Oilwell tubing connection
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United States of America Patent
Stats
-
Mar 21, 1989
Grant Date -
N/A
app pub date -
Jul 18, 1986
filing date -
Nov 23, 1984
priority date (Note) -
Expired
status (Latency Note)
Importance
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.
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Cited Art Landscape
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