1. A method for calibrating fracture networks, comprising: estimating an average fracture width of a fracture network using one or more of net fracturing pressure, Poisson's ratio, shear modulus, and fracture height; determining microseismic event envelope and base intensity data using a three-dimensional geomodel comprising microseismic event data; determining hydraulic fracturing treatment (HFT) fracture intensity of post-hydraulic fracturing treatment (post-HFT) based on the average fracture width and HFT volume data; calibrating the base intensity data to the HFT fracture intensity to obtain calibrated HFT fracture intensity; determining a proppant transportation and distribution scenario; and generating a dual porosity reservoir model based on the calibrated HFT fracture intensity and the proppant transportation and distribution scenario.