Simulation on wellbore integrity at casing shoe during fracturing for shale gas wells Xueli Guo, Yongjin Yu, Hongfei Ji, Jiyun Shen, Jun LI and Bing Li ITM Web Conf., 45 (2022) 01046 Published online: 19 May 2022 DOI: 10.1051/itmconf/20224501046