During the process of water injection production, high injection pressure cut in mudstone should be prevented to reduce casing damage.
油田开采过程中，应防止高压注入水进入泥岩，以预防和减少由于泥岩进水发生蠕变导致套管损坏。
2
Fault face moves relatively after being contaminated by water, areas with complex faults distribution can easily cause abnormal highpressure thus can cause casing sheer easily.
断层面进水局部产生滑移，断层的分布交杂区易形成异常高压，导致断层附近易发生套损。
3
Only the hidden trouble existing in the testing stage has been considered in designing the casing program for the high temperature and highpressure well, can the casing safety be guaranteed.