Milling apparatus and method for a well

Details Milling apparatus and method for a well Milling apparatus and method for a well

E - Fixed Constructions

21

B

E21B 29/06 (2006.01)

Patent

CA 2391678

A downhole system includes a deflector with a reaction surface that is engageable to a mill. The deflector is coupled to a motion mechanism that is activable to move the deflector generally along a longitudinal direction. During operation, the mill is engaged to a surrounding downhole structure, and the mill is rotated. As the mill cuts an opening in the downhole structure, the motion mechanism moves the deflector, which allows the mill to move with the deflector. A smooth motion is provided by the motion mechanism to enable a more accurate cutting of the downhole structure (e.g., casing or liner).

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