Comparison of consecutive and alternate hydraulic fracturing in horizontal wells using XFEM-based cohesive zone method

Wang, Xiaolong; Liu, Chuang; Wang, Han; Li, He; Wu, HengAn

doi:10.1016/j.petrol.2016.02.014

Cited by 60 publications

(43 citation statements)

References 24 publications

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“…Liu et al [19] presented a fully coupled (flow and mechanics) hydraulic fracture propagation model based on the XFEM to account for the sequential and simultaneous propagation of nonplanar fractures. Wang et al [20] established a 2D fully coupled pore pressure-stress plane strain model based on the XFEM in conjunction with cohesive zone method. But Liu [19] and Wang [20] models are both established in ABAQUS finite element commercial software.…”

Section: A Extended Finite Element Methodsmentioning

confidence: 99%

“…Wang et al [20] established a 2D fully coupled pore pressure-stress plane strain model based on the XFEM in conjunction with cohesive zone method. But Liu [19] and Wang [20] models are both established in ABAQUS finite element commercial software. However, the above researches did not consider the effect of natural fractures.…”

Section: A Extended Finite Element Methodsmentioning

confidence: 99%

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A Review and Prospect of Numerical Simulation of Complex Hydraulic Fracture Propagation in Unconventional Reservoirs

Liu

Liang

et al. 2017

Proceedings of the 2017 2nd International Conference on Modelling, Simulation and Applied Mathematics (MSAM2017)

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Abstract-Due to unconventional reservoir have natural weak discontinuities such as natural fractures and bedding planes, the hydraulic fracture has complicated fracture network morphology. Therefore, the traditional fracturing design method and the numerical simulation method of fracture propagation were restricted in the unconventional reservoir. In this paper, the application of the extended finite element method(XFEM), discrete element method(DEM), and displacement discontinuity method(DDM) in the simulation of hydraulic fracturing are discussed, as well as their advantages and disadvantages. It is indicated that XFEM and DEM have strong advantage in small scale mechanism analysis, while DDM has the superiority in the simulation of actual fracturing process in homogeneous formation. Finally, we draw the conclusion that combining two or more numerical simulation methods to simulate the fracture propagation of unconventional reservoirs will be a promising direction.

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Section: A Extended Finite Element Methodsmentioning

confidence: 99%

Section: A Extended Finite Element Methodsmentioning

confidence: 99%

A Review and Prospect of Numerical Simulation of Complex Hydraulic Fracture Propagation in Unconventional Reservoirs

Liu

Liang

et al. 2017

Proceedings of the 2017 2nd International Conference on Modelling, Simulation and Applied Mathematics (MSAM2017)

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“…The complexity of the problem seriously restricts the application of classical models like KGD (Perkins and Kern 1961;Nordgren 1972) and PKN (Geertsma and De Klerk 1969;Khristianovich and Zheltov 1955) in optimizing the fracture design. Currently, the prevailing methods for simulating hydraulic fracture propagation include displacement discontinuity method (Varahanaresh and Ahmad 2015;Dharmendra and Ahmad 2016;Wu and Olson 2016;Zhou et al 2015), discrete element method (Deng et al 2014;Conny and Heinz 2015) and finite element method (Zhang et al 2010;Wang et al 2012Wang et al , 2015Mahdi and Kamy 2015;Gonzalez et al 2015;Wang et al 2016;Feng and Gray 2017a;Lee et al 1994). …”

Section: Introductionmentioning

confidence: 99%

A 3D numerical model for investigation of hydraulic fracture configuration in multilayered tight sandstone gas reservoirs

Gao

Cheng

Yan

2017

J Petrol Explor Prod Technol

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Multilayered tight sandstone gas reservoirs with low porosity and low permeability are usually developed by two kinds of hydraulic fracturing techniques, including general fracturing (simultaneously fracturing multiple target zones) and separate layer fracturing (sequentially fracturing the target zones from the bottom-up). However, fractures from different target zones are likely to communicate in the fracturing process which detrimentally causes the waste of fracturing fluid and proppants and finally affects the efficiency of fracturing treatment. Therefore, investigation related to hydraulic fracture configurations under different fracturing stimulation treatments is necessary with the objective of optimizing the fracturing design and predicting the production rate. In this paper, a 3D finite element model is established to simulate the propagation of multiple hydraulic fractures in the vertical well, and fracture configurations under different fracturing techniques and formation properties are analyzed and compared. The results indicate that, in vertical wells, stress interference between the fracture tips will accelerate the communication of adjacent vertical fractures along the height direction. And separate layer fracturing is preferable for stimulating multilayered tight sandstone gas reservoirs. Also, adjacent pay zones and barriers with high in situ stress contrast, high tensile strength contrast and low elastic modulus contrast are able to effectively prevent the communication of fractures along the height direction and lead to the increase of fracture length and width, and so does the barriers with large thickness.

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“…Zhou et al [12]combined the extended finite element and the finite volume methods to model hydraulic-driven fractures with arbitrary orientation in tight gas reservoirs. Wang [13] presented a fully coupled hydraulic fracture propagation model based on the extended finite element method, cohesive zone method and Mohr-Coulomb theory of plasticity. However, their algorithm need to introduce leak-off coefficient to describe the fluid leak-off phenomenon.…”

Section: Introductionmentioning

confidence: 99%

Numerical Simulation of Hydraulic Fracturing Based on the Extended Finite Element Method

Liang

Liu

et al. 2017

Proceedings of the 2017 2nd International Conference on Modelling, Simulation and Applied Mathematics (MSAM2017)

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Abstract-This paper proposed a numerical model to simulate the hydraulic fracture propagation based on the extended finite element method(XFEM), in which a fracture representation is explicit and independent of the mesh grid. The fully coupled formulation described various physical phenomena, including the solid skeleton deformation as well as the fluid flow in porous medium, along the fracture and through the fracture sides toward the surrounding porous medium. The interactive integral method is applied to calculate the stress intensity factor in consideration of fluid pressure on fracture faces. The maximum circumferential stress criterion is used for identifying the fracture growth condition and orientation. In comparison with the current existing XFEM models for hydraulic fracturing, this approach neither needs to introduce leak-off coefficient to describe the fluid leak-off phenomenon, nor requires to assume fracture propagation orientation. Data indicates that the model is valid through a comparison of the model numerical solutions with the semi-analytical(KGD) solution . In the end, fractures simultaneously propagate from three perforating clusters in the horizontal well is simulated at the end of this paper.Keywords-extended finite element method; hydraulic fracture propagation; the interactive integral; horizontal well

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Comparison of consecutive and alternate hydraulic fracturing in horizontal wells using XFEM-based cohesive zone method

Cited by 60 publications

References 24 publications

A Review and Prospect of Numerical Simulation of Complex Hydraulic Fracture Propagation in Unconventional Reservoirs

A Review and Prospect of Numerical Simulation of Complex Hydraulic Fracture Propagation in Unconventional Reservoirs

A 3D numerical model for investigation of hydraulic fracture configuration in multilayered tight sandstone gas reservoirs

Numerical Simulation of Hydraulic Fracturing Based on the Extended Finite Element Method

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