E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 17/08 (2006.01) E21B 17/046 (2006.01) E21B 43/10 (2006.01) F16L 13/14 (2006.01) F16L 15/04 (2006.01) F16L 15/06 (2006.01)
Patent
CA 2491300
An expandable coupling arrangement for coupling first and second tubulars includes a male thread portion on an end of the first tubular and a female thread portion on an end of the second tubular. The thread portions comprise dovetail threads having flanks, roots and crests, wherein the flanks are inclined at an angle of greater than 10~.
Un agencement de raccordement extensible destiné à raccorder des premiers et des seconds matériels tubulaires comprend une partie de filetage mâle sur une extrémité du premier matériel tubulaire et une partie de filetage femelle sur une extrémité du second matériel tubulaire. Les parties de filetage comprennent des filets en queue d'aronde présentant des flancs, des racines et des sommets, les flancs sont inclinés à un angle supérieur à 10·.
Abercrombie Simpson Neil Andrew
Duggan Andrew Michael
Glover Neil James
Harrall Simon John
Metcalfe Paul David
Marks & Clerk
Weatherford/lamb Inc.
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