Coiled Tubing Injector Skate

Abstract

A coiled tubing injector skate having rollers that independently adjust position to more uniformly distribute roller loading forces is provided. The skate includes a frame and at least one roller having a roller shaft with a first end retained by the frame and a second end retained by the frame. A first resiliently compressible material is disposed between the first end of the roller shaft and the frame. A second resiliently compressible material disposed between the second end of the roller shaft and the frame.

What is claimed is: 
     
         1 . A coiled tubing injector skate comprising:
 a frame;   at least one roller having a roller shaft with a first end retained by said frame and a second end retained by said frame;   a first resiliently compressible material disposed between said first end of said roller shaft and said frame; and   a second resiliently compressible material disposed between said second end of said roller shaft and said frame.   
     
     
         2 . The coiled tubing injector skate of  claim 1 , further comprising:
 a first force distributing disc disposed between said first end of said roller shaft and said first resiliently compressible material; and   a second force distributing disc disposed between said second end of said roller shaft and said second resiliently compressible material.   
     
     
         3 . The coiled tubing injector skate of  claim 2 , wherein said first and said second resiliently compressible material is cylindrically shaped. 
     
     
         4 . The coiled tubing injector skate of  claim 3 , wherein either of said first and said second resiliently compressible material includes a spherical recess on an end thereof or an axial through-passage. 
     
     
         5 . The coiled tubing injector skate of  claim 1 , wherein said frame includes first and second flanges projecting from an inward side thereof between which said at least one roller extends, said first flange retaining said first end of said roller shaft and said second flange retaining said second end of said roller shaft. 
     
     
         6 . The coiled tubing injector skate of  claim 5 , further comprising:
 a first force distributing disc disposed between said first end of said roller shaft and said first resiliently compressible material; and   a second force distributing disc disposed between said second end of said roller shaft and said second resiliently compressible material.   
     
     
         7 . The coiled tubing injector skate of  claim 6 , wherein said first force distributing disc and said first resiliently compressible material are received by said frame; and wherein said second force distributing disc and said second resiliently compressible material are received by said frame. 
     
     
         8 . A coiled tubing injector skate comprising:
 an elongate frame having first and second flanges extending from a forward side of said elongated frame and defining an elongated channel therebetween;   a first plurality of rollers, each roller of said first plurality of rollers extending between said first and said second flanges, and having a roller shaft with a first end retained by said first flange and a second end retained by said second flange; and   a dampening element of a compressible material disposed between each of said first roller shaft ends and each of said second roller shaft ends of said first plurality of rollers.   
     
     
         9 . The coiled tubing injector skate of  claim 8 , further comprising a force distribution disc disposed between each dampening element and roller shaft end. 
     
     
         10 . The coiled tubing injector skate of  claim 9 , wherein each of said dampening elements is cylindrical shaped. 
     
     
         11 . The coiled tubing injector skate of  claim 10 , wherein each of said dampening elements and force distribution discs are received within a blind-hole.