Abstarct: Oil reservoirs are one of the main sources of energy production so maintaining its continuous production is of special importance. One of the biggest problems in extracting oil from weak sand formations is a phenomenon known as sand production. Sand production not only causes instability and loss of wellbore, but also causes irreparable damages to the pipe and surface and bottom of wellbore equipment. Reservoirs that are not consolidated due to the increasing of pressure drop during the production are able to produce sand. Sand production problem in wellbore has not been considered sufficiently in the petroleum industry. The aim of this study was to evaluate the potential of sand production (solid production) from one of the oil wells located in southern part of Iran using empirical correlation and well-log studies. In addition, to achieve such purpose, Mechanical Earth Modeling (MEM) was conducted using the well logs and results were calibrated against the available core and filed data. Final calibration was made using the failure criteria for being sure that break-out observed in caliper log can appropriately be predicted using the estimated geomechanical parameters. Critical production rate was proposed at the end by empirical correlation in order to mitigate sand production induced by shear failure. In addition, effective parameters involved in the sand production process, including rock strength, formation pressure and in situ stress parameters were studies using Hudson Rock Engineering System (RES). RES is one of the best methods in assessment of the effective parameters involved in a geomechanical issues and evaluation of their relationships. In this study, RES was used to investigate the major parameters involved in the sand production process. Performing this study, interaction matrix of the parameters involved in the sand production problem was has been proposed and coded using Expert semi-quantitative coding system to calculate different interactions quantity. The results obtained indicate that effective stress has the greatest effect on sand production systems, while the drawdown pressure and fluid flow parameters are the parameters affected by the system. By controlling the most effective parameters, one can reduce the sand production potential in the wells drilled in the unconsolidated reservoirs.