Well Commissioner
'Well Commissioner' is Schlumberger's liner top test tool. After cementing the liner, multiple trips are required for cleaning out cement inside the liner, scrapping, and then running a retrievable packer assembly for carrying out a negative pressure test to ensure the integrity of the liner top. Well Commissioner is designed to save rig time by making it possible to clean out to cased hole TD and perform a negative pressure test at liner top in a single trip.