Energy condition of crack development in modeling hydraulic fracturing of an oil reservoir
UDC
539.375, 531.375DOI:
https://doi.org/10.31429/vestnik-18-4-23-28Abstract
The paper investigates the thermodynamically complete condition of brittle fracture in the simulation of hydraulic fracturing of an oil reservoir. An infinite body in a flat deformed state weakened by a narrow elliptical hole is considered as a model of an oil-bearing reservoir subjected to hydraulic action. Pressure acts on the borehole boundary. Lateral pressure due to mountain pressure acts on the remote border. A relation is obtained that determines the relationship between the characteristic size of an isolated defect (half-length of an ellipse) and the critical pressure on the well wall at which its development is possible, taking into account the lateral pressure and thermodynamic parameters of the formation (temperature and linear coefficient of thermal expansion).
Keywords:
isolated defect, plane problem of elasticity theory, integrals of released internal energy, complex potentials, conformal mappingAcknowledgement
References
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Copyright (c) 2022 Dunaev V.I., Tereshchenko I.A., Moldavanov S.Yu.
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