Apparatus and methods for forming a lateral wellbore

Details Apparatus and methods for forming a lateral wellbore Apparatus and methods for forming a lateral wellbore

E - Fixed Constructions

21

B

E21B 29/06 (2006.01) E21B 7/06 (2006.01) E21B 7/20 (2006.01) E21B 41/00 (2006.01) E21B 43/10 (2006.01)

Patent

CA 2406663

A method and system of forming a lateral wellbore in a time and trip saving manner using a mill/drill to locate and place a casing window. In one aspect of the invention, a lateral wellbore is drilled with liner which is subsequently left in the lateral wellbore to line the sides thereof. In another aspect, the mill/drill is rotated with a rotary steerable system and in another aspect, the mill/drill is rotated with a downhole motor or a drill stem.

L'invention concerne un procédé et un système de formation d'un puits latéral, économiques en temps et en déplacement, et consistant à utiliser une fraise/foreuse pour localiser et placer une fenêtre de tubage. Dans un aspect de l'invention, on fore un puits latéral à l'aide d'une colonne perdue qui est ultérieurement laissée dans le puits latéral, de manière chemiser les côtés de celui-ci. Dans un autre aspect de l'invention, la fraise/foreuse est mise en rotation au moyen d'un système rotatif orientable, et dans un autre aspect, cette fraise/foreuse est mise en rotation à l'aide d'un moteur fond de trou ou d'une tige de forage.

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