At the same time, the phase equilibrium theory and the physical properties parameters calculation have been studied, which lays a good theoretical foundation for the use of compositional model.
同时，对油气体系相平衡理论和物性参数计算进行研究，为组分模型的运用奠定了坚实的理论基础。
A compositional model usually performs a lot of phase equilibrium calculations.
在油气藏的组分模型中，需要进行大量的相平衡计算。
A new solution method to compositional model is investigated, which is implicit to pressure and saturation of oil and gas, and explicit to mole fractions of components.
提出了一种对压力和饱和度隐式、组分摩尔分数显式的部分隐式组分模型求解方法。
A new solution method to compositional model is investigated, which is implicit to pressure and saturation of oil and gas, and explicit to mole fractions of components.
提出了一种对压力和饱和度隐式、组分摩尔分数显式的部分隐式组分模型求解方法。
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