Fluid Production by the Free-Travel Plunger Method in Low Pressure Gas Wells

The water-logging of low pressure gas wells is a serious problem in some areas, and tends to become more grievous as field pressures drop. The free travel plunger, an old idea in the petroleum industry may prove in some instances to be more economical than any other known method of meeting this problem. The paper explains the theory of the free travel plunger, presents a few case histories, and generally compares the economical and operational aspects of this method with the more popular siphon string and pumping methods.