Wellbore milling and cleanout system and methods of use

Abstract

Systems and methodologies are provided for simultaneously milling obstructions from within a subterranean wellbore while pumping the milled obstructions and debris from the wellbore to the surface. The present systems and methodologies are operative in a first milling and/or cleanout mode of operation to both mill the obstructions from the wellbore and then to clean such debris therefrom, a cleanout mode of operation alone, and/or a flushing mode of operation to flush the system and wellbore as desired. The present systems and methods of use may comprise providing at least one sealing assembly for sealingly positioning the system within the annular space of the wellbore, isolated the wellbore therebelow, providing at least one pump assembly configured in reverse circulation for cleaning the wellbore, and providing at least one milling assembly for milling obstructions from within the wellbore.