(n.) Production Testing. A gas-lift system that recycles the injected gas using compressors. This closed system does not require an external sourceof gas for operating the gas-lift system. More Details: The Pressure's On: Innovations in Gas Lift
Schlumberger Ltd. (The World's Leading Supplier Of Technology, Integrated Project Management And Information Solutions to Customers Working in The Oil and Gas Industry Worldwide), Schlumberger Oilfield Glossary Cedex, France 2014. http://www.glossary.oilfield.slb.com/en/Terms/sym/ a.aspx, (Ergo - Brit) {766}