Cutting tool for use in a wellbore

Details Cutting tool for use in a wellbore Cutting tool for use in a wellbore

E - Fixed Constructions

21

B

E21B 10/32 (2006.01)

Patent

CA 2257538

A cutting tool (10) for use in a wellbore to cut into its wall has a body (40, 50) disposable at a desired location in the wellbore, at least one first blade (70) pivotally mounted on the body at a first location, at least one second blade (60) pivotally mounted on the body at a second location spaced axially from the first location, the blades being movable from a retracted position against the body and an operating position extending from the body, the first blades being shorter in length than the second blades.

L'invention concerne un outil coupant (10) destiné à être utilisé dans un forage afin de découper les parois de ce dernier. Cet outil comporte un corps (40, 50) pouvant être placé à un endroit désiré dans le forage, au moins une première lame (70) montée pivotante sur le corps au niveau d'un premier emplacement, au moins une seconde lame (60) montée pivotante sur le coprs au niveau d'un second emplacement espacé axialement du premier, les lames pouvant passer d'une position rétractée contre le corps à une position de fonctionnement s'étendant à partir du corps et inversement, les premières lames étant plus courtes que les secondes.

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