| Issue |
E3S Web of Conf.
Volume 230, 2021
IV International Scientific and Technical Conference “Gas Hydrate Technologies: Global Trends, Challenges and Horizons” (GHT 2020)
|
|
|---|---|---|
| Article Number | 01015 | |
| Number of page(s) | 10 | |
| DOI | https://doi.org/10.1051/e3sconf/202123001015 | |
| Published online | 18 January 2021 | |
Investigation of the dissipative structures following microseismic diffusion during hydraulic fracturing of methane-hydrate-bearing sand
1 Institute for Physics of Mining Processes, Ground Control Department, 14 Sympheropolska St, 49005, Dnipro, Ukraine
2 Higher Educational Institution “Donetsk National Technical University”, Department of Mineral Development, 2 Shybankova Ave., 85300, Pokrovsk, Ukraine
* Corresponding author: olga.pidgurnaya@gmail.com
Hydraulic fracturing is a prospective technology for methane hydrate deposit exploitation. The evolution of hydraulically stimulated fractures around the point of liquid injection is simulated. For this purpose, the FLAC3D computer model is used because of its explicit calculation cycle that imitates real physics, prevents numerical instability, and reproduces a realistic path during simulation of the nonlinear rock massif behavior. The results of the simulation provide for new findings, namely, the spatial asymmetry and synchronism violation, spatial deviation, discontinuity, and recurrence during microseismic diffusion, which follow the process of hydraulic fracturing. In addition, dissipative structures were developed due to entropy production, since gas hydrate strata are an open thermodynamic system, which transforms and dissipates the energy of the injected liquid. The process of dissipative structure evolution should be controlled to enhance the gas yield from the hydrates.
© The Authors, published by EDP Sciences, 2021
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