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Transcripción del resumen original del autor: The present work discusses the problem on mathematical modeling of process of treatment of the near-bottom hole area with gases of different composition for deep gas condensate deposits conditions. The analytical calculating methods for a phase state of fluids at the above conditions are characterized by high errors. Thus, special experimental tests were performed to determine such thermodynamic properties of a system as viscosity, density, saturation, etc. at various compositions versus pressure. They allowed to study the whole given process using a binary model of gas condensate mixture filtration. In this situation filtration of the gas condensate mixture is considered as a joint flow of intersoluble fluids, basing on the concept of movement of a bicomponent two-phase hydrocarbon system with interphase transitions of the mixture components. The results obtained are: 1. An approximated engineering approach and algorithm to calculate the process of condensate recovery from the near-bottom hole area using dry hydrocarbon gas and gases of various composition for deep seated gas condensate deposits have been developed. 2. The process to enhance gas condensate well recovery output in deep Bulla-Deniz field in Azerbaijan has been studied using the treatment of its near-bottom hole area with dry gas and gases having nitrogen or carbon dioxide, and its high effectiveness for the completing stage of development has been stated.