Patent ID: 7207390
Filing Date: 2007-04-24
Classification: E21B

Abstract:
1. A system for lining a lateral wellbore, comprising: a main casing having a lateral wellbore window formed therein disposed within a main wellbore; a whipstock having a longitudinal bore running therethrough and disposed within the main wellbore adjacent the lateral wellbore window, the whipstock comprising a deflecting surface for forming a lateral wellbore through the lateral wellbore window; a tie-back assembly operable to dispose a lateral liner within the lateral wellbore, the tie-back assembly having a tie-back window formed therein; and a latch mechanism operable to couple the tie-back assembly directly to the main casing and align the tie-back window with the longitudinal bore of the whipstock; the deflecting surface being configured so that when the tie-back assembly is disposed into the main wellbore, the lateral liner and a portion of the tie-back assembly are deflected into the lateral wellbore by the deflecting surface that the tie-back window aligns with the longitudinal bore of the whipstock.