The influence of deviatoric and horizontal differential stress and pore pressure on hydraulic fracture opening by fully coupled 3D cohesive elements method

Saberhosseini, Seyed Erfan; Keshavarzi, Reza

doi:10.1007/s12517-018-4222-y

Cited by 4 publications

(2 citation statements)

References 19 publications

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“…Therefore, Cohesive zone model(CZM) has been widely applied in the simulation of hydraulic fracturing fracture propagation [25][26][27] . The simulation of hydraulic fracturing process of shale reservoir belongs to the coupled stress-seepage process, and two finite elements are mainly used for coupling simulation.…”

Section: Methods and Theorymentioning

confidence: 99%

Study on hydraulic fracture propagation of strong heterogeneous shale based on stress-seepage damage coupling model

Liu,

Xiao,

et al. 2024

Preprint

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The developed laminar structure of shale makes it have obvious anisotropic characteristics, and the anisotropic characteristics are one of the important factors leading to the strong and weak heterogeneous properties of shale, and there is a common phenomenon that the propagation of hydraulic fracture heights is limited in the hydraulic fracturing process of strong heterogeneous shale reservoirs. In order to clarify the reasons for the limited height propagation of hydraulic fractures in strongly heterogeneous shale reservoirs, numerical simulation methods were used to study the propagation patterns of hydraulic fractures in shale reservoirs under different anisotropy, flow rate, viscosity, and stress differences. The results show that as the anisotropy value increases and the heterogeneity becomes stronger, the more difficult it is for hydraulic fractures to expand along the fracture height direction, and the larger the fracture width is at the fracture opening. For the strong heterogeneous shale reservoir, the hydraulic fracture height can be increased within a certain range by increasing the flow rate, increasing the viscosity and increasing the stress difference. When the upper limit value is exceeded, the hydraulic fracture height of the strong heterogeneous shale reservoir gradually becomes stable, and the increasing trend is no longer obvious. The strong or weak heterogeneity caused by the inherent anisotropic characteristics of shale reservoirs will affect the development and transformation effectiveness of shale reservoirs. The research in this article will provide some reference and guidance for the efficient development of shale reservoirs.

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Section: Methods and Theorymentioning

confidence: 99%

Study on hydraulic fracture propagation of strong heterogeneous shale based on stress-seepage damage coupling model

Liu,

Xiao,

et al. 2024

Preprint

View full text Add to dashboard Cite

show abstract

“…Extra leak-off and a reduction in propped fracture length are avoided as far as possible in petroleum and coal-bed methane exploitation (Olajossy and Cieślik, 2019). For instance: Saberhosseini and Keshavarzi (2019) investigated the influences of deviatoric and horizontal differential stress on hydraulic fracture opening in vertical and horizontal oil wells, and concluded that the fracture opening has been strongly affected for both vertical and horizontal oil wells by increasing deviatoric and horizontal differential stress. Dahi Taleghani et al.…”

Section: Introductionmentioning

confidence: 99%

Numerical model on predicting hydraulic fracture propagation in low-permeability sandstone

Shi

Zhang

et al. 2020

International Journal of Damage Mechanics

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Hydraulic fracture propagation is hard to predict due to natural joints and crustal stress. This process may lead to uncontrollable changes in hydrogeological conditions. Therefore, prediction and control of fracture propagation are paramount to permeability increase in ore-bearing reservoir. The coupled fluid-solid model was utilized to predict the hydraulic fracture propagation in low-permeability sandstone of a uranium mine. For this study, the model was modified to allow fractures to propagate randomly by using the cohesive zone method. The simulation was developed on a three-step process. First, geological data required to run the model, including crustal stress, strength and permeability, were assembled. Next, fracture propagation under different conditions of stress and injection volume were simulated. In the final step, experimental data required to validate the model were obtained. The simulation results indicate that the principal stress, distribution and orientation of natural fracture have vital influence on fracture propagation and induced complex fracture network. This work provides a theoretical basis for the application of hydraulic fracture in low-permeability sandstone reservoir and ensures the possibility to predict the generation of complex fracture network.

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Effect of Borehole Radial Pore Pressure Gradient on the Initiation and Propagation of Sandstone Hydraulic Fractures

Zhao,

Huang,

et al. 2023

Transp Porous Med

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The influence of deviatoric and horizontal differential stress and pore pressure on hydraulic fracture opening by fully coupled 3D cohesive elements method

Cited by 4 publications

References 19 publications

Study on hydraulic fracture propagation of strong heterogeneous shale based on stress-seepage damage coupling model

Study on hydraulic fracture propagation of strong heterogeneous shale based on stress-seepage damage coupling model

Numerical model on predicting hydraulic fracture propagation in low-permeability sandstone

Effect of Borehole Radial Pore Pressure Gradient on the Initiation and Propagation of Sandstone Hydraulic Fractures

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