Whipstock assembly with hydraulically set anchor

Details Whipstock assembly with hydraulically set anchor Whipstock assembly with hydraulically set anchor

1990-09-19

1992-10-13

Novosad, Stephen J.

Wells

Processes

Perforating, weakening, bending or separating pipe at an...

1661176, 166 552, 175 81, 175 82, E21B 708, E21B 2906

Patent

active

051542315

ABSTRACT:
A one-trip whipstock assembly incorporating a hydraulically set anchor which includes an interlock for maintaining the anchor in its set position upon interruption of hydraulic pressure. The anchor is connected to the lower end of the assembly which also includes a whipstock for diverting cutting tools and a locator sub for positioning the assembly in the cased well bore. The whipstock assembly is designed to be run into the well using a running string or a mill attached to the upper end of the whipstock in order to locate and set the whipstock and mill the casing in only one trip.

REFERENCES:
patent: 1835227 (1931-12-01), Lane et al.
patent: 2227347 (1940-12-01), Johnson
patent: 2509144 (1950-05-01), Grable et al.
patent: 2633331 (1953-03-01), Hampton
patent: 3095039 (1963-06-01), Kinzbach
patent: 4397355 (1982-08-01), McLamore
patent: 4765404 (1988-08-01), Bailey et al.
Oil and Gas Journal, p. 108, May 8, 1930.

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