Research on borehole stability of shale based on seepage-stress-damage coupling model

• Published in: Frattura ed integritá strutturale Vol. 8; no. 27
• Main Authors: Xiaofeng Ran, Yuezhi Wang, Shanpo Jia
• Format: Journal Article
• Language: English
• Published: Gruppo Italiano Frattura 01.12.2013
• Subjects: Borehole stability

In oil drilling, one of the most complicated problems is borehole stability of shale. Based on the theory of continuum damage mechanics, a modified Mohr-Coulomb failure criterion according to plastic damage evolution and the seepage-stress coupling is established. Meanwhile, the damage evolution equ...