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首页> 外文期刊>Transport in Porous Media >Model for Gas-Condensate Phase Equilibria for Estimating C_(7+) Critical Properties Using Genetic Algorithm
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Model for Gas-Condensate Phase Equilibria for Estimating C_(7+) Critical Properties Using Genetic Algorithm

机译:遗传算法估算C_(7+)临界特性的凝析气相平衡模型

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A reliable prediction of the phase behavior is necessary in determining the compositions of the gas and liquid phases at various pressures. These calculations require stepwise computational procedure using a cubic equation of state (EOS). Since the heavy components in the petroleum mixtures have the strongest effect on the characteristics of the fluids, critical properties must be estimated for the petroleum fractions making up heptanes-plus. A phase equilibria calculation of a gas-condensate system with Peng-Robinson equation of state was done by satisfying the condition of chemical equilibrium. A genetic algorithm was used to determine the optimum critical properties of heptanes-plus (C_(7+)) fraction. The predictions of the model are compared with the experimental results of the constant volume depletion (CVD) test.
机译:在确定各种压力下气相和液相的组成时,必须可靠地预测相的行为。这些计算需要使用三次状态方程(EOS)的逐步计算程序。由于石油混合物中的重组分对流体特性的影响最大,因此必须估算组成庚烷+的石油馏分的关键性能。通过满足化学平衡条件,用Peng-Robinson状态方程对凝析气系统的相平衡进行了计算。使用遗传算法确定庚烷加(C_(7+))馏分的最佳临界性质。将模型的预测与恒定体积消耗(CVD)试验的实验结果进行比较。

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