Zonal isolation system

Abstract

A zonal isolation system for use in a well is provided. The zonal isolation system includes a zonal isolation tool, at least one anchor, and at least one polished bore receptacle. The zonal isolation system may include a setting string for activation of the zonal isolation tool and/or the at least one anchor. The zonal isolation system may also include an isolation string for maintaining separation zones during production or injection of the well.

1 . A zonal isolation system for use in a well, comprising:
 a zonal isolation tool;   at least one anchor; and   at least one polished bore receptacle.   
   
   
       2 . The system of  claim 1 , further comprising a second polished bore receptacle wherein the at least one polished bore receptacle is placed above the zonal isolation tool and the second polished bore receptacle is place below the zonal isolation tool. 
   
   
       3 . The system of  claim 1 , further comprising a second anchor wherein the at least one anchor is placed above the zonal isolation tool and the second anchor is place below the zonal isolation tool. 
   
   
       4 . The system of  claim 1 , further comprising an expansion joint for allowing for movement of parts and tubulars due to external forces caused by temperature fluctuations downhole. 
   
   
       5 . The system of  claim 1 , further comprising a setting string for activating one or more parts of the zonal isolation system. 
   
   
       6 . The system of  claim 5 , further comprising a isolation string  94  for maintaining separation of zones during production or injection. 
   
   
       7 . The system of  claim 3 , wherein the at least one anchor and the second anchor are classical slip anchors. 
   
   
       8 . The system of  claim 3 , wherein the at least one anchor and the second anchor are two-stage slip anchors. 
   
   
       9 . The system of  claim 3 , wherein the at least one anchor and the second anchor are self locking anchors. 
   
   
       10 . The system of  claim 3 , wherein the at least one anchor and the second anchor are penetrator-type anchors. 
   
   
       11 . A method of forming zonal isolation in a well, comprising
 a) positioning a zonal isolation tool in a wellbore between two zones;   b) enabling setting the zonal isolation tool using polished bore receptacles;   c) preventing movement of the zonal isolation tool using anchors; and   c) setting the zonal isolation tool using a setting string positioned across the polished bore receptacles.   
   
   
       12 . The method of  claim 11 , further comprising an expansion joint for allowing for movement of parts and tubulars due to external forces caused by temperature fluctuations downhole. 
   
   
       13 . The method of  claim 11 , further comprising an isolation string  94  for maintaining separation of zones during production or injection. 
   
   
       14 . The method of  claim 11 , wherein the at least one anchor and the second anchor are classical slip anchors. 
   
   
       15 . The method of  claim 11 , wherein the anchors are two-stage slip anchors. 
   
   
       16 . The method of  claim 11 , wherein the anchors are self locking anchors. 
   
   
       17 . The method of  claim 11 , wherein the anchors are penetrator-type anchors. 
   
   
       18 . The method of  claim 11 , wherein one of the polished bore receptacles is placed above the zonal isolation tool and the other polished bore receptacle is places below the zonal isolation tool.