Completion system and method for completing a wellbore

1. A system comprising:

an installed tubular disposed in a wellbore in a formation, the installed tubular including a downhole device;

a treatment tubular disposed within the installed tubular, wherein the treatment tubular includes a side pocket and extends downhole to end at a location above the downhole device of the installed tubular, wherein the treatment tubular is lowered downhole unpowered by a control line and has an inner diameter greater than an inner diameter of a treatment tubular having a control line; and

a communication line that is lowered through the treatment tubular after the treatment tubular is positioned in the wellbore, wherein the communication line includes a sensor for measuring a fluid parameter and communicating the measurement to a surface location and a shifting tool for controlling the downhole device, wherein the sensor and shifting tool are lowered into the side pocket to control the downhole device and measure the fluid parameter.

2. The system of claim 1 , wherein the communication line is not coupled to the treatment tubular when the treatment tubular is run into the wellbore.

3. The system of claim 1 , wherein the downhole device is one of: a frac valve, a screen, a valve and a mini frac valve.

4. The system of claim 1 , wherein the sensor is placed proximate the downhole device during a stimulation process or as the communication line is lowered.

5. The system of claim 1 , wherein the side pocket mandrel is proximate the downhole device.

6. The system of claim 1 , wherein the communication line includes a power line to power the sensor and wherein the sensor comprises a sensor to determine at least one of: temperature, pressure, location and water content.

7. The system of claim 1 , wherein the installed tubular and treatment tubular are run in the wellbore without control lines.

8. The system of claim 1 , wherein the installed tubular is disposed in a casing disposed in the wellbore.

9. A completion system comprising:

an installed tubular disposed in a wellbore in a formation, the installed tubular having a downhole valve;

an inner tubular disposed within the installed tubular, wherein the inner tubular and the installed tubular are run in the wellbore without a communication line and the inner tubular extends downhole to a location above the downhole valve and includes a side pocket; and

the communication line that is run into the inner tubular after the inner tubular is positioned in the wellbore, the communication line including a sensor for measuring a fluid parameter and communicating the measurement to a surface location and a shifting tool for controlling a position of the downhole valve, wherein the sensor and shifting tool are lowered into the side pocket to control the downhole device and measure the fluid parameter, wherein the inner tubular has an inner diameter greater than an inner diameter of a treatment tubular having a control line.

10. The system of claim 9 , wherein the inner tubular comprises a treatment tubular and wherein the downhole valve is a frac valve.

11. The system of claim 9 , wherein the inner tubular comprises a production tubular and wherein the downhole valve is proximate a production zone.

12. The system of claim 9 , wherein the sensor is positioned proximate an end of the communication line.

13. The system of claim 12 , wherein the side pocket mandrel is proximate an area of interest.

14. The system of claim 9 , wherein the communication line includes a power line to power the sensor.

15. A method for completing a wellbore in a formation, the method comprising:

disposing an installed tubular in a wellbore, the installed tubular including a downhole device;

disposing an inner tubular within the installed tubular, the inner tubular including a side pocket uphole of the downhole device, wherein the inner tubular and the installed tubular are run in the wellbore without a communication line to a surface of the wellbore, wherein the inner tubular extends to a location above the downhole device;

running the communication line into the inner tubular after the inner tubular is positioned in the wellbore, wherein the communication line includes a sensor and a shifting tool for controlling a position of the downhole device; and

depositing the sensor and shifting tool in the side pocket of the inner tubular proximate the downhole device, activating the downhole device with the shifting tool, monitoring a fluid parameter with the sensor and communicating the measurement to a surface location, wherein the inner tubular has an inner diameter greater than an inner diameter of a treatment tubular having a control line.

16. The method of claim 15 , wherein disposing the inner tubular within the installed tubular comprises disposing an inner tubular within the installed tubular and wherein the downhole device is a frac valve.

17. The method of claim 15 , wherein disposing the inner tubular within the installed tubular comprises disposing a production tubular within the installed tubular and wherein the downhole device is proximate a production zone.

18. The method of claim 15 , comprising positioning the sensor proximate an end of the communication line.

19. The method of claim 15 , wherein the side pocket mandrel is proximate the downhole device.

20. The method of claim 15 , wherein placing the communication line comprises placing a power line to power the sensor.

21. The method of claim 15 , wherein the sensor comprises a sensor to determine at least one of: temperature, pressure, location and water content.