E - Fixed Constructions – 21 – B
Patent
E - Fixed Constructions
21
B
E21B 29/00 (2006.01) B21D 17/04 (2006.01) B21D 39/10 (2006.01) E21B 43/10 (2006.01)
Patent
CA 2426766
A tubing expander (10) comprises a body (12) carrying a plurality of radially movable piston-mounted rollers (24) and associated sleeves (16) mounted about the body (12) and being radially supported by the rollers (12). The expander (10) is positioned in a length of tubing of a first diameter, the pistons (28) extended, and the expander (10) rotated such that the sleeves (16) roll around the inner surface of the tubing and expand the tubing to a larger second diameter.
Cette invention se rapporte à un appareil (10) à élargir les tubes, qui comprend un corps (12) portant plusieurs rouleaux montés sur pistons radialement mobiles (24) et des manchons associés (16) montés autour du corps (12) et maintenus radialement par les rouleaux (12). Cet appareil (10) est placé dans un segment de tube d'un premier diamètre, les pistons (28) sont déployés et l'appareil (10) est mis en rotation pour que les manchons (16) roulent autour de la surface interne du tube et élargissent le tube jusqu'à ce que celui-ci présente un second diamètre plus grand.
Marks & Clerk
Weatherford/lamb Inc.
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