Non-metallic expandable tubular

Abstract

A system includes a tubular disposed inside of the casing that includes an inner circumferential surface delineating a conduit, an external circumferential surface, a first end, and a second end located uphole from the first end in the well. The system also includes a slip disposed circumferentially around the external circumferential surface of the tubular configured to grip an inner surface of the casing. The system also includes an expansion subassembly configured to expand radially when activated and expand an area of the tubular around the expansion subassembly from the initial outer diameter to a final outer diameter. The system also includes a string that extends from a surface location through the conduit of the tubular to the expansion subassembly and configured to pull the expansion subassembly up-hole.

1 . A system for lining a casing in a well, the system comprising:
 a tubular disposed inside of the casing and comprising an inner circumferential surface delineating a conduit, an external circumferential surface, a first end, and a second end located uphole from the first end in the well, wherein the tubular is configured to expand from an initial outer diameter to a final outer diameter and the final outer diameter is equal to an inner diameter of the casing;   an expansion subassembly removably connected to the inner circumferential surface at the first end of the tubular, wherein the expansion subassembly comprises a body that is configured to expand radially using hydraulic force within the body or an electric motor that expands the body, wherein expansion of the expansion subassembly body correspondingly expands an area of the tubular around the expansion subassembly from the initial outer diameter to the final outer diameter;   a string extending from a surface location through the conduit of the tubular to the expansion subassembly at the second end of the tubular, wherein the string is configured to pull the expansion subassembly in an up-hole direction to expand a full length of the tubular from the initial outer diameter to the final outer diameter; and   a slip disposed circumferentially around the external circumferential surface of the tubular and configured to grip into an inner surface of the casing to hold the tubular up within the casing as the expansion subassembly is pulled in the up-hole direction within the tubular.   
     
     
         2 . The system of  claim 1 , wherein the tubular is manufactured as a singular non-metallic tube with no connections. 
     
     
         3 . The system of  claim 1 , wherein the tubular is made of a polymer. 
     
     
         4 . The system of  claim 1 , wherein the tubular is run into the casing using the string connected to the tubular via the expansion subassembly. 
     
     
         5 . The system of  claim 1 , wherein the slip is configured to grip onto the inner surface of the casing when the is radially expanded by the expansion subassembly. 
     
     
         6 . The system of  claim 1 , wherein the slip is configured to grip into the inside of the casing when independently activated. 
     
     
         7 . The system of  claim 1 , wherein the expansion subassembly is removably connected to the tubular via a friction connection. 
     
     
         8 . The system of  claim 1 , wherein the expansion subassembly is removably connected to the tubular via shear pins. 
     
     
         9 . The system of  claim 1 , further comprising a seal disposed circumferentially around the external circumferential surface of the tubular and the seal is configured to seal against the inner surface of the casing in a fluid-tight fashion when expanded by the expansion subassembly. 
     
     
         10 . The system of  claim 1 , further comprising a seal integrated into the slip and the seal is configured to seal against the casing in a fluid-tight fashion when the slip grips into the inner surface of the casing. 
     
     
         11 . A method for lining a casing in a well, the method comprising:
 forming a casing lining system by:
 disposing a slip circumferentially around an external circumferential surface of a tubular having a first end and a second end, 
 connecting an expansion subassembly to an inner circumferential surface of the tubular proximate the first end of the tubular, and 
 connecting the expansion subassembly to a downhole end of a string; 
   running the casing lining system into an interior of the casing by lowering the string into the casing, wherein the first end of the tubular enters the casing prior to the second end of the tubular;   activating the slip to grip into an inner surface of the casing thereby causing the tubular to be fixed to the inner surface of the casing;   activating the expansion subassembly to cause a body of the expansion subassembly to radially expand using hydraulic force within the body or using an electric motor to expand the body, wherein expansion of the expansion subassembly body thereby correspondingly expands an area of the tubular around the expansion subassembly from an initial outer diameter to a final outer diameter;   disconnecting the expansion subassembly from the inner circumferential surface of the tubular; and   pulling, using the string, the expansion subassembly in an up-hole direction through the tubular to expand a full length of the tubular from the initial outer diameter to the final outer diameter, wherein the final outer diameter is equal to an inner diameter of the casing, and wherein the slips hold the tubular in place within the casing as the expansion subassembly is pulled in the up-hole direction.   
     
     
         12 . The method of  claim 11 , wherein activating the slip comprises radially expanding an area of the tubular on which the slip is disposed, using the expansion subassembly. 
     
     
         13 . The method of  claim 11 , wherein activating the slip comprises activating the slip itself independent of the radial expansion of the tubular. 
     
     
         14 . The method of  claim 11 , wherein the expansion subassembly is connected to the inner circumferential surface of the tubular via a friction connection. 
     
     
         15 . The method of  claim 14 , wherein disconnecting the expansion subassembly from the inner circumferential surface of the tubular comprises pulling, using the string, the expansion subassembly in an up-hole direction once the slip is engaged with the casing, thereby causing the expansion subassembly to slide against the inner circumferential surface of the tubular. 
     
     
         16 . The method of  claim 11 , wherein the expansion subassembly is connected to the inner circumferential surface of the tubular via shear pins. 
     
     
         17 . The method of  claim 16 , wherein disconnecting the expansion subassembly from the inner circumferential surface of the tubular comprises pulling, using the string, the expansion subassembly in an up-hole direction once the slip is engaged with the casing to shear the shear pins. 
     
     
         18 . The method of  claim 11 , further comprising sealing between the external circumferential surface of the tubular and the inner surface of the casing using a seal disposed circumferentially around the external circumferential surface of the tubular. 
     
     
         19 . The method of  claim 11 , further comprising sealing between the external circumferential surface of the tubular and the inner surface of the casing using a seal integrated into the slip. 
     
     
         20 . The method of  claim 11 , further comprising milling the tubular from the casing.