Patent ID: 9010426
Filing Date: 2015-04-21
Classification: E21B

Abstract:
1. A milling system for forming a casing exit, comprising: a mill arranged within a shroud and configured to translate axially with respect to the shroud once detached from the shroud; a guide block coupled to a distal end of the mill and configured to guide and support the mill while the mill forms the casing exit; a guide support arranged within the shroud and having a ramp portion that transitions into a planar portion, the guide support defining one or more longitudinal channels configured to accumulate cuttings and debris such that the cuttings and debris remain out of a path of the mill as the mill moves axially along the guide support; and one or more magnets arranged within the one or more longitudinal channels, the one or more magnets being configured to magnetically attract the cuttings and debris.