A mathematical model considering complex fractures and fractal flow for pressure transient analysis of fractured horizontal wells in unconventional reservoirs

Wang, Wendong; Su, Yuliang; Sheng, Guanglong; Cossio, Manuel; Shang, Yangyang

doi:10.1016/j.jngse.2014.12.011

Cited by 61 publications

(32 citation statements)

References 24 publications

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“…Zhang et al (2015) then presented a numerical five-region model with multi-nonlinearity to study the production of shale gas. To account for heterogeneity of complex fracture network inside the SRV, Wang et al (2015aWang et al ( , 2015b and Fan and Ettehadtavakkol (2017) introducing the fractal dimension to quantitatively describe the complex fracture density inside the SRV in Barnett shale reservoir.…”

Section: Analytical and Semi-analytical Methodsmentioning

confidence: 99%

A review of stimulated reservoir volume characterization for multiple fractured horizontal well in unconventional reservoirs

Wang¹,

Zheng²,

Sheng³

et al. 2017

Adv. Geo-Energ. Res.

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Unconventional resource exploration has boosted U.S. oil and gas production, which is successfully by horizontal well drilling and hydraulic fracturing. The horizontal well with multiple transverse fractures has proven to be effective stimulation approach could increase reservoir contact significantly. Unlike the single fracture planes in typical low permeability sands, fractures in shales tends to generate more complex, branching networks. The concept of stimulated reservoir volume (SRV) was developed to quantitative measure of multistage fracture interact with natural fractures in unconventional reservoir. However, the simple fracture modeling of the past do not suitable for the complex scenarios simulation. This paper reviews the mainstream characterization method of stimulated reservoir volume in shale reservoirs, including microseismic interpretation, rate transient analysis method, analytical and semi-analytical method and numerical method. Finally, the systematic evaluation of application conditions with respect to each method and further research directions for characterization method are proposed.

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Section: Analytical and Semi-analytical Methodsmentioning

confidence: 99%

A review of stimulated reservoir volume characterization for multiple fractured horizontal well in unconventional reservoirs

Wang¹,

Zheng²,

Sheng³

et al. 2017

Adv. Geo-Energ. Res.

Self Cite

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“…Microscale pore structure experiments show that the extension of a fracture is not irregular and can be expressed with different types of fractal theoretical models (Katz and Thompson 1985;Pande et al 1987;Wei and Xia 2017). Fractal theory has been applied to characterize the heterogeneity of hydraulically fractured porous media in tight oil reservoirs (Wang et al 2015a;Zhao et al 2016). An iteratively determined tree-like fractal bifurcation has been introduced to study complex fracture network performance (Wang et al 2015b), which is able to capture the details of multilevel bifurcated fractures in different orders and branches.…”

Section: Introductionmentioning

confidence: 99%

Performance-based fractal fracture model for complex fracture network simulation

Wang

Zhang

Xiang³

et al. 2017

Pet. Sci.

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The paper presents a novel hydraulic fracturing model for the characterization and simulation of the complex fracture network in shale gas reservoirs. We go beyond the existing method that uses planar or orthogonal conjugate fractures for representing the ''complexity'' of the network. Bifurcation of fractures is performed utilizing the Lindenmayer system based on fractal geometry to describe the fracture propagation pattern, density and network connectivity. Four controlling parameters are proposed to describe the details of complex fractures and stimulated reservoir volume (SRV). The results show that due to the multilevel feature of fractal fractures, the model could provide a simple method for contributing reservoir volume calibration. The primary-and second-stage fracture networks across the overall SRV are the main contributions to the production, while the induced fracture network just contributes another 20% in the late producing period. We also conduct simulation with respect to different refracturing cases and find that increasing the complexity of the fracture network provides better performance than only enhancing the fracture conductivity.

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“…Accordingly, it is widely employed to fit data of field measurements, while the scaling exponent θ m is treated as the fitting parameter (see, for example, Refs. [31][32][33] and references therein).…”

Section: Introductionmentioning

confidence: 99%

“…Furthermore, it is frequently supposed that the scaling exponent θ m is equal to the anomalous diffusion exponent θ [29][30][31][32][33].…”

Section: Introductionmentioning

confidence: 99%

Anomalous diffusion of fluid momentum and Darcy-like law for laminar flow in media with fractal porosity

et al. 2016

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A mathematical model considering complex fractures and fractal flow for pressure transient analysis of fractured horizontal wells in unconventional reservoirs

Cited by 61 publications

References 24 publications

A review of stimulated reservoir volume characterization for multiple fractured horizontal well in unconventional reservoirs

A review of stimulated reservoir volume characterization for multiple fractured horizontal well in unconventional reservoirs

Performance-based fractal fracture model for complex fracture network simulation

Anomalous diffusion of fluid momentum and Darcy-like law for laminar flow in media with fractal porosity

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