Analysis of fracture nucleation around wellbores

Crack nucleation has been the subject of important contributions in two last decades. Starting from double criterion Leguillon (Eur J Mech A 21:61–72, 2002), present paper suggests that an energy is sufficient for prediction loading level triggers as well its geometrical characteristics. In view application to saturated porous materials, role pore fluid during considered. case low compressibility, presence delays brittle failure usually associated with nucleation, long pressure remains above saturation vapour pressure. The then applied discuss formation breakouts around wellbores subjected remote compressive stresses.