... to the surface. artificial lift system line pressure rise velocity gaul model flow line plunger lift flow rate leakage bumper spring Time Period average rise velocity Upstream Oil & Gas liquid original foss Eqn plunger rise velocity plunger lift cycle valve Load Factor plunger FOSS...

... the cycle step-by-step. Abstract The rising portion of plunger cycle makes use of some type of designed sealing mechanisms on the plunger. These sealing techniques reduce the amount of gas that bypasses (leakage) the surfacing plungers. When falling, many plungers have mechanisms designed to allow...

... ABSTRACT Gas lift equipment problems such as inconsistent valve performance, leaking valves, and bent/broken latches occasionally occur. To quantify the effects of jarring on valve opening pressure, leakage, and latch deflection, simulated field testing was performed on 1 in. pressure operated...