This study used the Discrete Element Method (DEM) to model sand production in weakly consolidated sandstone reservoirs. Triaxial tests were conducted on a simulated sandstone sample to calibrate the DEM model. Parametric studies then investigated the effects of confining stress and fluid flow pressure on bond failure. Results showed bond breakage increased exponentially with confining stress and fluid pressure. Flow rate versus permeability validated Darcy's fluid flow law. The DEM model reliably reproduced sandstone behavior and can predict sand production, aiding management of unconsolidated reservoirs.