Patent ID: 8733449
Filing Date: 2014-05-27
Classification: E21B,Y10T

Abstract:
1. A wellbore servicing apparatus comprising: a tubular body at least partially defining an axial flowbore; a first valve assembly, positioned within the tubular body, wherein, when activated, the first valve assembly will prevent fluid communication through the axial flowbore in a first direction and allow fluid communication through the axial flowbore in a second direction, and, when deactivated, the first valve assembly will allow fluid communication through the axial flowbore in the first direction and the second direction; a first sliding sleeve slidable within the tubular body and transitionable from a first position to a second position, wherein, when the first sliding sleeve is in the first position, the first valve assembly is in the activated mode, and, when the first sliding sleeve is in the second position, the first valve assembly is retained in the deactivated mode; a second valve assembly, positioned within the tubular body downhole from the first valve assembly, wherein, when activated, the second valve assembly will prevent fluid communication through the axial flowbore in the first direction and allow fluid communication through the axial flowbore in the second direction, and, when deactivated, the second valve assembly will allow fluid communication through the axial flowbore in the first direction and the second direction; and a second sliding sleeve slidable within the tubular body and transitionable from a first position to a second position, wherein, when the second sliding sleeve is in the first position, the second valve assembly is retained in the deactivated mode, and, when the second sliding sleeve is in the second position downhole from the first position, the second valve assembly is in the activated mode; wherein when the first sliding sleeve is in the second position and the second sliding sleeve is in the first position, forward-circulation and reverse-circulation through the axial flowbore will be allowed; and wherein, when the first sliding sleeve is in the second position and the second sliding sleeve is in the second position, forward-circulation and reverse-circulation through the axial flowbore will be prevented.