Based on the stress distribution in the zone near the well

and by the consideration of the artificial fracture induced stress

we found out the stress field around the wellbore of the fractured wells. According to the Drucker-Prage criteria

we obtained the formation stability coefficients under the different conditions. The calculation results showed that the main factors of the formation sanding are induced stress caused by the high production pressure difference instead of the gas drag. More fractures

larger induced stress and more unstable formation made the sanding easier. Meanwhile

the formation stability coefficient decreased with the increase of the permeability

and the speed of the growth overall dropped down. However

the porosity had little impact on the formation stability coefficient. As the length of the fracture increased

the stability coefficient increased as well

on the contrary

the risk of the sanding decreased. By considering the impacts of the induced stress on the stability coefficient in the process of the production

we studied the influencing factors of the sanding comprehensively

to provide the theoretical references for the sanding control design.