Foam-assisted lift (FAL) is a well-established gas well deliquification technique to prolonge stable production from depleting, liquid loading gas wells. Field tests were carried out to delineate the operating envelope of FAL in PDO liquid loading gas wells. The field tests in five different wells consisted of step-down tests with and without continuous downhole injection of liquid foamer, to establish the associated reduction of the minimum stable gas rate. At the same time, the produced fluids were sampled and analyzed to diagnose potential impact on surface processing. The step-down tests were carried out using five different foamers that passed screening based on laboratory testing. FAL reduced the minimum stable rate by more than 40% independent of water cut i.e. for BS&W ranging between 14% and 96%. The step-down procedure required a surface choke which resulted in a significant reduction of the minimum stable gas rate, independent of the application of FAL.