PSI - Issue 18

A. Kostina et al. / Procedia Structural Integrity 18 (2019) 301–308 Author name / Structural Integrity Procedia 00 (2019) 000–000

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other. However, when the volumetric increase in strain due to the evolution of defects is significant the distinction is more pronounced (almost two times greater). Therefore, the accurate prediction of the oil production rate requires consideration of geomechanics effects related to the increase in volumetric strain induced by the damage accumulation (in case of low confining stresses and moderate porosity) or the decrease of it due to pore compaction (in case of the high-porous media or high confining stresses).

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(b)

Fig. 2. Evolution of the porosity after 300 days of the steam injection (a) thermo-elastic model; (b) thermo-inelastic model.

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(b)

Fig. 3. Evolution of vertical permeability (a) thermo-elastic model; (b) thermo-inelastic model.

Fig. 4. Oil production rate. (1) – thermo-elastic model; (2) – thermo-inelastic model.