三轴应力状态下页岩水化破坏实验研究

Experimental Study of Shale Damage by Hydration under Triaxial Stress State

泥页岩井眼稳定不仅与其水软性有关，而且与岩石所受应力等条件有关。利用三轴应力防损实验方法揭示了泥页岩在不同流速、压力、流体条件下的水化破坏规律。

Borehole stability in shale re1ates not only toits water sensitivity, but also to the stress state of rocks,With triaxial stress hole sloughing-prevention method, theshale damage laws by hydration under different flow rate,pressure and nuid conditions are revealed.