Resin impregnated continuous fiber plug with non-metallic element system

Abstract

A non-metallic element system is provided which can effectively seal or pack-off an annulus under elevated temperatures. The element system can also resist high differential pressures without sacrificing performance or suffering mechanical degradation, and is considerably faster to drill-up than a conventional element system. In one aspect, the composite material comprises an epoxy blend reinforced with glass fibers stacked layer upon layer at about 30 to about 70 degrees. A downhole tool, such as a bridge plug, frac-plug, or packer, is also provided. The tool comprises a first and second support ring having one or more tapered wedges, a first and second expansion ring, and a sealing member disposed between the expansion rings and the support rings.

1 . A non-metallic element system, comprising: 
 a first and second support ring having one or more tapered wedges;    a first and second expansion ring; and    a sealing member disposed between the expansion and support rings.    
     
     
         2 . The element system of  claim 1 , wherein one or more of the following selected from a group consisting of the support rings and expansion rings include an epoxy blend reinforced by glass fibers stacked in layers angled at about 30 to about 70 degrees.  
     
     
         3 . The element system of  claim 1 , wherein the tapered wedges extend radially and engage an inner surface of a surrounding tubular.  
     
     
         4 . The element system of  claim 3 , wherein the expansion ring flows and fills a gap formed between the extended wedges.  
     
     
         5 . The element system of  claim 1 , wherein the expansion ring has an outer diameter complimenting an angle of the tapered wedges.  
     
     
         6 . A downhole tool, comprising: 
 a body; and    a non-metallic element system disposed about the body, wherein the element system comprises: 
 a first and second support ring having one or more tapered wedges;  
 a first and second expansion ring; and  
 a sealing member disposed between the expansion and support rings.  
   
     
     
         7 . The tool of  claim 6 , wherein the non-metallic element system comprises an epoxy blend reinforced by glass fibers stacked in layers angled at about 30 to about 70 degrees.  
     
     
         8 . The tool of  claim 6 , wherein the tapered wedges extend radially and engage an inner surface of a surrounding tubular.  
     
     
         9 . The tool of  claim 8 , wherein the expandable ring flows and fills a gap formed between the extended wedges.  
     
     
         10 . The tool of  claim 6 , wherein the expandable ring has an outer diameter complimenting an angle of the tapered wedges.  
     
     
         11 . The tool of  claim 10 , wherein the tapered wedges are disposed about the outer diameter of the expandable ring.  
     
     
         12 . The tool of  claim 6 , wherein the tapered wedges are angled at about 15 to about 45 degrees.  
     
     
         13 . The tool of  claim 6 , wherein the outer diameter of the expandable ring is angled at about 15 to about 45 degrees.  
     
     
         14 . The tool of  claim 8 , further comprising one or more slips disposed about the body, the slips having one or more serrations to engage the inner surface of the surrounding tubular.  
     
     
         15 . A downhole tool, comprising: 
 a body; and    a non-metallic element system disposed about the body, wherein the element system comprises: 
 a first and second support ring having one or more tapered wedges;  
 a first and second expansion ring; and  
 a sealing member disposed between the expansion and support rings;  
 wherein the tapered wedges expand radially and engage an inner surface of a surrounding tubular, and wherein the expandable ring flows and fills a gap formed between the expanded wedges.  
   
     
     
         16 . The tool of  claim 15 , wherein the expandable ring has an outer diameter complimenting an angle of the tapered wedges.  
     
     
         17 . The tool of  claim 15 , wherein the tapered wedges are angled at about 15 to about 45 degrees.  
     
     
         18 . The tool of  claim 15 , wherein the outer surface of the expandable ring is angled at about 15 to about 45 degrees.  
     
     
         19 . The tool of  claim 16 , wherein the tapered wedges are disposed about the outer diameter of the expandable ring.  
     
     
         20 . The tool of  claim 15 , further comprising one or more slips disposed about the body, the slips having one or more serrations to engage the inner surface of the surrounding tubular.