Until the pressure reaches a specific value of maximum liquid formation, the reservoir fluid (condensate) starts re-vaporizing with further pressure depletion. As reservoir pressure further depletes below the dew point, heavier components are condensed out from the reservoir fluid due to which liquid (condensate) forms. Gas condensate reservoirs initially contain gaseous phase when pressures remain above the dew point. This formation of vapor in two-phase mixture is termed as вЂњretrograde vaporizationвЂќ. Following this it can be understood that the formation of vapor in the same two-phase mixture is the inverse process of retrograde condensation that is to say, this occurs due to either an isothermal increase in pressure or isobaric decrease in temperature. has conducted detailed research to define the anomalous behavior of the liquid, which forms either by an isothermal decrease in pressure or by an isobaric increase in temperature, and termed this behavior as вЂњretrograde condensationвЂќ. PACS: 47.27.ek 47.55.Ca 47.56.+r 1 IntroductionДЄs it is known two-phase gas condensate mixtures include a liquid-form and a vaporized state of condensate. From this study, it is proven that the application of gas cycling on five-spot well pattern greatly enhances condensate recovery preventing financial, economic and resource loss that previously occurred. In miscible gas injection, miscibility and vaporization of condensate by injected gas is more efficient mechanism for condensate recovery. Three durations are selected: 100 days, 400 days and 900 days. The second study is conducted by varying injection duration. Starting injection times of 1 month, 4 months and 9 months after natural depletion areapplied in the first study. In this paper, starting time of gas cycling and injection period are the parameters used to influence condensate recovery of a five-spot well pattern which has an injection pressure constraint of 3000 psi and production wells are constraint at 500 psi min. This work contains sensitivity analysis on different parameters to generate an accurate investigation about the effects on performance of different injection scenarios in homogeneous gas condensate system.

In gas injection, the flooding pattern, injection timing and injection duration are key parameters to study an efficient EOR scenario in order to recover lost condensate. Thus, gas cycling is applied to alleviate such a drastic loss in resources. Recovering lost condensate most economically and optimally has always been a challenging goal. Trapped condensate often is lost due to condensate accumulation-condensate blockage courtesy of high molecular weight, heavy condensate residue.

Usually, the saturation of condensate accumulation in volumetric gas condensate reservoirs is lower than the critical condensate saturation that causes trapping of large amount of condensate in reservoir pores. When reservoir pressure drops below the dew point in two phase flow of gas and condensate, the accumulation of large condensate amount occurs in the gas condensate reservoirs. Gas condensate reservoirs usually exhibit complex flow behaviors because of propagation response of pressure drop from the wellbore into the reservoir.

Minimum miscibility pressure winprop