状态方程及其应用于石油与天然气相平衡计算的有关进展

The Development Concerning Equations of State and Their Applications in Phase Equilibrium Calculation for Oil and Natural Gas

关键词:  状态方程 石油 天然气 相平衡计算 注气混相驱

Key words:  equation of state,oil and natural gas,phase equilibrium calculation, miscibledisplacement by gas injection,

摘要:

本文对状态方程的发展历史作了概要的回顾，重点评价在油气藏数值模拟中有重要的应用价值的立方型状态方程的有关研究和应用进展，并指出了在地层多相流相平衡计算中的有关难点问题，如天然气彩出过程的逆向冷凝，三次采油混相驱、烃－水体系高压液－液平衡等问题的研究方向和提高预测模型精度的方法。

Abstract:

The developmental history of equation of state is reviewed briefly,and the evaluation is stressed on the research and application development of cubic equations of state which have an important application value in the reservoir simulation.The key problem