Torque control device for downhole milling

Details Torque control device for downhole milling Torque control device for downhole milling

1995-12-01

1997-12-16

Neuder, William P.

Wells

Means for perforating, weakening, bending or separating pipe...

Cutter rotates circumferentially of pipe

1661175, F21B 708

Patent

active

056974388

ABSTRACT:
A support mechanism for a mill, particularly usable with a whipstock and driven by a downhole motor supported by coiled tubing is disclosed. The support mechanism comprises a wearable ring adjacent the cutting structure which, when assembled into the downhole assembly, keeps the rotating blades away from the whipstock face and oriented toward the casing to be cut. As the milling progresses, the support mechanism wears away to allow advancement of the mill into the casing to complete the formation of the window or opening.

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R. Steven, AZ International Packstock Complete with Starter Mill, Running Tool and Bypass Valve, drawing No. AZ0015, Aug. 27, 1992.
A-Z International Tool Co., A-Z Pack-Stock Casing Sidetracking System, Composite Catalog, 1 page.
A-Z Grant International literature, Casing Sidetrack Systems, 7 pages.

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