Coiled tubing system and method

Abstract

Disclosed herein is a downhole coiled tubing system. The system includes, a bottom hole assembly, a coiled tubing string attached to the bottom hole assembly, and a conductor comprising an electrical signal carrier disposed within a control line, the conductor is disposed within the coiled tubing string and maintained substantially parallel with the coiled tubing string throughout the coiled tubing string and electrically coupled to the bottom hole assembly.

1 . A downhole coiled tubing system comprising:
 a bottom hole assembly;   a coiled tubing string attached to the bottom hole assembly; and   a conductor comprising an electrical signal carrier disposed within a control line, the conductor being disposed within the coiled tubing string and maintained substantially parallel with the coiled tubing string throughout the coiled tubing string and electrically coupled to the bottom hole assembly.   
   
   
       2 . The downhole coiled tubing system as claimed in  claim 1  wherein the bottom hole assembly includes mechanical actuatable components. 
   
   
       3 . The downhole coiled tubing system as claimed in  claim 1  wherein the bottom hole assembly includes completion equipment. 
   
   
       4 . The downhole coiled tubing system as claimed in  claim 3  wherein the completion equipment includes cementing equipment. 
   
   
       5 . The downhole coiled tubing system as claimed in  claim 4  wherein the completion equipment includes liner release equipment. 
   
   
       6 . The downhole coiled tubing system as claimed in  claim 1  wherein the conductor transmits power to the bottom hole assembly. 
   
   
       7 . The downhole coiled tubing system as claimed in  claim 1  wherein the conductor transmits data therethrough between the bottom hole assembly and a remote location. 
   
   
       8 . The downhole coiled tubing system as claimed in  claim 1  wherein the conductor further conveys fluid pressure. 
   
   
       9 . The downhole coiled tubing system as claimed in  claim 1  wherein the conductor is loosely disposed within the coiled tubing string but without slack in the conductor. 
   
   
       10 . The downhole coiled tubing system as claimed in  claim 1  wherein the conductor has an elongation factor of about 45 percent. 
   
   
       11 . The downhole coiled tubing system as claimed in  claim 1  wherein the conductor has an elongation factor at least as great as that of the coiled tubing string. 
   
   
       12 . The downhole coiled tubing system as claimed in  claim 1  wherein the downhole coiled tubing system remains in use sufficiently patent to pass other well equipment through the coiled tubing string. 
   
   
       13 . The downhole coiled tubing system as claimed in  claim 12  wherein the other well equipment includes a tripping ball. 
   
   
       14 . The downhole coiled tubing system as claimed in  claim 1  wherein the electrical signal carrier is a copper wire. 
   
   
       15 . The downhole coiled tubing system as claimed in  claim 1  wherein the control line comprises nickel-chromium alloy. 
   
   
       16 . The downhole coiled tubing system as claimed in  claim 1  wherein the electrical signal carrier is loosely disposed within the control line. 
   
   
       17 . A method of carrying out operations in a wellbore comprising:
 running a downhole coiled tubing system comprising:   a bottom hole assembly;   a coiled tubing string attached to the bottom hole assembly; and   a conductor comprising an electrical signal carrier disposed within a control line, the conductor being disposed within the coiled tubing string and electrically coupled to the bottom hole assembly, into the wellbore;   maintaining the conductor substantially parallel to the coiled tubing string throughout the coiled tubing string;   powering the bottom hole assembly with the conductor; and   running well equipment through the coiled tubing string.   
   
   
       18 . The method as claimed in  claim 17  further comprising communicating data between a remote location and the bottom hole assembly along the conductor. 
   
   
       19 . The method as claimed in  claim 17  wherein the running well equipment includes running a tripping ball. 
   
   
       20 . A downhole coiled tubing system, comprising:
 a coiled tubing string;   a bottom hole assembly in operable communication with the coiled tubing; and   a control line located within the coiled tubing string in operable communication with the bottom hole assembly and configured to elongate and contract substantially in unison with the coiled tubing string to avoid slacking of the control line within the coiled tubing string.