Expandable connection

Details Expandable connection Expandable connection

E - Fixed Constructions

21

B

E21B 17/08 (2006.01) E21B 17/042 (2006.01) E21B 43/10 (2006.01) F16L 15/00 (2006.01)

Patent

CA 2442355

An expandable tubular coupling (23) comprises a threaded male portion (28) and a corresponding threaded female portion (30), wherein the thread portions (28,30) feature thread profiles configured such that the coupling (23) may be made up to a predetermined extent, and once made up to the predetermined extent may be made up no further. In a disclosed embodiment the thread profiles are a combination of a square thread profile (36, 38) and a dovetail thread profile (32,34).

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