Method for sealing wellbore leakage and shutting-off of water producing zones

Abstract

A method for sealing a wellbore includes moving a running tool with a sealing material disposed therein into a wellbore proximate a portion of the wellbore to be sealed. A cylinder is moved into the wellbore along with the running tool proximate to the portion to be sealed. The cylinder defines an annular space between an exterior thereof and an interior of the wellbore. The sealing material is deployed into the annular space. The running tool is then removed from the wellbore.

1 . A method for sealing a wellbore, comprising:
 moving a running tool with a sealing material disposed therein into a wellbore proximate a portion of the wellbore to be sealed;   moving a cylinder into the wellbore along with the running tool proximate to the portion, the cylinder defining an annular space between an exterior thereof and an interior of the wellbore;   deploying the sealing material into the annular space; and   removing the running tool from the wellbore.   
   
   
       2 . The method of  claim 1  further comprising removing the cylinder from the wellbore. 
   
   
       3 . The method of  claim 2  wherein the removing the cylinder comprises dissolving the cylinder. 
   
   
       4 . The method of  claim 1  the sealing material is activated prior to deployment. 
   
   
       4 . The method of  claim 1  wherein the activating comprises thermal fusing. 
   
   
       5 . The method of  claim 1  wherein the activating comprises thermochemical activation. 
   
   
       6 . The method of  claim 1  wherein the activating comprises chemical activation. 
   
   
       7 . The method of  claim 1  wherein the sealing material is pumped in from surface through at least one of one of a tubular in the wellbore to be sealed and through an intervention tubing inserted into the wellbore.