In order to improve the sand control effect in thermal production wells, based on the linear
elasticity thermal-solid coupling theory, considering the factors which include screen elasticity modulus and the yield strength‘s
change, that caused by temperature change and base pipe's strength caused by holes, we developed the
sand control thermal stress stimulation finite element program by using the FEPG system, with which the
sand control screen stability under different working condition is simulated.
The simulation result indicates that temperature has much influence on the screen elasticity modulus and the yield strength,
and with the increasing of temperature and sand density the sand control string equivalent stress is increasing.
At the same time, model of thermal compensator is constructed by using dynamic offsetting border
and the sand screen string stability is apparently increasing with the installment of thermal compensator.