FIELD: development of, mainly, gas-condensate and oil gas-condensate deposits, particularly gathering the initial information required for evaluation of efficiency of cycling process in the deposit. SUBSTANCE: invention consists in natural pressure passing of gas between wells exposing the objects of development with different formation pressures. Prior to supply of gas to injection well, dropping fluid is separated from it in the high-pressure separator. Separated gas is injected into formation allows modelling of all main processes involved in cycling process: dynamics of formation pressure, repression on the formation, water-oil-condensate saturation of reservoir, and required measurements of parameters of gas injection:pressure and temperature in well and in formation, and compositions of injected and produced gases and fluid. EFFECT: higher efficiency. 1 dwg
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