ACOUSTIC LEAK FLOW ANALYZER 

The Acoustic Leak Flow Analyzer (ALFA) is a memory tool that uses an 8Hz to 60kHz frequency range to detect flow zones, identify fluid types, and detect leaks even behind casing. It features sensitive acoustic sensors, along with pressure, temperature, and casing collar locator sensors. ALFA is also used for diagnosing sustained casing pressure, reservoir analysis, formation evaluation, and locating open perforations.