SIDE-TRACKING A WELLBORE

Abstract: a whipstock assembly and a method for side-tracking a wellbore. the whipstock assembly includes a casing sub-assembly. the casing sub-assembly has a first rotating collar, a second rotating collar, and multiple bars. the bars are movable from a first position spaced apart from the first and second rotating collars to a second position extending between the first rotating collar and the second rotating collar. the bars are rotatable from the second position to a third position to open a window in the bars and form a ramp oriented toward the window.

Inventor(s): Bandar S. Malki, Miguel A. Avila Romero, Mujahid Otman Alhulailah

CPC Classification: E21B7/061 (Deflecting the direction of boreholes)

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