Patent ID: 8739873
Filing Date: 2014-06-03
Classification: E21B

Abstract:
1. A method of cementing a wellbore, comprising: delivering a diversion and movable isolation tool into the wellbore and thereby at least partially isolating a first wellbore volume from a second wellbore volume, the second wellbore volume being uphole relative to the first wellbore volume, wherein during the delivering the diversion and movable isolation tool, fluid is passed through the diversion and moveable isolation tool from the first wellbore volume to the second wellbore volume; passing fluid through the diversion and movable isolation tool into the first wellbore volume; substantially discontinuing the passing of fluid through the diversion and movable isolation tool into the first wellbore volume; wherein the substantially discontinuing the passing of fluid comprises interfacing an obturator with the diversion and movable isolation tool; passing fluid through the diversion and movable isolation tool into the second wellbore volume; and increasing a fluid pressure to disconnect the diversion and movable isolation tool from a delivery device.