Mechanical entrapment analysis of enhanced preformed particle gels (PPGs) in mature reservoirs

The rising temperature and velocity cause the amount of entrapped PPGs to decrease, while gel particle-pore size ratio shows a relatively more complex behavior due to the viscoelastic nature of this product. It obeys quadratic behavior and the amount of entrapped PPGs is decreased gradually by increasing gel particle-pore size ratio and then increased dramatically. Finally, it is shown that the amount of entrapped PPGs can be predicted by using an accurate mathematical correlation. The results of this study can be used to guide the selection of best PPG size for successful water shut off under a particular reservoir condition.