Valve assembly for a cementing operation

Abstract

A valve assembly for use in a wellbore includes a tubular body; a valve disposed in the tubular body and configured to control fluid communication through the tubular body; and a compound for coupling the valve to the tubular body. The upper end of the compound is configured to receive a plug, and the upper end is spaced from an inner surface of the tubular body.

1 . A valve assembly for use in a wellbore, comprising:
 a tubular body;   a valve disposed in the tubular body and configured to control fluid communication through the tubular body; and   a compound for coupling the valve to the tubular body; wherein an upper end of the compound is configured to receive a plug and wherein the upper end is spaced from an inner surface of the tubular body.   
     
     
         2 . The assembly of  claim 1 , wherein the compound includes a tapered outer portion extending outwardly from the upper end toward the inner surface the tubular body. 
     
     
         3 . The assembly of  claim 2 , wherein an angle between the inner surface and the tapered outer portion is from 5° to 60°. 
     
     
         4 . The assembly of  claim 1 , further comprising a landing plate disposed on the upper end. 
     
     
         5 . The assembly of  claim 1 , wherein the tubular body includes an internally profiled portion. 
     
     
         6 . The assembly of  claim 5 , wherein the internally profiled portion includes:
 a first radiused portion culminating in a first minimum radius toward an exterior of the tubular body; and   a second radiused portion culminating in a second minimum radius toward an interior of the tubular body.   
     
     
         7 . The assembly of  claim 5 , wherein the internally profiled portion includes a plurality of angled wickers. 
     
     
         8 . The apparatus of  claim 5 , wherein the internally profiled portion is undulated. 
     
     
         9 . The assembly of  claim 5 , wherein the first minimum radius is larger than the second minimum radius. 
     
     
         10 . The assembly of  claim 5 , wherein an outer surface of the compound tapers outwardly from the upper end toward the inner surface of the tubular body. 
     
     
         11 . The assembly of  claim 10 , wherein the compound includes a tapered outer portion extending outwardly from the upper end toward the inner surface the tubular body. 
     
     
         12 . The assembly of  claim 11 , wherein the tapered outer portion intersects the internal profiled portion of the tubular body. 
     
     
         13 . The assembly of  claim 1 , wherein the valve is a one-way valve. 
     
     
         14 . The assembly of  claim 1 , wherein the upper end extends into a connection of the tubular body. 
     
     
         15 . A downhole tool assembly, comprising:
 a plug having a landing surface; and   a valve assembly, having:
 a tubular body; 
 a valve disposed in the tubular body and configured to control fluid communication through the tubular body; and 
 a compound for coupling the valve to the tubular body; wherein an upper end of the compound is configured to receive the landing surface of the plug and wherein a ratio of an outer diameter of the upper end to an outer diameter of the landing surface is from 0.8 to 1.2. 
   
     
     
         16 . The assembly of  claim 15 , wherein the compound includes a tapered outer portion extending outwardly from the upper end toward an inner surface the tubular body. 
     
     
         17 . The assembly of  claim 16 , wherein an angle between the inner surface and the tapered outer portion is from 5° to 60°. 
     
     
         18 . The assembly of  claim 17 , further comprising a landing plate disposed on the upper end for receiving the landing surface. 
     
     
         19 . The assembly of  claim 15 , wherein tubular body includes an internally profiled portion. 
     
     
         20 . The assembly of  claim 15 , wherein the valve assembly includes two valves.