Slip stop friction sub

Abstract

A device, system, and/or method for hanging a casing in a borehole operation are provided. A gripping feature may be included on an inner surface of a larger casing. Then, a smaller casing is positioned within the larger casing, and the outer diameter of the smaller casing or the hanging mechanism is expanded to contact the larger casing's gripping feature. The result is a secure engagement between the two casings. This gripping feature may comprise grooves cut into the inner surface of the larger casing wherein the grooves may have a groove density, an uphole groove angle, a downhole groove, an orientation, and other features that improve the engagement between the two casings.

What is claimed is: 
     
         1 . A system for hanging a casing in a borehole operation, comprising:
 a first casing having a wall thickness and an inner surface defining a first partially enclosed volume, said inner surface of said first casing having a gripping feature, wherein said gripping feature extends around at least a portion of an inner perimeter of said inner surface;   a second casing having an outer surface with an initial diameter, said second casing is at least partially disposed within said first partially enclosed volume defined by said inner surface of said first casing, wherein said second casing has an inner surface defining a second partially enclosed volume; and   a setting tool at least partially disposed within said second partially enclosed volume, said setting tool adapted to expand at least a portion of said outer surface of said second casing to a final diameter that is larger than said initial diameter, wherein said outer surface of said second casing presses against said gripping feature to secure said second casing to said first casing.   
     
     
         2 . The system of  claim 1 , wherein said inner surface of said first casing comprises a plurality of gripping features. 
     
     
         3 . The system of  claim 1 , wherein said gripping feature comprises a plurality of grooves that extend around at least a portion of said inner perimeter of said inner surface of said first casing. 
     
     
         4 . The system of  claim 3 , wherein said plurality of grooves comprises a groove density, wherein said groove density is between approximately 0.394 grooves per cm and 15.74 grooves per cm. 
     
     
         5 . The system of  claim 3 , wherein a groove of said plurality of grooves comprises a groove depth, wherein said groove depth is between approximately 0.0508 cm and 0.508 cm. 
     
     
         6 . The system of  claim 3 , wherein a groove of said plurality of grooves comprises a downhole angle, wherein said downhole angle is between approximately 15° and 90°, wherein a groove of said plurality of grooves comprises an uphole angle, and wherein said uphole angle is between approximately 0° and 90°. 
     
     
         7 . The system of  claim 1 , wherein said second casing is a liner. 
     
     
         8 . The system of  claim 1 , wherein said gripping feature has a length along the longitudinal direction of said inner surface of said first casing, wherein said length of said gripping feature is between approximately 0.635 cm and 1219.2 cm. 
     
     
         9 . The system of  claim 1 , wherein said gripping feature is a first plurality of grooves and a second plurality of grooves that extend around at least a portion of said inner perimeter of said inner surface of said first casing and form a criss-crossing pattern. 
     
     
         10 . The system of  claim 9 , wherein said first plurality of grooves is oriented at an angle relative to said second plurality of grooves, and wherein said first plurality of grooves is oriented perpendicular to said second plurality of grooves. 
     
     
         11 . A method for hanging a tubular in a borehole operation, comprising:
 providing a first tubular having an inner surface with an inner diameter, wherein a plurality of grooves is positioned on said inner surface of said first tubular;   providing a second tubular having an outer surface and an inner surface, said outer surface having an outer diameter and said inner surface having an inner diameter, wherein said outer diameter of said second tubular is smaller than said inner diameter of said first tubular;   positioning said second tubular at least partially within said first tubular such that said plurality of grooves are positioned over said outer surface of said second tubular; and   pressing a setting tool, which has an outer surface with an outer diameter that is larger than said inner diameter of said second tubular, into said second tubular to deform said second tubular and expand at least a portion of said outer diameter of said second tubular into said plurality of grooves of said first tubular to secure said second tubular to said first tubular.   
     
     
         12 . The method of  claim 11 , wherein each groove in said plurality of grooves has an uphole angle and a downhole angle measured from a lateral plane through said first tubular, and wherein said downhole angle is nonzero. 
     
     
         13 . The method of  claim 12 , wherein at least one groove in said plurality of grooves has one of a distinct uphole angle and a distinct downhole angle from another groove in said plurality of grooves. 
     
     
         14 . The method of  claim 11 , wherein said plurality of grooves comprises a groove density, wherein said groove density is between approximately 0.394 grooves per cm and 15.74 grooves per cm. 
     
     
         15 . The method of  claim 11 , wherein said plurality of grooves extends around an inner perimeter of said inner surface of said first tubular. 
     
     
         16 . A tubular for a borehole operation comprising:
 a body extending between a first end and a second end, said body having an inner surface;   a first finish on said first end of said body;   a second finish on said second end of said body, wherein said second finish is distinct from said first finish; and   a plurality of grooves positioned on said inner surface of said body, each groove in said plurality of grooves having an uphole angle and a downhole angle measured from a lateral plane through said body, wherein said downhole angle is nonzero.   
     
     
         17 . The tubular of  claim 16 , wherein at least one groove in said plurality of grooves has one of a distinct uphole angle and a distinct downhole angle from another groove in said plurality of grooves. 
     
     
         18 . The tubular of  claim 16 , wherein said plurality of grooves comprises a groove density, wherein said groove density is between approximately 0.394 grooves per cm and 15.74 grooves per cm. 
     
     
         19 . The tubular of  claim 16 , wherein said plurality of grooves extends around an inner perimeter of said inner surface of said first tubular. 
     
     
         20 . The tubular of  claim 16 , further comprising:
 a second plurality of grooves positioned on said inner surface of said body.