Oilwell tubing connection

Details Oilwell tubing connection Oilwell tubing connection

1988-12-12

1990-12-04

Arola, Dave W.

Pipe joints or couplings

Particular interface

Tapered

285397, F16L 2500

Patent

active

049748823

ABSTRACT:
A connection (20) for oilwell tubing and the like is disclosed which has the same outer diameter (21) as does the tubing joints (8 and 9) that it connects. Tubing joints are formed internally with a tapered thread (6 and 7) having a loadbearing flank angle (75.degree. or more) that negates pullout tendency. A mating coupling (2) having external threads (3 and 4) may be provided with a bore 10 so as to clear a driftbar. Coupling (2) may be provided with bore (13) extending from (14 to 15) so as to develop substantially, a 100% joint strength.

REFERENCES:
patent: 1562373 (1925-11-01), Sheldon
patent: 1703232 (1929-02-01), Gray et al.
patent: 1932427 (1933-10-01), Stone
patent: 2094491 (1937-09-01), Janata
patent: 3572771 (1971-03-01), Redwine
patent: 4508375 (1985-04-01), Patterson
patent: 4813717 (1989-03-01), Watts

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