Wellhead equipment
AssigneeDril-Quip, Inc.
InventorLarry E. Reimert
Life of this patent
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Abstract
Subsea wellhead equipment is disclosed as comprising a housing including a main body of a first material having an internal cavity thereabout and a weld body of a material having a considerably greater yield strength than that of the main body formed integrally with the main body within the cavity to provide an upwardly facing seat in the housing bore, and a hanger including a main body and a ring of a material having a considerably greater yield strength than that of the main body and carried by the main body in a position to provide a downwardly facing shoulder engageable with the seat to support the load of the hanger therefrom.
Claims12
Wellhead equipment, comprising
- a housing disposable at the upper end of a well and having a bore therethrough, and
- a tubular hanger connectible to the upper end of a pipe string and lowerable into a landed position within the bore of the housing for suspending the pipe string within the well,
- said housing including a main body of a first material having an internal cavity thereabout and a weld body of a second material having a considerably greater yield strength than that of the first formed integrally with the main body within the cavity to provide an upwardly facing seat in the housing bore, and
- said hanger including a main body of a first material and a ring of a second material having a considerably greater yield strength than that of the first material and carried by the main body in position to provide a downwardly facing shoulder engageable with the seat to support the hanger therefrom.
Subsea wellhead equipment, comprising
- a housing adapted to be mounted on the upper end of an outer casing string and having a bore therethrough,
- a tubular hanger connectible to the upper end of an inner casing string and lowerable into a landed position within the bore of the housing for suspending the inner string within the outer string,
- said housing including a main body of a first material having an internal cavity thereabout and a weld body of a second material having a considerably greater yield strength than that of the first formed integrally with the main body within the cavity to provide an upwardly facing seat in the housing bore,
- said hanger including a main body of a first material and a ring of a second material having a considerably greater yield strength than that of the first material and carried by the main body in position to provide a downwardly facing shoulder engageable with the seat to support the hanger therefrom.
Dependencies are inferred from the claim text.