Epoxy secured web collar

Abstract

Embodiments of the invention include an apparatus, an assembly, and a kit for securing a web collar to a tubular member. According to one embodiment, a sleeve has a plurality of apertures selectively sized and spaced to form a web collar. The web collar is positioned on a segment of casing and is secured in place with set screws. Epoxy is disposed into the apertures and cured. The cured epoxy deposits on the casing are analogous to keys welded to a shaft, extending outwardly into the apertures to secure the web collar and the centralizer.

1 . A method, comprising:
 positioning a web collar on a tubular member, the web collar having a plurality of circumferentially disposed apertures;   threading at least one threaded member through the web collar to frictionally engage the tubular member;   disposing an uncured epoxy into selected apertures; and   curing the epoxy to bond with the tubular member.   
   
   
       2 . The method of  claim 1 , comprising:
 disposing a centralizer on the tubular member adjacent to the web collar; wherein the web collar is configured for limiting axial movement of the centralizer along the tubular member.   
   
   
       3 . The method of  claim 1 , wherein the step of disposing uncured epoxy into the apertures comprises applying epoxy with an implement, by hand. 
   
   
       4 . The method of  claim 3 , wherein the implement is a putty knife. 
   
   
       5 . The method of  claim 1 , further comprising:
 taping off the selected apertures.   
   
   
       6 . The method of  claim 5 , further comprising:
 disposing uncured epoxy into other apertures of the web collar; and   disposing uncured epoxy into other apertures.   
   
   
       7 . The method of  claim 1 , further comprising:
 forming the stop collar by perforating a sheet of material to form a web, bending the web to position opposing ends in proximity to one another, and joining a seam between the opposing ends.   
   
   
       8 . An apparatus, comprising:
 a tubular member;   a web collar disposal on a tubular member, the web collar having a bore for being received on the tubular member, and a plurality of circumferentially disposed apertures;   a plurality of epoxy deposits each disposed within a respective one of the apertures, the epoxy deposits being bonded to the tubular member interior to the apertures, to secure the web collar to the tubular member; and   a centralizer disposed adjacent to stop collar, wherein the web collar is configured for limiting axial movement of the centralizer along the tubular member.   
   
   
       9 . The apparatus of  claim 8 , wherein the at least one threaded member comprises a set screw, and wherein the web collar has one or more radial holes for threadably receiving the one or more set screws. 
   
   
       10 . The apparatus of  claim 8 , wherein the plurality of apertures occupies at least 50% of the surface area of the web collar. 
   
   
       11 . The apparatus of  claim 8 , wherein the internal diameter of the web collar is slightly larger than the external diameter of the tubular member. 
   
   
       12 . A kit for spacing a tubular member within a borehole, comprising:
 a web collar having a plurality of circumferentially disposed apertures and a bore for receiving the tubular member;   a quantity of curable resin; and   an implement for applying the curable resin to the plurality of apertures.   
   
   
       13 . The kit of  claim 12 , further comprising:
 at least one threaded member configured for passing through a wall of the web collar to frictionally engage the tubular member.