Hydril-type connector

Details Hydril-type connector Hydril-type connector

1986-03-24

1988-03-01

Kundrat, Andrew V.

Pipe joints or couplings

Particular interface

Tapered

285347, 285351, 285355, F16L 1500

Patent

active

047281294

ABSTRACT:
An improved pressure type connection on stepped-thread Hydril-type tubing and casing tool joints is disclosed, wherein a secondary sealing means is included between the stepped threaded areas of the Hydril-type connector. The secondary sealing means includes an annular ring of relatively rigid, internally tenacious plastic or rubber material, which serves to contain well pressure if the metal-to-metal sealing surfaces on the pin and box members of the Hydril-type connector are damaged. With such secondary sealing rings, damaged Hydrill-type connectors can still be used, without having to scrap same, or having to repair the damaged area at great expense.

REFERENCES:
patent: 2110825 (1938-03-01), Archer
patent: 2150221 (1939-03-01), Hinderliter
patent: 2259232 (1941-10-01), Stone
patent: 2262210 (1941-11-01), Stone
patent: 2992019 (1961-07-01), MacArthur
patent: 3100656 (1963-08-01), MacArthur
patent: 3336054 (1967-08-01), Blount
patent: 3822902 (1974-07-01), Maurer
patent: 3947942 (1976-04-01), Blocker
patent: 4009893 (1977-03-01), Schatton
patent: 4085951 (1978-04-01), Morris

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