Abstract：Based on the investigation of creep behavior of salt rock，the mechanism of casing failure and well-hole unstability resulting from the creep of salt rock in the deep salt rock stratum are investigated. The suitable numerical model is proposed in order to analyze the creep pressure on the casing. The analysis of creep pressure on the casing at the Tilimu basin of Xinjiang is carried out. The research results show the consistency between the calculation results and the practical measurement in the field.
