An integrated flow model is developed to simulate the flow into horizontal wells with screens. The model is composed of a multi-segment horizontal well model and a near-wellbore model. The multi-segment horizontal well model predicts the pressure losses in a bounded reservoir. The near-wellbore model simulates the fluid flow through the damaged/collapsed zone around the wellbore, mud-cake, wellbore/screen interface, gravel-packed annulus and screen itself.

Using the model, we investigated the effects of degree of screen damage, non-uniform damage removal, mud cake properties, and blank pipe insertion on horizontal well productivity. We examined and compared the long-term horizontal well performance in terms of rate decline and cumulative production as a function of time.

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