The range of influence of the poroelastic effects in terms of dimensionless complexes for the radial hydraulic fracturing model

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The range of influence of the poroelastic effects in terms of dimensionless complexes for the radial hydraulic fracturing model. / Baykin, A. N.

In: International Journal of Rock Mechanics and Mining Sciences, Vol. 128, 104240, 04.2020.

Research output: Contribution to journal › Article › peer-review

BibTeX

@article{3fd5f9a3656045ccb828ae68690d884e,

title = "The range of influence of the poroelastic effects in terms of dimensionless complexes for the radial hydraulic fracturing model",

abstract = "In our previous work the fully coupled model of the planar hydraulic fracture propagation in a poroelastic medium was developed. In present paper we simplify this model to the case of axisymmetric fracture propagation in order to find the conditions whereby the poroelastic effects are essential. We consider two dimensionless complexes responsible for the transition from 1D to 3D filtration and for the poroelastic influence on the fracture geometry. Analyzing a large set of case studies, we find the critical values for these parameters below which the aforementioned physical effects are not important. Particularly, we demonstrate that 1D pressure diffusion is preserved until the diffusion length scale is 2.4 times smaller than the fracture size. In turn, the diffusion scale plays a central role in the poroelastic stress influence on the fracture propagation. Also, we show that in case of low closure stress the pressure diffusion is dominated not by the filtration process but by the rock deformation with a slight impact on the fracture geometry. We believe that this study will become useful for the appropriate model selection in engineering practice.",

keywords = "Diffusion scale, Dimensionless complexes, Finite element method, Hydraulic fracture, Pore pressure influence, Poroelasticity, PRESSURE, IMPACT, PROPAGATION",

author = "Baykin, {A. N.}",

year = "2020",

month = apr,

doi = "10.1016/j.ijrmms.2020.104240",

language = "English",

volume = "128",

journal = "International Journal of Rock Mechanics and Minings Sciences",

issn = "1365-1609",

publisher = "Elsevier",

}

RIS

TY - JOUR

T1 - The range of influence of the poroelastic effects in terms of dimensionless complexes for the radial hydraulic fracturing model

AU - Baykin, A. N.

PY - 2020/4

Y1 - 2020/4

N2 - In our previous work the fully coupled model of the planar hydraulic fracture propagation in a poroelastic medium was developed. In present paper we simplify this model to the case of axisymmetric fracture propagation in order to find the conditions whereby the poroelastic effects are essential. We consider two dimensionless complexes responsible for the transition from 1D to 3D filtration and for the poroelastic influence on the fracture geometry. Analyzing a large set of case studies, we find the critical values for these parameters below which the aforementioned physical effects are not important. Particularly, we demonstrate that 1D pressure diffusion is preserved until the diffusion length scale is 2.4 times smaller than the fracture size. In turn, the diffusion scale plays a central role in the poroelastic stress influence on the fracture propagation. Also, we show that in case of low closure stress the pressure diffusion is dominated not by the filtration process but by the rock deformation with a slight impact on the fracture geometry. We believe that this study will become useful for the appropriate model selection in engineering practice.

AB - In our previous work the fully coupled model of the planar hydraulic fracture propagation in a poroelastic medium was developed. In present paper we simplify this model to the case of axisymmetric fracture propagation in order to find the conditions whereby the poroelastic effects are essential. We consider two dimensionless complexes responsible for the transition from 1D to 3D filtration and for the poroelastic influence on the fracture geometry. Analyzing a large set of case studies, we find the critical values for these parameters below which the aforementioned physical effects are not important. Particularly, we demonstrate that 1D pressure diffusion is preserved until the diffusion length scale is 2.4 times smaller than the fracture size. In turn, the diffusion scale plays a central role in the poroelastic stress influence on the fracture propagation. Also, we show that in case of low closure stress the pressure diffusion is dominated not by the filtration process but by the rock deformation with a slight impact on the fracture geometry. We believe that this study will become useful for the appropriate model selection in engineering practice.

KW - Diffusion scale

KW - Dimensionless complexes

KW - Finite element method

KW - Hydraulic fracture

KW - Pore pressure influence

KW - Poroelasticity

KW - PRESSURE

KW - IMPACT

KW - PROPAGATION

UR - http://www.scopus.com/inward/record.url?scp=85079687793&partnerID=8YFLogxK

U2 - 10.1016/j.ijrmms.2020.104240

DO - 10.1016/j.ijrmms.2020.104240

M3 - Article

AN - SCOPUS:85079687793

VL - 128

JO - International Journal of Rock Mechanics and Minings Sciences

JF - International Journal of Rock Mechanics and Minings Sciences

SN - 1365-1609

M1 - 104240

ER -

ID: 23593500