A three-phase XFEM model for hydraulic fracturing with cohesive crack propagation

Salimzadeh, Saeed; Khalili, Nasser

doi:10.1016/j.compgeo.2015.05.001

Cited by 118 publications

(55 citation statements)

References 40 publications

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“…When modelling fracture growth, previous studies (Olson and Taleghani 2009;Bunger et al 2012;Wu and Olson 2015;Peirce and Bunger 2015) mostly assume that the fluid leakoff is negligible. The effect of the leakoff on the hydraulic fracturing of a single fracture has been shown in many studies (Carrier and Granet, 2012;Salimzadeh and Khalili, 2015;Salimzadeh et al, 2016). In the present study, the poroelastic effect of the leakoff on the interactions between multiple hydraulic fractures is shown.…”

Section: Simulation Results and Analysismentioning

confidence: 64%

“…To numerically model the hydro-mechanical evolution of fluid-driven fracturing with leakoff, it is essential to couple the fluid flow in the matrix with the mechanical deformation of the rock and the fluid flow inside the fracture (Carrier and Granet 2012;Salimzadeh and Khalili, 2015). Salimzadeh et al (2016) define separate flow models for rock matrix and fractures to capture the hydraulic loadings on the fractures surfaces, as well as the poroelastic deformations of rock matrix on the mesh-independent, finite elementbased framework.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Poroelasticity on Hydraulic Fracture Interactions

et al. 2017

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This study investigates, by performing finite element-based simulations, the influence of fluid leak-off and poroelasticity on growth of multiple hydraulic fractures that initiate from a single horizontal well. In this research, poroelastic deformation of the matrix is coupled with fluid flow in the fractures, and fluid flow in the rock matrix, in three dimensions. Effects of the fluid leakoff and poroelasticity on the propagation of the neighboring fractures are studied by varying the matrix permeability, and the Biot coefficient. Simulation results show that the stress induced by the opening of the fractures, and the stress induced by the fluid leak-off, each have the effect of locally altering the magnitudes and orientations of the principal stresses, hence altering the propagation direction of the fractures. The stress induced by the opening of the fractures tends to propagate both of the fractures away from each other in a curved trajectory, whereas the effects of fluid leak-off and poroelasticity (i.e., a higher Biot coefficient) tend to straighten the curved trajectory.

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Section: Simulation Results and Analysismentioning

confidence: 64%

Section: Introductionmentioning

confidence: 99%

Effect of Poroelasticity on Hydraulic Fracture Interactions

et al. 2017

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“…In 2D, using an extension of XFEM accounting for poroelasticity, a cohesive zone approach within an XFEM formulation appears to properly reproduce the known solutions for a planestrain propagating hydraulic fracture (Faivre et al, 2016). See also Mohammadnejad and Khoei (2013a,b); Salimzadeh and Khalili (2015) for the fully or partially saturated case but with fewer benchmarks, and Mohammadnejad and Andrade (2016) for the case of fracture closure and re-opening. Extensions to account for frictional joints/fractures have also been proposed by Khoei et al (2015).…”

Section: Extended / Generalized Finite Element Formulationsmentioning

confidence: 99%

Numerical methods for hydraulic fracture propagation: A review of recent trends

Lecampion

Bunger

Zhang

2018

Journal of Natural Gas Science and Engineering

337

172

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“…Fractures that are more permeable than their host rock can act as preferential (or at least additional) pathways for fluid to flow through the rock, which is relevant in several areas of earth science and engineering, e.g. radioactive waste disposal in crystalline rock, exploitation of fractured hydrocarbon and geothermal reservoirs, or hydraulic fracturing (Bonnet et al 2001;Neuman 2005;Salimzadeh and Khalili 2015;Tsang et al 2015). In describing or predicting flow through fractured rock, the effective permeability of the rock, comprising rock matrix and a network of fractures, is a crucial parameter and may depend on several geometric properties of the fractures/networks, such as size, aperture, orientation, and fracture density.…”

Section: Introductionmentioning

confidence: 99%

Inclusion-Based Effective Medium Models for the Permeability of a 3D Fractured Rock Mass

et al. 2016

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Effective permeability is an essential parameter for describing fluid flow through fractured rock masses. This study investigates the ability of classical inclusion-based effective medium models (following the work of Saevik et al. in Transp Porous Media 100(1):115-142, 2013. doi:10.1007/s11242-013-0208-0) to predict this permeability, which depends on several geometric properties of the fractures/networks. This is achieved by comparison of various effective medium models, such as the symmetric and asymmetric self-consistent schemes, the differential scheme, and Maxwell's method, with the results of explicit numerical simulations of mono-and poly-disperse isotropic fracture networks embedded in a permeable rock matrix. Comparisons are also made with the Hashin-Shtrikman bounds, Snow's model, and Mourzenko's heuristic model (Mourzenko et al. in Phys Rev E 84:036-307, 2011. doi:10.1103). This problem is characterised by two small parameters, the aspect ratio of the spheroidal fractures, α, and the ratio between matrix and fracture permeability, κ. Two different regimes can be identified, corresponding to α/κ < 1 and α/κ > 1. The lower the value of α/κ, the more significant is flow through the matrix. Due to differing flow patterns, the dependence of effective permeability on fracture density differs in the two regimes. When α/κ 1, a distinct percolation threshold is observed, whereas for α/κ 1, the matrix is sufficiently transmissive that such a transition is not observed. The self-consistent effective medium methods show good accuracy for both mono-and polydisperse isotropic fracture networks. Mourzenko's equation is very accurate, particularly for monodisperse networks. Finally, it is shown that Snow's model essentially coincides with the Hashin-Shtrikman upper bound.

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A three-phase XFEM model for hydraulic fracturing with cohesive crack propagation

Cited by 118 publications

References 40 publications

Effect of Poroelasticity on Hydraulic Fracture Interactions

Effect of Poroelasticity on Hydraulic Fracture Interactions

Numerical methods for hydraulic fracture propagation: A review of recent trends

Inclusion-Based Effective Medium Models for the Permeability of a 3D Fractured Rock Mass

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