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Guan Jia Pu Oil Field is located in the western part of Bohai Bay, China. The field was developed with high angle and<br>horizontal wells drilled from an artificial island. The development drilling had experienced severe stuck pipe problems in a<br>short period, which resulted in hole collapse, equipment being left in hole and sidetracking. This paper presents a<br>comprehensive geomechanics study with the aim of identifying the root cause of the stuck pipe problem and developing<br>mitigating measures for future drilling.