Fluid-Driven Fracture in a Poroelastic Rock

Kovalyshen, Yevhen; Detournay, Emmanuel

doi:10.5772/56460

Cited by 41 publications

(72 citation statements)

References 17 publications

(29 reference statements)

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“…Such an approach is, of course, attractive from a theoretical point of view as it does not rely on the assumptions behind Carter's leak-off. In the limit of negligible poroelastic coupling and small rock diffusivity (compared to the injection duration), the results obtained are similar to the Carter's leak-off model (Carrier and Granet, 2012;Kovalyshen and Detournay, 2013). Poroelastic effects are obviously important when the injection duration is similar to the rock diffusion time-scales.…”

Section: Poroelasticitysupporting

confidence: 72%

“…The first assumption is that the hydraulic fracture propagates much faster than the characteristic diffusion velocity. This assumption has been shown to be violated in high permeability formations (Kovalyshen, 2010). However, when valid, this assumption allows reduction to a 1D diffusion equation.…”

Section: Carter's Leak-offmentioning

confidence: 99%

“…For industrial applications related to well stimulation, the need to use a complete poroelastic model is therefore questionable. Prior to complexifying the modeling, depending on the reservoir and injection condition, the scaling laws derived in Kovalyshen and Detournay (2013); Kovalyshen (2010) should be used in order to gauge of the relevance of such a modeling. However, poroelastic effects must be addressed to model fracture closure upon the end of injection.…”

Section: Poroelasticitymentioning

confidence: 99%

See 2 more Smart Citations

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

Lecampion

Bunger

Zhang

2018

Journal of Natural Gas Science and Engineering

334

172

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Section: Poroelasticitysupporting

confidence: 72%

Section: Carter's Leak-offmentioning

confidence: 99%

Section: Poroelasticitymentioning

confidence: 99%

See 1 more Smart Citation

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

Lecampion

Bunger

Zhang

2018

Journal of Natural Gas Science and Engineering

334

172

View full text Add to dashboard Cite

“…The dilated matrix induces additional compression on the fracture. This additional compression is called the "back-stress" (Cleary 1980;Kovalyshen 2010).…”

Section: Introductionmentioning

confidence: 99%

“…These are 2D plane strain or axisymmetric models which assume some constraints in either fracture height/length. More recently, fracture propagation has been modelled by incorporating the flow of fluid inside the fracture, and/or the flow of fluid into the pore space of the formation matrix, which is called "leakoff" (Savitski and Detournay 2002;Bunger et al 2005;Kovalyshen 2010;Garagash et al 2011). These studies derive asymptotic solutions of the fracture geometry and pressure for different regimes (e.g.…”

Section: Introductionmentioning

confidence: 99%

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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Experiments versus theory for the initiation and propagation of radial hydraulic fractures in low‐permeability materials

et al. 2017

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We compare numerical predictions of the initiation and propagation of radial fluid‐driven fractures with laboratory experiments performed in different low‐permeability materials (PMMA, cement). In particular, we choose experiments where the time evolution of several quantities (fracture width, radius, and wellbore pressure) was accurately measured and for which the material and injection parameters were known precisely. Via a dimensional analysis, we discuss in detail the different physical phenomena governing the initiation and early stage of growth of radial hydraulic fractures from a notched wellbore. The scaling analysis notably clarifies the occurrence of different regimes of propagation depending on the injection rate, system compliance, material parameters, wellbore, and initial notch sizes. In particular, the comparisons presented here provide a clear evidence of the difference between the wellbore pressure at which a fracture initiates and the maximum pressure recorded during a test (also known as the breakdown pressure). The scaling analysis identifies the dimensionless numbers governing the strong fluid‐solid effects at the early stage of growth, which are responsible for the continuous increase of the wellbore pressure after the initiation of the fracture. Our analysis provides a simple way to quantify these early time effects for any given laboratory or field configuration. The good agreement between theoretical predictions and experiments also validates the current state of the art hydraulic fracture mechanics models, at least for the simple fracture geometry investigated here.

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Fluid-Driven Fracture in a Poroelastic Rock

Cited by 41 publications

References 17 publications

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

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

Effect of Poroelasticity on Hydraulic Fracture Interactions

Experiments versus theory for the initiation and propagation of radial hydraulic fractures in low‐permeability materials

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