This work was supported by the National Natural Science Foundation of China(Grant Nos.U1663205,51704191 and 51804194);the Shanghai Leading Academic Discipline Project(Grant No.S30106);the Shanghai Municipal Education Commission(Peak Discipline Construction Program);the Shanghai Sailing Program(Grant No.17YF1428000)。
The situation of an off-center casing under non-uniform ground stress can occur in the process of drilling a salt-gypsum formation,and the related casing stress calculation has not yet been solved analytically. In add...