Assembly and technique for completing a multilateral well

摘要

An apparatus that is usable with a well includes an assembly, which includes a whipstock and a lateral deflector that are adapted to be run downhole into a first wellbore of the well as a unit. The whipstock is adapted to guide at least a drilling string to form a second wellbore, and the lateral deflector is adapted to guide a liner during installation of the liner into the second wellbore.

主权项

1. A method comprising:
running an assembly comprising a packer, a whipstock, a milling tool assembly, and a lateral deflector connected to the packer as a single unit in a single trip into a casing string of a first wellbore of a well; the milling tool assembly including a pilot mill, a gauge mill, and a reamer mill; milling a casing window in the casing string during the single trip; using the whipstock to guide at least a drill string to form a second wellbore through the casing window; disengaging the whipstock from the assembly; retrieving the whipstock from the well while leaving the lateral deflector in the well; running a liner into the second wellbore, the running comprising guiding the liner using the lateral deflector; and perforating the lateral deflector while in the well to open fluid communication through the packer without removing the packer from the first wellbore.