Numerical investigation on the effect of depletion-induced stress reorientation on infill well hydraulic fracture propagation

Zhang, Fengshou; Huang, Litang; Yang, Lin; Dontsov, Egor; Weng, Dingwei; Liang, Hongbo; Yin, Zirui; Tang, Jizhou

doi:10.1016/j.petsci.2021.09.014

Cited by 31 publications

(12 citation statements)

References 36 publications

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“…Based on Hagemann's research, Li et al (2017) considered the influence of gas reservoir outer boundary closure and permeability heterogeneity on the change in the stress field they believed that the stress reversal area first increased rapidly in the process of oil well production and development, then began to shrink, and finally returned to the initial stress state after increasing to the limit value. Yang et al (2019) used the finite volume method to study the influence of fracture spacing on reservoir stress orientation before re-fracturing. Sangnimnuan et al (2018a, b) used a coupled model of fluid flow and geomechanics based on the embedded discrete fracture model (EDFM) to predict the stress distribution of fractured reservoirs after pressure exhaustion they believed that the corresponding refracturing method should be selected according to the changes in the stress reversal region, so that the refracturing fracture can reach the expected position.…”

Section: Introductionmentioning

confidence: 99%

Refracturing time optimization considering the effect of induced stress by pressure depletion in the shale reservoir

Wang,

Yang,

Wang

et al. 2024

Preprint

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Refracturing is an important technology for tapping remaining oil and gas areas and enhancing recovery in old oilfields. However, a complete and detailed refracturing timing optimization scheme has not yet been proposed. In this paper, based on the finite volume method and the embedded discrete fracture model, a new coupled fluid-flow/geomechanics pore-elastic-fractured reservoir model is developed. The COMSOL commercial software was used to verify the accuracy of our model, and by studying the influence of matrix permeability, initial stress difference, cluster spacing and fracture half-length on the orientation of maximum horizontal stress, a timing optimization method for refracturing is proposed. The results of this paper show that the principle of optimizing the refracturing timing is to avoid the time window where the percentage of type-I (Type I indicates that stress inversion has occurred, \({0^ \circ } \leqslant \alpha \leqslant {20^ \circ }\); Type II indicates that the turning degree is strong, \({20^ \circ }<\alpha \leqslant {70^ \circ }\); and Type III indicates less stress reorientation, \({70^ \circ }<\alpha \leqslant {90^ \circ }\).) stress reorientation area is relatively large, so that the fractures can extend perpendicular to the horizontal wellbore. At the same time, the simulation results show that with the increase of production time, the percentage of type-I and type-II increases first and then decreases, while the percentage of type III decreases first and then increases. When the reservoir permeability, stress difference and cluster spacing are larger, the two types of refracturing measures can be implemented earlier. But With the increase of fracture half-length, the timing of refracturing method I is earlier, and the timing of refracturing method II is later. The research results of this paper are of great significance to the perfection of the refracturing theory and the optimization of refracturing design.

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Section: Introductionmentioning

confidence: 99%

Refracturing time optimization considering the effect of induced stress by pressure depletion in the shale reservoir

Wang,

Yang,

Wang

et al. 2024

Preprint

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“…Previous studies largely focused on the influence factors of penetration behavior of hydraulic fracture. The influence factors can be divided into three types, the stress difference (Warpinski et al, 1982;Huang et al, 2016;Weng et al, 2018), the difference of rock properties (Huang et al, 2018;Xu et al, 2019;Huang et al, 2023), and the weak bedding planes (Tang and Wu, 2018;Xing et al, 2018;Zhang et al, 2022). Some numerical simulation and physical experiments about the penetration behavior of hydraulic fractures showed that the filtration of fracturing fluid into the bedding plane reduces the penetration ability (Ji et al, 2015;Huang et al, 2019;Gao and Ahmad, 2020;Luo et al, 2022).…”

Section: Introductionmentioning

confidence: 99%

Research on the influence of stress on the penetration behavior of hydraulic fracture: Perspective from failure type of beddings

Bai

Liao

et al. 2023

Front. Earth Sci.

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The failure types of bedding determine the penetration behavior of hydraulic fracture. A stratum model containing bedding was established based on the 3D block distinct element method to explore the penetration behavior of hydraulic fractures with different types of bedding. The mechanics of hydraulic fractures penetrating the shear- failure bedding plane and tensile-failure bedding plane were analyzed. The results showed that the shear-failure bedding plane was more difficult to expand than the tensile-failure bedding plane after the hydraulic fracture turns to bedding plane. The initial stress magnitude controls the expansion difficulty of hydraulic fractures, and the high stress magnitude attenuated penetration behavior. The vertical stress affected the shear failure by increasing the shear strength of the bedding plane. It affected the tensile failure by increasing the initiation stress of the bedding plane. The effect of horizontal stress on the penetration behavior included the influence on the initiation stress of vertical joints and the enhancement of the interference stress on the horizontal bedding plane. The conclusions can provide the guidance for hydraulic fracturing in reservoir with bedding planes.

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“…Hydraulic fracturing is an effective method and is widely used in the production of coalbed methane and shale gas. [1][2][3][4] Nowadays, hydraulic fracturing is applied to increase the permeability of coal during gas extraction. The stimulated fractures are more conducive to gas migration.…”

Section: Introductionmentioning

confidence: 99%

“…Therefore, a technical method to enhance coal permeability is needed. Hydraulic fracturing is an effective method and is widely used in the production of coalbed methane and shale gas 1–4 . Nowadays, hydraulic fracturing is applied to increase the permeability of coal during gas extraction.…”

Section: Introductionmentioning

confidence: 99%

Exploring the propagation of hydraulic fracture with nonuniform stress based on the block distinct element method

Jia

Gao

Lei

et al. 2023

Energy Science & Engineering

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The stress field is a critical factor for fracture propagation in hydraulic fracturing. Attention should be paid to fracture propagation with the nonuniform stress field. A stress field with gradient was established to investigate the influence of the nononuniform stress on fracture propagation. Based on the three‐dimensional block distinct element model the fracture propagation law with nononuniform stress was obtained. The mechanism of stress gradient and magnitude of uneven fracture propagation was revealed. Aiming at the uneven propagation, the influence of elastic modulus and construction parameters was analyzed. The results show that the influence of the elastic modulus follows the χ2 distribution equation and the influence of construction parameters can be expressed by the product of the injection rate and fluid viscosity. This conclusion is of theoretical significance for fracturing with nonuniform in situ stress.

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Numerical investigation on the effect of depletion-induced stress reorientation on infill well hydraulic fracture propagation

Cited by 31 publications

References 36 publications

Refracturing time optimization considering the effect of induced stress by pressure depletion in the shale reservoir

Refracturing time optimization considering the effect of induced stress by pressure depletion in the shale reservoir

Research on the influence of stress on the penetration behavior of hydraulic fracture: Perspective from failure type of beddings

Exploring the propagation of hydraulic fracture with nonuniform stress based on the block distinct element method

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