a plurality of parallel wickers formed on the exterior of th

For use in a wellhead member having a bore, an improved hanger adapted to be mounted in the bore for supporting a string of conduit, comprising in combination: a hanger body having a lower end to which the conduit is adapted to be secured; a plurality of parallel wickers formed on the exterior of the body for alignment with a plurality of parallel wickers formed in the bore; locking means positionable in an annular clearance provided between the body and the bore for locking the body in the bore; a deformable metal seal ring positionable in the clearance between the wickers of the bore and wickers of the body, having inner and outer sidewalls; and wedge means for urging the sidewalls radially apart to embed within the wickers of the body and the bore.