High temperature and pressure element system

Abstract

A high temperature and high pressure packer and method for sealing an annulus in a wellbore is provided. The packer can withstand temperatures up to 450° F. and differential pressures up to 15,000 psi. In one aspect, the packer comprises a body; and a sealing system disposed about the body including an element having an anti-extrusion ring at an end thereof, wherein the sealing system is compressible in length and expandable in outer diameter to seal the annulus. In another aspect, the method comprises running a body into the wellbore, the body comprising a sealing system comprising an element and an anti-extrusion ring, wherein the element is disposed about the body proximate the anti-extrusion ring, and wherein an extrusion ring is disposed substantially on an inner diameter of the anti-extrusion ring; flowing the extrusion ring radially outward and axially across the body in a direction opposite the element to fill a portion of the annulus; and radially expanding the element to fill a remaining portion of the annulus.

1 . A packer for sealing an annulus in a wellbore, comprising: 
 a body; and    a sealing system disposed about the body including an element having an anti-extrusion ring at an end thereof, wherein the sealing system is compressible in length and expandable in outer diameter to seal the annulus.    
     
     
         2 . The packer of  claim 1 , further comprising an extrusion ring disposed substantially on an inner diameter of the anti-extrusion ring such that flow of the extrusion ring in a direction opposite the element is inhibited by the anti-extrusion ring.  
     
     
         3 . The packer of  claim 2 , wherein the anti-extrusion ring is moveable in the direction opposite the element.  
     
     
         4 . The packer of  claim 1 , wherein the sealing system is disposed about the body between a first and second expansion ring.  
     
     
         5 . The packer of  claim 3 , wherein the anti-extrusion ring comprises a lip or extrusion disposed thereon to act as a carrier when the extrusion ring flows across the body.  
     
     
         6 . The packer of  claim 2 , wherein the extrusion ring comprises a filler ring and a back-up ring.  
     
     
         7 . The packer of  claim 6 , wherein the back-up ring is disposed about the body adjacent the element and the filler ring is disposed about the body adjacent the back-up ring.  
     
     
         8 . The packer of  claim 7 , wherein the back-up ring expands radially outward from the body and axially across the body to fill a portion of a void formed within the annulus.  
     
     
         9 . The packer of  claim 8 , wherein the anti-extrusion ring moves in conjunction with the back-up ring.  
     
     
         10 . The packer of  claim 8 , wherein the element expands radially outward from the body to fill a remaining portion of the void formed within the annulus.  
     
     
         11 . The packer of  claim 1 , wherein the sealing system comprises a first and second anti-extrusion ring disposed on each end of the element and wherein the first and second anti-extrusion rings are disposed substantially on an outer diameter of a first and second extrusion ring.  
     
     
         12 . The packer of  claim 6 , wherein a containment ring is disposed substantially on an outer diameter of the filler ring such that flow of the filler ring across the body is inhibited by the containment ring.  
     
     
         13 . A packer for sealing an annulus in a wellbore, comprising: 
 a body;    a retaining system comprising an expansion ring disposed about the body; and    a sealing system comprising an element and an anti-extrusion ring, wherein the element is disposed about the body proximate the anti-extrusion ring, and wherein an extrusion ring is disposed substantially on an inner diameter of the anti-extrusion ring such that flow of the extrusion ring in a direction opposite the element is inhibited by the anti-extrusion ring.    
     
     
         14 . The packer of  claim 13 , wherein the anti-extrusion ring is moveable in the direction opposite the element.  
     
     
         15 . The packer of  claim 14 , wherein the anti-extrusion ring comprises a lip or extrusion disposed thereon to act as a carrier when the extrusion ring flows across the body.  
     
     
         16 . The packer of  claim 13 , wherein the retaining system comprises a first and second expansion ring, and wherein actuation of the first and second expansion ring forms a void within the annulus.  
     
     
         17 . The packer of  claim 16 , wherein the extrusion ring expands radially outward from the body and axially across the body to fill a portion of the void, and wherein the anti-extrusion ring moves in conjunction with the extrusion ring.  
     
     
         18 . The packer of  claim 17 , wherein the element expands radially outward from the body to fill a remaining portion of the void.  
     
     
         19 . The packer of  claim 13 , wherein the sealing system comprises a first and second anti-extrusion ring disposed on each end of the element and wherein the first and second anti-extrusion rings are disposed substantially on an outer diameter of a first and second extrusion ring.  
     
     
         20 . A method for sealing an annulus in a wellbore, comprising: 
 running a body into the wellbore, the body comprising: 
 a sealing system comprising an element and an anti-extrusion ring, wherein the element is disposed about the body proximate the anti-extrusion ring, and wherein an extrusion ring is disposed substantially on an inner diameter of the anti-extrusion ring;  
   flowing the extrusion ring radially outward and axially across the body in a direction opposite the element to fill a portion of the annulus; and    radially expanding the element to fill a remaining portion of the annulus.    
     
     
         21 . The method of  claim 20 , wherein flowing the extrusion ring radially outward and axially across the body is inhibited by the anti-extrusion ring.  
     
     
         22 . A packer for sealing an annulus in a wellbore, comprising: 
 a body; and    a sealing system disposed about the body including an element having an extrusion ring at each end thereof, wherein the sealing system is compressible in length and expandable in outer diameter to seal the annulus.    
     
     
         23 . The packer of  claim 22 , further comprising an anti-extrusion ring disposed substantially on an outer diameter of each extrusion ring such that flow of the extrusion ring in a direction opposite the element is inhibited by the anti-extrusion ring.  
     
     
         24 . The packer of  claim 23 , wherein the anti-extrusion ring is moveable in the direction opposite the element.  
     
     
         25 . The packer of  claim 22 , wherein the sealing system is disposed about the body between a first and second expansion ring.  
     
     
         26 . The packer of  claim 24 , wherein the anti-extrusion ring comprises a lip or extrusion disposed thereon to act as a carrier when the extrusion ring flows across the body.  
     
     
         27 . The packer of  claim 23 , wherein the extrusion ring comprises a filler ring and a back-up ring.  
     
     
         28 . The packer of  claim 27 , wherein the back-up ring is disposed about the body adjacent the element and the filler ring is disposed about the body adjacent the back-up ring.  
     
     
         29 . The packer of  claim 28 , wherein the back-up ring expands radially outward from the body and axially across the body to fill a portion of a void formed within the annulus.  
     
     
         30 . The packer of  claim 29 , wherein the anti-extrusion ring moves in conjunction with the back-up ring.  
     
     
         31 . The packer of  claim 29 , wherein the element expands radially outward from the body to fill a remaining portion of the void formed within the annulus.