The AW type test tool is primarily used to pressure test production tubing strings.

Typically used for pressure testing tubing integrity during or after completions operations.

The AW type test plug can be dropped and pumped into place, or be run with slickline. 

Applications:

Pressure testing production tubing if a hole or communication is suspected.

Checking tubing integrity before bottom holes pumps are installed or a activated.

used to retain fluid or chemical in the tubing string during maintenance of the wellbore.