Theoretical solutions of stress distribution in casing-cement and stratum system

The theoretical solutions of a casing-cement-stratum system in the formation stress field are studied using the elasticity theory. The problem is divided into two relatively simple subproblems. The cased hole system is a cylindrical layer structure and the loading state of each layer is similar. The solutions of two plane strain basic problems can be used to obtain the analytic solutions of two subproblems through the continuity condition of displacement. The theoretical solutions for the stress distribution in casing-cement and stratum system are finally obtained by applying the superposition principle.EI06835-8423