Pipe joints or couplings – Frangible element
Patent
1986-06-11
1987-09-29
Husar, Cornelius J.
Pipe joints or couplings
Frangible element
166345, 285 39, 285308, 285313, 285397, 285920, F16L 3708
Patent
active
046964932
ABSTRACT:
A conductor tieback connector (T) thus having a tubular body (12) connectible to the lower end of a conductor or a string of conductors (C), a downwardly extending funnel (20) with two bearing surfaces and a tapered guide (24). The tapered guide (24) aids in initial stabbing of the connector (T) over a wellhead (W) and the two bearing surfaces (26, 30) operate on the outside of the wellhead (W) to force the tieback connector (T) into angular alignment under the influence of the weight of the conductor string. Seals (14, 16), located between the tieback connector (T) and wellhead (W), are compressed with axial movement of the tieback connector (T). A two-piece internal floating bushing (42, 42a, 42b), threadible (50, 52) on the interior surface of the tieback connector (T), is moved within the interior of the wellhead (W) where locking dogs (46) engage running tool grooves (40) in the bore of the wellhead (W) to clamp the tieback connector (T) onto the wellhead (W).
REFERENCES:
patent: 2862560 (1958-12-01), Bostock et al.
patent: 3345084 (1967-10-01), Hanes et al.
patent: 3477744 (1969-11-01), Brown
patent: 4181331 (1980-01-01), Cowan
patent: 4280719 (1981-07-01), Daniel et al.
patent: 4343495 (1982-08-01), Nobileau et al.
patent: 4406324 (1983-09-01), Baugh et al.
patent: 4528738 (1985-07-01), Galle, Jr.
patent: 4610465 (1986-09-01), Boyadjieff
patent: 4611829 (1986-09-01), Hughes
Dwyer Joseph R.
Husar Cornelius J.
Nicholson Eric K.
Vetco-Gray Inc.
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