Method and Apparatus For Testing And Treatment Of A Completed Well With Production Tubing In Place

Abstract

A method and apparatus is used to test and/or treat individual production zones of a well in conjunction with a conventional coiled tubing unit. This method and apparatus allows testing and treatment of a well with production tubing in place. The return flowpath for formation fluids and/or treatment fluids is through the annulus between the coiled tubing and the production tubing. The preferred embodiment uses straddle packers, but alternative embodiments may use only a single inflatable packer.

1 . A method for testing a well with production tubing in place and multiple production zones comprising: 
 connecting a downhole test assembly to a coiled tubing string, the downhole test assembly having at least one packer;    running the coiled tubing string and test assembly through the production tubing and to a depth where the test assembly is adjacent a production zone;    setting at least one packer;    flowing formation fluid from the production zone up to and out the wellhead, through the test assembly, through the coiled tubing string, and through the annulus between the coiled tubing string and the production tubing; and    testing the production zone.    
   
   
       2 . A method for fluid treatment of a well with production tubing in place and multiple production zones comprising: 
 connecting a downhole treat assembly to a coiled tubing string, the downhole treat assembly having at least one packer;    running the coiled tubing string and treat assembly through the production tubing and to a depth where the treat assembly is adjacent a production zone;    setting at least one packer;    pumping a treatment fluid down through the coiled tubing string and through the treat assembly into a single production zone; and    flowing treatment fluid and formation fluid from the production zone up to and out the wellhead, through the treat assembly, through the coiled tubing string, and through the annulus between the coiled tubing string and the production tubing.