On numerical modeling of dynamics of irreversible deforming and fracture of oil-bearing layer

A paper dealing with numerical simulation in two-dimensional plane deformed state of dynamics for oil-gas saturated medium near borehole under sudden removal pressure on internal wall of the borehole. The layer is represented by the model of damageable thermoelastoplastic material with two parameters of damaging. The criterion of the beginning of new free surfaces within the material uses the principle of the critical value of specific dissipated energy. For explicitly construction of coasts of macroscopic infraction of material continuity we apply algorithm of decomposition Lagrangian mesh.