THERMAL SCIENCE

International Scientific Journal

A NEW THEORETICAL MODEL FOR GUIDING THE GAS EXTRACTION IN COAL MINES

ABSTRACT
Based on the fractal-percolation properties, the equivalent permeability analysis of 3-D discrete fracture network models are investigated and analyzed for the first time. The 3-D fractal dimension was calculated with the 3-D fracture density, the mean major axis of fracture and the aspect ratio of major to minor axis. The reconstructed mining-induced fracture network model was used to validate that the correlation between the predicted and actual results is very strong in a sense. The equivalent permeability results can be adopted to guide the gas extraction in coal mines.
KEYWORDS
PAPER SUBMITTED: 2017-03-10
PAPER REVISED: 2017-05-01
PAPER ACCEPTED: 2017-05-21
PUBLISHED ONLINE: 2017-12-02
DOI REFERENCE: https://doi.org/10.2298/TSCI17S1293X
CITATION EXPORT: view in browser or download as text file
THERMAL SCIENCE YEAR 2017, VOLUME 21, ISSUE Supplement 1, PAGES [S293 - S300]
REFERENCES
  1. Berkowitz, B., Analysis of Fracture Network Connectivity Using Percolation Theory, Mathematical Geology, 27 (1995), 4, pp. 467-483
  2. Warburton, P., A Stereological Interpretation of Joint Trace Data, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 17 (1980), 4, pp. 181-190
  3. Jin, W., et al., Elliptical Fracture Network Modeling with Validation in Datong Mine, China, Environmental Earth Sciences, 73 (2015), 11, pp. 7089-7101
  4. Jafari, A., Babadagli, T., Relationship between Percolation-Fractal Properties and Permeability of 2-D Fracture Networks, International Journal of Rock Mechanics and Mining Sciences, 60 (2013), 6, pp. 353-362
  5. Baghbanan, A., Jing, L., Hydraulic Properties of Fractured Rock Masses with Correlated Fracture Length and Aperture, International Journal of Rock Mechanics and Mining Sciences, 44 (2007), 5, pp. 704-719
  6. Rossen, W., et al., Connectivity and Permeability in Fracture Networks Obeying Power-Law Statistics, Proceedings, Society of Petroleum Engineers, SPE Permian Basin Oil and Gas Recovery Conference, Midland, Tex., USA, Vol. 50, 2000, pp. 2226-2232
  7. Babadagli, T., Fractal Analysis of 2-D Fracture Networks of Geothermal Reservoirs in South-Western Turkey, Journal of Volcanology and Geothermal Research, 112 (2001), 1, pp. 83-103
  8. La Pointe, P., A Method to Characterize Fracture Density and Connectivity through Fractal Geometry, International Journal of Rock Mechanics and Mining Sciences & Geomechanics Abstracts, 25 (1988), 6, pp. 421-429
  9. Berkowitz, B., Hadad, A., Fractal and Multifractal Measures of Natural and Synthetic Fracture Networks, Journal of Geophysical Research: Solid Earth, 1021 (1997), 6, pp. 12205-12218
  10. Jafari, A., Babadagli, T., Estimation of Equivalent Fracture Network Permeability Using Fractal and Statistical Network Properties, Journal of Petroleum Science and Engineering, 92 (2012), 4, pp. 110-123
  11. Mourzenko, V., et al., Macroscopic Permeability of Three-Dimensional Fracture Networks with Power- Law Size Distribution, Physical Review E, 69 (2004), 6, 066307
  12. Khamforoush, M., et al., Permeability and Percolation of Anisotropic Three-Dimensional Fracture Networks, Physical Review E, 77 (2008), 5, 056307
  13. Mandelbrot, B., B., Stochastic Models for the Earth's Relief, the Shape and the Fractal Dimension of the Coastlines, and the Number-Area Rule for Islands, Proceedings of the National Academy of Sciences of the United States, 72 (1975), 10, pp. 3825-3828
  14. Barton, C. C., Larsen, E., Fractal Geometry of Two-Dimensional Fracture Networks at Yucca Mountain, Southwestern Nevada, Office of Scientific & Technical Information Technical Reports, US Department of Energy, OSTI, Ouk Ridge, Tenn., USA, 1985
  15. Stauffer, D., Introduction to Percolation Theory, Physics Today, 46 (1993), 40, pp. 64-64
  16. Masihi M., et al., Fast Estimation of Connectivity in Fractured Reservoirs Using Percolation Theory, SPE Journal, 12 (2007), 02, pp. 167-178
  17. Balberg I., et al., Excluded Volume and Its Relation to the Onset of Percolation, Physical Review B, 30 (1984), 7, pp. 3933-3943

© 2017 Society of Thermal Engineers of Serbia. Published by the Vinča Institute of Nuclear Sciences, Belgrade, Serbia. This article is an open access article distributed under the terms and conditions of the Creative Commons Attribution-NonCommercial-NoDerivs 4.0 International licence