Pipe joints or couplings – With assembly means or feature – Particular tool-engaging means or with tool
Patent
1989-03-23
1990-03-27
Arola, Dave W.
Pipe joints or couplings
With assembly means or feature
Particular tool-engaging means or with tool
285144, 285348, 285356, 285910, F16L 3500
Patent
active
049114808
ABSTRACT:
A well has an improved means for sealing an annular space within the bore of the wellhead housing surrounding the casing. An annular shoulder is stationarily located in the bore of the wellhead housing. A seal locates on top of the annular shoulder, the seal having a graphite material central section sandwiched between upper and lower metal rings. A cylindrical torque nut, having external threads which engage threads located in the bore of the wellhead housing, has a lower rim which engages the upper metal ring of the seal. The torque nut has a bore therethrough with at least one vertical groove formed therein for receiving a torque tool to rotate the torque nut for expanding the central section of the seal against the casing and wellhead housing to a selected amount.
REFERENCES:
patent: 318447 (1885-05-01), Campbell
patent: 1427318 (1922-08-01), Payne
patent: 1734040 (1929-11-01), McEvoy
patent: 1807046 (1931-05-01), Rasmussen et al.
patent: 1892377 (1932-12-01), Bergskaug
patent: 2104808 (1938-01-01), Neuhaus et al.
patent: 2902302 (1959-09-01), Ackermann
patent: 3185505 (1965-05-01), Lanmon
patent: 3248132 (1966-04-01), Pierce
patent: 4343495 (1982-08-01), Nobileau et al.
patent: 4360186 (1982-11-01), Tinsley et al.
patent: 4577873 (1986-03-01), Baumann
PI-8831 Stock No. CL01748 Drawing.
Bridges Charles D.
Dach, Jr. Anton J.
Arola Dave W.
Bradley James E.
Vetco Gray Inc.
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