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Item Phase Behavior Analysis of a Gas Condensate Reservoir(CUET, 7-May-2024) Mahjabin, NadiaRetrograde condensation is the term used to describe certain unusual features that result from condensate production in gas reservoirs. Unlike traditional gas reservoirs, this kind of reservoir experiences phase behaviour changes that affect the flow characteristics. This study's primary goal is to examine the nature of a specific gas condensate reservoir and create a model to track changes in fluid flow under specified circumstances. In this case, the Kailashtila gas field of Bangladesh has been taken into consideration. Both laboratory tests and simulations are performed to analyse the fluid composition, phase behaviour. Results are then summarized using simulation software (PVTSIM) to develop the phase diagram and other property curves of the fluid. The simulated and lab results implicate the reservoir to be a lean gas reservoir which is retrograde in nature. In the second part, a mathematical model is developed to represent the changes in flow pattern due to condensate banking near well-bore region.