Limitless injection shoe

Abstract

A casing string assembly for deployment in a wellbore includes a shoe track provided at a lower end of a casing string that provides a flow path, an annular isolation apparatus arranged uphole from the shoe track and including a radial sealing member operable to expand radially and form a seal within an annulus defined between the casing string and an inner wall of the wellbore, a communication tool and including at least one port that facilitates fluid communication between the flow path and the annulus, the port being selectively opened and closed to permit and restrict fluid flow therethrough, and a first isolation device operable to form a seal within the flow path and thereby isolate the shoe track from the annular isolation apparatus and the communication tool, the first isolation device including a bypass mechanism selectively operable to permit fluid flow through the first isolation device.

The invention claimed is: 
     
         1 . A casing string assembly for deployment in a wellbore, the casing string assembly comprising:
 a shoe track provided at a lower end of a casing string that provides a flow path;   an annular isolation apparatus arranged uphole from the shoe track and including a radial sealing member operable to expand radially and form a seal within an annulus defined between the casing string and an inner wall of the wellbore;   a communication tool arranged uphole from the annular isolation apparatus and including at least one port that facilitates fluid communication between the flow path and the annulus, the at least one port being selectively opened and closed to permit and restrict fluid flow therethrough; and   a first isolation device operable to form a seal within the flow path downhole from the annular isolation apparatus and thereby isolating the shoe track from the annular isolation apparatus and the communication tool, the first isolation device including a bypass mechanism selectively operable to permit fluid flow through the first isolation device.   
     
     
         2 . The casing string assembly of  claim 1 , wherein the communication tool further includes a plurality of longitudinally spaced landing profiles therein for receiving at least second and third isolation devices thereon. 
     
     
         3 . The casing string assembly of  claim 2 , wherein the communication tool further includes a barrier member movable from a retracted position, where the barrier member does not obstruct the flow path, and an extended position, where the barrier member extends across the flow path. 
     
     
         4 . The casing string assembly of  claim 3 , wherein the communication tool further includes a sliding sleeve movable from an initial longitudinal position, where the sliding sleeve longitudinally overlaps and retains the barrier member in the retracted position, and an activated longitudinal position, where the barrier member is able to move to the extended position. 
     
     
         5 . The casing string assembly of  claim 2 , further comprising a fourth isolation device conveyable into the flow path to generate a sealed interface uphole from the communication tool. 
     
     
         6 . The casing string assembly of  claim 1 , further comprising a lower casing barrier disposed in the flow path below the first isolation device and responsive to landing the first isolation device within the casing string to move from an open position to a closed position. 
     
     
         7 . The casing string assembly of  claim 1 , wherein the shoe track includes a landing profile at an upper end thereof for receiving the first isolation device. 
     
     
         8 . A wellbore system, comprising:
 a casing string defining a flow path therethrough and extending into a wellbore to define an annulus between the casing string and a geologic formation, the casing string comprising:
 a shoe track provided at a lower end of the casing string; 
 an annular isolation apparatus arranged uphole from the shoe track and including a radial sealing member operable to expand radially and form a seal within the annulus; and 
 a communication tool arranged uphole from the annular isolation apparatus and including at least one port that facilitates fluid communication between the flow path and the annulus, the at least one port being selectively opened and closed to permit and restrict fluid flow therethrough; 
   a first isolation device operable to form a seal within the flow path downhole from the annular isolation apparatus and thereby isolating the shoe track from the annular isolation apparatus and the communication tool, the first isolation device including a bypass mechanism selectively operable to permit fluid flow through the first isolation device;   a pump in fluid communication with the flow path; and   a fluid source fluidly coupled to the pump, the fluid source including at least a cement slurry and a deactivation fluid.   
     
     
         9 . The wellbore system of  claim 8 , further comprising second and third isolation devices operable to form respective seals within the flow path within the communication tool, each of the second and third isolation devices including a respective bypass mechanism selectively operable to permit fluid flow through the second and third isolation devices. 
     
     
         10 . The wellbore system of  claim 9 , wherein the at least one port includes a first port longitudinally spaced from a second port within the communication tool, the first port disposed downhole from the second isolation device and the second port disposed longitudinally between the second and third isolation devices. 
     
     
         11 . A wellbore system, comprising:
 a casing string defining a flow path therethrough and extending into a wellbore to define an annulus between the casing string and a geologic formation, the casing string comprising:
 a shoe track provided at a lower end of the casing string and including a shoe track landing profile for receiving a first isolation device to thereby form a seal within the flow path and isolate the shoe track from the casing string above the first isolation device; 
 an annular isolation apparatus arranged uphole from the shoe track and including a radial sealing member operable to expand radially and form a seal within the annulus; and 
 a communication tool arranged uphole from the annular isolation apparatus and including at least one port between the flow path and the annulus and a barrier member movable from a retracted position with respect to the flow path and an extended position extending across the flow path; and 
   a pump in fluid communication with the flow path operable to pump at least one of a cement slurry and a deactivation fluid into the flow path.   
     
     
         12 . The wellbore system of  claim 11 , wherein the at least one port of the communication tool includes a first port and a second port disposed uphole of the first port. 
     
     
         13 . The wellbore system of  claim 12 , wherein the communication tool further includes at least a one communication tool landing profile defined longitudinally between the first port and the second port for receiving a second isolation device to thereby isolate the first port from the second port. 
     
     
         14 . The wellbore system of  claim 13 , wherein the communication tool further includes a landing profile defined uphole of the second port for receiving a third isolation device to thereby isolate the second port from the casing string above the third isolation device. 
     
     
         15 . The wellbore system of  claim 14 , wherein the landing profile defined uphole of the second port is defined on a sliding sleeve operable to maintain the barrier member in the retracted position and movable in response to receiving the third isolation device to thereby permit movement of the barrier member to the extended position. 
     
     
         16 . The wellbore system of  claim 11 , further comprising:
 cement filling the annulus above the annular isolation apparatus; and   the first isolation device landed on the shoe track landing profile and including a bypass mechanism therein selectively operable to permit a flow of the deactivation fluid therethrough into the shoe track.   
     
     
         17 . The wellbore system of  claim 16 , wherein the bypass mechanism includes a rupture disc operable to rupture in response to a predetermined pressure of the deactivation fluid. 
     
     
         18 . The wellbore system of  claim 11 , wherein the barrier member is constructed as a flapper biased to the extended position. 
     
     
         19 . The wellbore system of  claim 11 , further comprising a lower casing barrier disposed in the shoe track below the shoe track landing profile, the lower casing barrier responsive to landing the first isolation device on the shoe track landing profile to move from an open position to a closed position. 
     
     
         20 . The wellbore system of  claim 11 , further comprising an upper landing profile defined within the casing string uphole of the barrier member for receiving an upper isolation device conveyable into the flow path to generate a sealed interface uphole from the barrier member.