Downhole window finder system

Details Downhole window finder system Downhole window finder system

2011-07-19

2011-07-19

Wright, Giovanna C (Department: 3672)

Wells

Processes

With indicating, testing, measuring or locating

C166S255300, C166S117500, C166S117600

Reexamination Certificate

active

07980307

ABSTRACT:
An apparatus for finding a pre-existing downhole window includes a body having a deflector ramp and a cavity, and an extendable dog disposed in the cavity, the dog mechanically moveable between a retracted position and an extended position into the pre-existing window. In some embodiments, the apparatus includes an axially moveable sleeve disposed adjacent the extendable dog. A downhole window finding apparatus includes a deflector including a window finding assembly, and a running tool removably coupled to the deflector, wherein the window finding assembly includes an extendable member and an axially moveable sleeve retaining the extendable member. In certain embodiments, a fluid flow path extends through the running tool and the deflector to the window finding assembly. In some embodiments, a shear bolt removably couples the running tool to the deflector and includes a fluid passage fluidicly coupling a flow line in the running tool to a flow line in the deflector. A method of finding a pre-existing downhole window is also disclosed.

REFERENCES:
patent: 4926936 (1990-05-01), Braddick
patent: 5743331 (1998-04-01), Adkins et al.
patent: 6279659 (2001-08-01), Brunet
patent: 6283208 (2001-09-01), George et al.
patent: 2003/0150612 (2003-08-01), McGarian et al.
patent: 2010/114699 (2010-10-01), None
U.K. Application No. 0915324.8 Combined Search and Examination Report dated Dec. 18, 2009.
Combined Examination and Search Report issued in corresponding British Patent Application No. GB0915324.8; Dated Dec. 21, 2010 (5 pages).

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