INFLUENCE OF THE DIFFERENTIAL STRESS AND THE ORGANIC PATCHES ON THE CRACK PROPAGATION IN SHALES BY A DEMFV SIMULATION
DOI:
https://doi.org/10.26512/ripe.v2i8.21751Keywords:
Shale fracturing. Discrete element method. Finite volume method.Abstract
The coupling between chemical reactions and deformation in rocks can induce permanent damage and cracking that facilitate the circulation of fluids at large scale. This coupling process has been observed in various geological systems as weathering and erosion of rocks on the surface, hydration of the lower crust, sediment dehydration in subduction zones, serpentinization of oceanic crust or sediment rock. Among the sedimentary rocks, shale has gained prominence due to growing unconventional exploitation of gas and oil. In this geological material, the coupling between organic matter maturation and the creation of micro-crack connectivity is one of the mechanisms proposed to explain the primary migration of hydrocarbons. The aim of this work is to study the influence of the differential stress and the density of organic patches on the crack propagation in shales. To this end, the hydromechanical version of the open source Discrete Element Method (DEM) code YADE is used to simulate the organic material dilatancy-induced cracking. It is presented some numerical simulations of crack propagation and an analysis of the influence studied.
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References
Abousleiman, Y.N. 1991. A Poroelastic PKN Model with Pressure Dependent Leakoff and Formation Permeability Determination, PhD dissertation, University of Delaware.
Amann-Hildenbrand, A., Ghanizadeh, A., Krooss, B. M., 2012. Transport properties of unconventional gas systems, Marine and Petroleum Geology, vol. 31, pp. 90-99.
Ben-Zion, Y., 2008. Collective Behavior of Earthquakes and Faults: Continuum-Discrete Transitions, Evolutionary Changes and Corresponding Dynamic Regimes. Rev. Geophysics, 46, RG4006, doi:10.1029/2008RG000260.
Ben-Zion, Y., K. Dahmen, V. Lyakhovsky, D. Ertas & A. Agnon, 1999. Self-Driven Mode Switching of Earthquake Activity on a Fault System. Earth Planet. Sci. Lett., vol. 172, pp. 11- 21.
Bos, B., Spiers, C.J., 2002. Fluid-assisted healing processes in gouge-bearing faults: insights from experiments on a rock analogue system. Pure and Applied Geophysics, vol 159, pp 2537-2566.
Catalano, E., Chareyre, B., Cortis, A., Barthelemy, E., 2011. A pore-scale hydro-mechanical coupled model for geomaterials. II International Conference on Particles-based Methods ”“Fundamentals and Applications.
Chareyre, B., Cortis, A., Catalano, E., Barthelemy, 2011. E. Pore-scale Modeling of Viscous Flow and Induced Forces in Dense Sphere Packings. (submitted) (2011)
Cundall PA, Strack ODL, 1979. A discrete numerical model for granular assemblies. Geotechnique, vol 29, pp 47”“65.
Emanuele Catalano, Bruno Chareyre, Eric Barthélémy, 2014. Pore-scale modeling of fluidparticles interaction and emerging poromechanical effects. Int. J. for Numerical and Analytical Methods in Geomechanics, vol 38, n. 1, p. 51-71
Kozicki, J & Donze, F.-V., 2008. A new open-source software developed for numerical simulations using discrete modeling methods. Comp. Meth. Appl. Mech. Eng., vol 197, pp. 4429”“43.
Kozicki, J & Donze, F.-V., 2009. YADE-OPEN DEM. An open-source software using a discrete element method to simulate granular material. Eng. Comput., vol 26, n 7, pp 786”“ 805.
Islam, Ms. A., Skalle, P., 2013. An Experimental Investigation of Shale Mechanical Properties Through Drained and Undrained Test Mechanisms, Rock Mech Rock Eng vol. 46, pp. 1391”“1413.
Scholtés, L., Donze, F.-V., 2012. A DEM model for soft and hard rocks: Role of grain interlocking on strength. J. Mech. Phys. Solids.
Scholtés, L. a, Donze, F.-V., 2012. Modelling progressive failure in fractured rock masses using a 3D discrete element method, International Journal of Rock Mechanics & Mining Sciences, vol 52, pp 18”“30.
Sone, H., Zoback, M. D., 2013. Mechanical properties of shale-gas reservoir rocks ”“ Part 1: Static and dynamic elastic properties and anisotropy, Geophysics, vol. 78, pp. D381-D392.
Teixeira, M. G., Donzé, F., Renard, F., panahi, H., Papachristos, E., Scholtè, L., Microfracturing during primary migration in shales, Tectonophysics, submeted in July 2016.
Zhang, J., Scherer, G. W., 2012. Permeability of shale by the beam-bending method, International Journal of Rock Mechanics & Mining Sciences, vol. 53, pp. 179”“191.
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