A Productivity Prediction Model for the Gravel-packed Horizontal Well

By rigorously coupling reservoir seepage and various mass flow in wellbore, the authors first present a new model to predict the productivity of a gravel-packed horizontal well. The fourth-order Runge-Kutta method is employed to solve the model, and it can be used to calculate pressure, flow rate distribution along the wellbore, and productivity. Compared with the existing mathematical models and field data, the new model has two advantages: (a) it is more accurate than other models, and (b) it is very easy to use.