Casing damage during water injection pressure relief is difficult to resolve in oil field. The fluid pressure of inner casing wall undergoes a sudden decrease because of injecting water release. At the same time, the effective stress of soil around the well-bore increases quickly, and the extrusion pressure of casing bearing also increases. In order to study the mechanism of the problem, a fluid-solid coupled model was set up. According to comparison of the fundamental equation and boundary conditions, the ANSYS function of temperature field analysis is similar to that of seepage flow field. T...
