The apparatus of the present invention provides a top drive supported tool for making up and running casing strings into a borehole. The tool comprises a fill-up and circulation assembly and a launcher assembly that is adapted to cooperate with a connectable cement wiper plug assembly for launching wiper...http://www.google.es/patents/US8096357?utm_source=gb-gplus-sharePatente US8096357 - Casing make-up and running tool adapted for fluid and cement control
Casing make-up and running tool adapted for fluid and cement control
