Abstract
The physical-and-mathematical model is presented for generation of microseismic events during hydrofracture propagation. Defects (discontinuities) are described using the ESC-model. The formulas are given for the jumps of discontinuities, characteristics of seismic and aseismic events, as well as the seismic moment and seismic magnitude. The algorithm is developed to model microseismic events during hydrofracture propagation by the known geometry and physical properties of the medium as the input data. The calculations are performed for the pseudo-3D and planar models of hydrofracture propagation. It is shown that a majority of events take place at the front of the growing hydrofracture, which agrees with the observations.
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Funding
This study was supported by the Ministry of Science and Higher Education in the framework of Federal Target Program on R&D in priority areas for the development of the science and technology sector of Russia for 2014–2020, Measure 1.2, Agreement no. 14.575.21.0146 dated 09.26.2017, Unique Identifier PNI: RFMEFI57517X0146.
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Russian Text © The Author(s), 2019, published in Fiziko-Tekhnicheskie Problemy Razrabotki Poleznykh Iskopaemykh, 2019, No. 5, pp. 63–78.
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Shvarev, N.G., Markov, N.S. The Method to Model Microseismic Events during Hydrofracture Propagation. J Min Sci 55, 751–764 (2019). https://doi.org/10.1134/S1062739119056124
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DOI: https://doi.org/10.1134/S1062739119056124
Keywords
- Seismic
- microseismic activity
- microseismic events
- hydraulic fracturing
- ESC-model