The matching parameters are porosity, relative permeability and skin factor.
Before the breakthrough of the damage zone, the sharply decreased skin factor indicates huge improvement, after the breakthrough, the skin factor decreases slowly.
The estimation for reduction of oil effective permeability and skin factor near wellbore are also presented.
This paper also gives equations for calculating pseudo skin factor due to partial penetration.
Damage radius and skin factor predicted by the model are in agreement with published results.
(1990 , 1991 have studied the effects of fracture height, they merely used a skin factor.
Finally, an apparent skin factor model is developed to study the performance of wormholing.
Accordingly, a skin factor calculation model for network-fracture acidification was developed.
Analysis shows that with the increase of inclination angle and relative well length, the skin factor will decrease, but the increase of anisotropy factor causes the skin factor to increase.
According to the new skin factor model, curves of skin factor in terms of several influencing factors, such as inclination angle, well length, formation thickness and reservoir anisotropy factor are presented.
This problem could lead to errors in the calculation of the skin factor, s, up to 300%.
