Preperforated coiled tubing

Details Preperforated coiled tubing Preperforated coiled tubing

E - Fixed Constructions

21

B

E21B 17/00 (2006.01) B21C 37/15 (2006.01) B21C 37/28 (2006.01) E21B 17/20 (2006.01) E21B 43/08 (2006.01) E21B 43/11 (2006.01)

Patent

CA 2193864

Preperforated tubing is produced by forming a perforation (20) in flat strip (10) of raw material, forming a hollow, cylindrical tube from the flat strip (10), and placing a removable plug (16) into the perforation (20), so as to form a fluid-tight seal. A sealing element (18) may be placed into the perforation (20). The perforation (20) may comprise a hole, into which first (22) and second (24) countersinks may be formed. The sealing element (18) may be placed into the first countersink (22), and the plug (16) may be placed through the countersinks (22, 24) and the hole, such that the plug's body fills the hole and the plug's head fits within the second countersink (24).

On produit un tube préperforé en pratiquant une perforation (20) dans une bande droite (10) de matière brute, en formant un tube cylindrique creux à partir de cette bande droite (10), et en plaçant un bouchon amovible (16) dans la perforation (20), afin d'obtenir une obturation étanche aux fluides. Un joint d'étanchéité (18) peut être placé dans la perforation (20). Cette perforation (20) peut être constituée par un trou, dans lequel peuvent être formées des première (22) et seconde (24) fraisures. Le joint d'étanchéité (18) peut être placé dans la première fraisure (22) et le bouchon (16) peut être introduit à travers les fraisures (22, 24) et le trou, pour que le corps du bouchon remplisse le trou et la tête du bouchon s'adapte dans la seconde fraisure (24).

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