Skive Cut Borehole Screen End Ring

Abstract

A borehole screen such as one with a wire wrap/slip on screen on a base pipe with variable external dimensions features an end ring assembly that is one piece with a skive cut to allow fitment over a screen jacket that covers the wire wrap. The assembly has a cylindrically shaped component to go over the screen jacket and a radial component at one end oriented toward the base pipe. The assembly can be mounted over the base pipe without sliding the assembly over the end of a base pipe due to the skive cut. Relative sliding along the skive cut gets the desired dimension over the screen jacket to control sand inflow followed by the skive cut being sealed with a weld. The radial component is attached to the base pipe such that two welds complete the end assembly of the screen.

1 . An end ring assembly for a borehole screen assembly mounted over a base pipe, comprising:
 a skive cut at an angle extending between opposed ends of an end ring further comprising a cylindrical component and an integral radial component, said radial component having an adjustable inner dimension, said end ring fixated to the base pipe by welding to the base pipe as said cylindrical component abuts the screen assembly.   
     
     
         2 . The assembly of  claim 1 , wherein:
 said radial component extends from one of said ends.   
     
     
         3 . The assembly of  claim 1 , wherein:
 said skive cut defined by opposed ends that selectively abut each other during reduction of said adjustable inner dimension.   
     
     
         4 . The assembly of  claim 1 , wherein:
 said skive cut defined by opposed ends that selectively overlap each other during reduction of said adjustable inner dimension.   
     
     
         5 . The assembly of  claim 1 , wherein:
 said skive cut defined by opposed ends that selectively abut and overlap each other during reduction of said adjustable inner dimension.   
     
     
         6 . The assembly of  claim 1 , wherein:
 said skive cut defined by opposed ends that selectively slide relatively to each other during reduction of said adjustable inner dimension.   
     
     
         7 . The assembly of  claim 1 , wherein:
 said cylindrical component defines an undercut between said end ring and the base pipe having a height of the screen assembly.   
     
     
         8 . The assembly of  claim 6 , wherein:
 said skive cut comprises opposed ends secured to each other after said sliding relative to each other.   
     
     
         9 . The assembly of  claim 8 , wherein:
 said radial component is secured to the base pipe after said sliding relative to each other of said opposed ends of said skive cut and securing said ends to each other.   
     
     
         10 . The assembly of  claim 9 , wherein:
 said skive cut and said radial component are secured with welding.   
     
     
         11 . An assembly method for a borehole screen, comprising:
 overlaying a one piece end ring assembly over a screen assembly;   adjusting an internal dimension of said end ring assembly toward a base pipe using a skive cut extending from opposed ends thereof;   welding said end ring assembly to the base pipe.   
     
     
         12 . The method of  claim 11 , wherein:
 providing a cylindrical component that transitions to a radial component at one of said ends of said end ring.   
     
     
         13 . The method of  claim 11 , wherein:
 abutting opposing ends that define said skive cut when accomplishing said adjusting.   
     
     
         14 . The method of  claim 11 , wherein:
 overlapping opposing ends that define said skive cut when accomplishing said adjusting.   
     
     
         15 . The method of  claim 11 , wherein:
 overlapping and abutting opposing ends that define said skive cut when accomplishing said adjusting.   
     
     
         16 . The method of  claim 11 , wherein:
 relatively sliding opposed ends that define said skive cut when accomplishing said adjusting.   
     
     
         17 . The method of  claim 12 , wherein:
 welding an end of said radial component to the base pipe after said adjusting.   
     
     
         18 . The method of  claim 12 , wherein:
 abutting said cylindrical component to said screen assembly as a result of said adjusting.   
     
     
         19 . The method of  claim 11 , wherein:
 spreading said skive cut to mount said end ring to the base pipe between ends of the base pipe.   
     
     
         20 . The method of  claim 11 , wherein:
 providing said end ring at opposed ends of said screen assembly.