Dovetail thread coupling for expandable tubulars

Details Dovetail thread coupling for expandable tubulars Dovetail thread coupling for expandable tubulars

E - Fixed Constructions

21

B

E21B 17/08 (2006.01) E21B 17/046 (2006.01) E21B 43/10 (2006.01)

Patent

CA 2759774

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°.

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