TRUST
Transient rapid underbalanced surge technique
Efficiently clean up perforation tunnels by removing debris and crushed sands behind the casing.
Pressure tests pipe above the valve while running in hole
The pipe tester valve (PTV) is similar to the single-ball safety valve, but it is normally run closed and opens permanently when the disc ruptures. This tool is useful for production-type tests to allow running in dry and pressure testing the pipe string.