Mono-bore wellbore completion with a retrievable portion

Abstract

A first polish bore receptacle includes a first uphole end and a second downhole end. The first downhole end of the first polish bore receptacle attaches at an uphole end of a liner disposed at a downhole end of a wellbore. The first polish bore receptacle accepts a first seal assembly. A second polish bore receptacle includes a second uphole end and a second downhole end. The second polish bore receptacle is disposed uphole of the first polish bore receptacle. The second polish bore receptacle receives a second seal assembly. A retrievable ratch latch assembly connects the second downhole end of the second polish bore receptacle and the first uphole end of the first polish bore receptacle. The ratch latch assembly and the second polish bore receptacle are retrievable from within the wellbore.

1 . A wellbore completion system comprising:
 a first polish bore receptacle comprising a first uphole end and a second downhole end, the first downhole end of the first polish bore receptacle configured to attach at an uphole end of a liner configured to be disposed at a downhole end of a wellbore, the first polish bore receptacle configured to accept a first seal assembly;   a second polish bore receptacle comprising a second uphole end and a second downhole end, the second polish bore receptacle configured to be disposed uphole of the first polish bore receptacle, the second polish bore receptacle configured to receive a second seal assembly; and   a retrievable ratch latch assembly configured to connect the second downhole end of the second polish bore receptacle and the first uphole end of the first polish bore receptacle, the ratch latch assembly and the second polish bore receptacle retrievable from within the wellbore.   
     
     
         2 . The system of  claim 1 , further comprising a liner hanger configured to attach to the first uphole end of the first polish bore and to a downhole end of the retrievable ratch latch assembly, the liner hanger configured to support the first polished bore receptacle and the liner downhole of the first polished bore receptacle. 
     
     
         3 . The system of  claim 2 , further comprising a tie back receptacle positioned on the uphole end of the liner hanger, the tie back receptacle configured to receive the retrievable ratch latch assembly. 
     
     
         4 . The system of  claim 3 , wherein the tie back receptacle is less than 10 feet in length. 
     
     
         5 . The system of  claim 3 , wherein the retrievable ratch latch assembly is configured to lock into the tie back receptacle. 
     
     
         6 . The system of  claim 5 , wherein the ratch latch assembly is configured to rotatably release from the tie back receptacle. 
     
     
         7 . The system of  claim 6 , wherein the ratch latch assembly is configured to rotate in a clockwise direction to release from the tie back receptacle. 
     
     
         8 . The system of  claim 3 , wherein a diameter of the liner is less than or equal to substantially 7 inches, wherein an uphole end of the tie back receptacle comprises a plurality of threads configured to couple the uphole end of the tie back receptacle to the ratch latch assembly. 
     
     
         9 . The wellbore completion system of  claim 5 , wherein the tie back receptacle is configured to threadedly connect to the retrievable ratch latch assembly. 
     
     
         10 . The system of  claim 1 , wherein the first polish bore receptacle is less than 5 feet in length. 
     
     
         11 . The system of  claim 1 , wherein the first seal assembly comprises static seals configured to direct fluid flow through the system and prevent fluid flow from entering the wellbore through the first polish bore. 
     
     
         12 . The wellbore completion system of  claim 1 , wherein the first seal assembly is substantially three feet in length. 
     
     
         13 . The system of  claim 1 , wherein a first sub-assembly comprising the first polish bore receptacle is configured to be installed into the wellbore in a first trip, and
 wherein a second sub-assembly comprising the second polish bore receptacle and the ratch assembly is configured to be installed into the wellbore in a second trip that is separate from and after the first trip.   
     
     
         14 . A method of completing a wellbore comprising:
 installing, in a first downhole trip, a first completion sub-assembly within a wellbore, the first completion sub-assembly comprising:
 a liner located at a downhole end of the first completion sub-assembly; 
 a first polish bore receptacle attached at an uphole end of the liner; and 
 a liner hanger attached to an uphole end of the first polish bore receptacle, the liner hanger comprising a tie back receptacle; and 
   installing, in a second downhole trip that is separate from and after the first downhole trip, a second completion sub-assembly within the wellbore, the second completion sub-assembly comprising:
 a polish seal assembly configured to be positioned within the first polish bore receptacle; 
 a retrievable ratch latch assembly positioned within the tie back receptacle; and 
 an upper polish bore assembly located uphole of the retrievable ratch latch assembly. 
   
     
     
         15 . The method of  claim 14 , wherein installing the second completion sub-assembly comprises:
 receiving the retrievable ratch latch assembly within the tie back receptacle; and   locking the retrievable ratch latch assembly to the tie back receptacle.   
     
     
         16 . The method of  claim 15 , further comprising retrieving the second completion sub-assembly. 
     
     
         17 . The method of  claim 16 , wherein retrieving the second completion sub-assembly comprises applying a clockwise rotation to the retrievable ratch latch. 
     
     
         18 . A wellbore completion system comprising:
 a liner located at a downhole end of the wellbore completion system;   a lower polish bore receptacle attached at an uphole end of the liner, the lower polish bore further comprising seals;   a liner hanger attached to the uphole end of the lower polish bore, the liner hanger comprising;
 a tie back receptacle located on the uphole end of the liner hanger, the tie back receptacle further comprising an inner diameter with an ACME thread formed into the inner diameter; 
   a polish seal assembly positioned within the lower polish bore receptacle;   a retrievable ratch latch assembly positioned within the tie back receptacle; and   an upper polish bore assembly located uphole of the retrievable ratch latch assembly.   
     
     
         19 . The system of  claim 18 , wherein the seals comprise floating seals. 
     
     
         20 . The system of  claim 18 , wherein the lower polish bore receptacle is substantially three feet in length. 
     
     
         21 . The system of  claim 18 , wherein the tie back receptacle is substantially four feet in length.