| The low pumping efficiency of the system is one of the main problems existing in high gas/ liquid ratio well with sucker rod pumping, the main factor resulting in low efficiency of the system is gas.It is vital to reduce the impact of gas and improve the efficiency of artificial lift system for high gas/ liquid ratio well production.Based on literature research, in this paper the influence factors of sucker rod pumping system efficiency in high gas/liquid ratio well was analyzed, a variety of technologies suitable for high gas/liquid ratio conditions was studied. By evaluating of calculation methods of multi-phase flow under the condition of high gas/liquid ratio, the results show that Kaya method is optimum. Revised the calculation results of Kaya method. A calculation model of the system efficiency was established. Then, a computer program was compiled to determine a reasonable submergence pressure of the pump with the goal of highest system efficiency by dynamic simulation. Separation mechanism of different types of gas anchor was analyzed. Established a gas/oil separation model in anchor, Compiled a computer program of optimal design of gas anchor to guide the selection and design of the spiral gas anchor. By analyzing of the flow aid lifting technique with casing gas, gave the design method of the gas lift valve. With numerical simulation, got the lifting pipe flow field distribution. Derived a evaluation method of the technology. A computer program was compiled to comprehensively evaluate the high-efficiency lift technologies in high gas/liquid ratio well with VB programming language. Used an actual example comprehensive evaluation of various technologies, got optimal combination of efficient lifting techniques.
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