Patent ID: 7322432
Filing Date: 2008-01-29
Classification: E21B

Abstract:
1. An apparatus for drilling a wellbore and cementing a liner therein, comprising: a pipe string connected to the liner, wherein the liner has a cutting apparatus on a lower end thereof; a diverter tool connected in the pipe string, the diverter tool defining a longitudinal flow passage and diverter ports intersecting the longitudinal flow passage, wherein a portion of a drilling fluid displaced through the diverter tool toward the liner is diverted through the diverter ports into an annular space around the diverter tool above the liner, the diverter tool including a closure member, the closure member comprising a closing sleeve detachably connected in the diverter tool and disposed in the diverter tool and being movable from an open position wherein communication through the diverter ports from the longitudinal flow passage is permitted, to a closed position wherein the closure member blocks the diverter ports; and a setting tool for moving the closing sleeve from the open position to the closed position, wherein the setting tool comprises: