Based on the component analysis, a new calculation method for the volume factor of formation crude oil was proposed by cubic equation of state.

在组分分析的基础上，采用立方型状态方程建立了计算原油体积系数的新方法。

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This, from another aspect, confirms that the proposed hard-body equation of state represents repulsive pressure term of cubic equation of state for real liquids with good precision.

又从另一侧面验证了所提出的刚体状态方程确能较好地代表实际流体分子的斥力项，为开发较好的立方型方程提供了参考。

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This, from another aspect, confirms that the proposed hard-body equation of state represents repulsive pressure term of cubic equation of state for real liquids with good precision.

又从另一侧面验证了所提出的刚体状态方程确能较好地代表实际流体分子的斥力项，为开发较好的立方型方程提供了参考。

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