This study presented the pressure behaviour of a well located in multilayered bounded square and crossed by a vertical fracture (uniform flux or infinite conductivity). It was found that pressure function and its derivative and fractional flow from different layers are mainly controlled by the fracture extension into the formation. The effects of transmissibility and storativity on fractural flow and pressure derivatives are significant. Such effect on pressure functions are insignificant. Therefore, type curves of pressure functions can not be used in evaluation reservoir characteristics while those of pressure derivative can be used for this purpose. The nature of the fracture was found to have minor effects on different parameters included in this study. It was found that type curves of buildup pressure function can be used only for very small values of fracture extension and production time.

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