Features of Hydraulic Fracturing Propagation near Free Surface in Isotropic Poroelastic Medium

Azarov, A. V.; Kurlenya, M. V.; Serdyukov, S. V.; Patutin, A. V.

doi:10.1134/s1062739119015216

Cited by 10 publications

(4 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…and this procedure continues while c σ , E will not become zero, which means complete failure of material and crack formation. A more detailed description of this fracture process is given in [13]. The equations described above, which determine the behavior of a material that contains a crack, were solved numerically using an extended finite element method XFEM (eXtended Finite Element Method) [16][17][18][19].…”

Section: Governing Equation Of the Modelmentioning

confidence: 99%

“…Such conditions can arise, for example, when HF is performed near mine workings. Some problems of the development of hydraulic fractures near cavities/voids were considered in [8][9][10][11][12][13][14]. In [8], a model of hydraulic fracturing in the roof of a mine working, which had a rectangular shape, was proposed.…”

Section: Introductionmentioning

confidence: 99%

“…In [9][10][11][12], the behavior of HF crack in the vicinity of circular cavities in a 2d elastic medium was investigated. In [13], the problem of modeling HF near a free surface in an elastic and poroelastic model of a medium was considered, where it was shown that the trajectories of cracks in these two cases are different. In [14], the influence of the poroelastic parameters of the medium on HF in the vicinity of a circular cavity was investigated.…”

Section: Introductionmentioning

confidence: 99%

See 2 more Smart Citations

Modeling of hydraulic fracture in a medium containing a hollow inclusion

Azarov

Serdyukov

Patutin

2022

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

In this work, the problem of the development of a hydraulic fracture crack near a circular cavity in a three-dimensional homogeneous elastic medium is considered. The results of numerical calculations performed using the extended finite element method (XFEM) implemented in the ABAQUS software package are presented. Various variants of the position of the initial disk crack relative to the cavity are considered. Some regularities of the development of a three-dimensional hydraulic fracture near the cavity have been found.

show abstract

Section: Governing Equation Of the Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Modeling of hydraulic fracture in a medium containing a hollow inclusion

Azarov

Serdyukov

Patutin

2022

IOP Conf. Ser.: Earth Environ. Sci.

View full text Add to dashboard Cite

show abstract

“…It was shown that the lengths and openings of cracks in a poroelastic medium, as well as the fracturing pressure, can differ significantly from the values obtained in the elastic model [39]. It was indicated that the trajectories of cracks near the free surface in elastic and poroelastic media differ from each other [40]. A fully coupled fluid flow and geomechanics model for the growth of hydraulic fractures in the near-wellbore region was validated against the experimental results presented in [41].…”

mentioning

confidence: 96%

Hydraulic Fracture Propagation Near the Cavity in a Poroelastic Media

2021

View full text Add to dashboard Cite

In this paper, we investigate the problem of the propagation of hydraulic fractures in a poroelastic medium that has a circular cavity. The research was conducted using the extended finite element method (XFEM) implemented in the ABAQUS software package. The problem was considered in a plane formulation. The initial crack was oriented parallel to the surface of the cavity. It was shown that the path of the hydraulic fracture depends strongly on the hydrostatic stress in the medium and the distance between the crack and the cavity. We studied the influences of the poroelastic parameters, such as permeability and the Biot coefficient, on the propagation of cracks. It was shown that the cracks were less curved when the coupled problem of poroelasticity was considered. The features of fluid pressure changes inside the fracture and at the opening of the mouth were studied. It was shown that the fluid pressure in the fracture during injection was minimally sensitive to the state of the stress in the medium, to the position of the initial crack, and to the poroelastic parameters. The solution to the problem in this setting can be used to simulate hydraulic fracturing close to mine workings during a controlled roof’s collapse to prevent it from hanging, and the formation of impervious screens to reduce airflow from the mine to degassing boreholes through the rock, for example.

show abstract