Method for forming a window in a subsurface well conduit

Details Method for forming a window in a subsurface well conduit Method for forming a window in a subsurface well conduit

1992-10-09

1994-01-11

Bui, Thuy M.

Wells

Means for guiding insertable element laterally of well axis

E21B 3300

Patent

active

052772519

ABSTRACT:
A method for forming a window in a subsurface well conduit using a coiled tubing unit together with standard rotary rig tools adopted for use with a coiled tubing unit, and a whipstock with no wear projection on the guide surface thereof, and controlling the angular relationship between the tools and the whipstock while forming the window.

REFERENCES:
patent: 5115872 (1992-05-01), Brunet et al.
patent: 5195591 (1993-03-01), Blount et al.
patent: 5211715 (1993-05-01), Braden et al.

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