... velocity and leakage increases the predication of casing build up pressure, all other variable being constant. The additive term from Appendix A is shown below and terms are defined in Appendix A . (Eqn.A14) P c , max = P c , min C P R − 14.7 ( T R , a v g...

... 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 increased leakage...

... 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...