Table 4. Comparison Table of the Theoretical Methods.

Theoretical Calculation Methods	Advantages	Disadvantages
ECM	Easily obtained. Low application difficulty.	Different application range. Low accuracy.
EOS	Accurately simulate the miscible process. Low cost.	Large calculation. Need to be solved iteratively.
AIA	Save calculation time. Higher prediction accuracy. Better generalization performance.	Need a large amount of data. If the amount of data is small, it is prone to overfitting or underfitting.