Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
Eine Plattform für die Wissenschaft: Bauingenieurwesen, Architektur und Urbanistik
On the initiation, propagation and reorientation of simultaneously-induced multiple hydraulic fractures
Abstract This study aims to uncover the growth characteristics of simultaneously-induced multiple hydraulic fractures using the discrete element method. We evaluate the influences of in-situ states and operational parameters on the fracture trajectories. Results reveal that reservoir heterogeneity magnifies the stress-shadowing effect and causes severe interactions among fractures. Higher effective stress anisotropy offsets the stress-shadowing effect and force the fractures to propagate in the direction of maximum stress and results in relative long parallel fractures. Increasing the spacing can mitigate the stress-shadowing effect to some degree. Injection rate and fluid viscosity have a less significant influence on the interactions among fractures.
On the initiation, propagation and reorientation of simultaneously-induced multiple hydraulic fractures
Abstract This study aims to uncover the growth characteristics of simultaneously-induced multiple hydraulic fractures using the discrete element method. We evaluate the influences of in-situ states and operational parameters on the fracture trajectories. Results reveal that reservoir heterogeneity magnifies the stress-shadowing effect and causes severe interactions among fractures. Higher effective stress anisotropy offsets the stress-shadowing effect and force the fractures to propagate in the direction of maximum stress and results in relative long parallel fractures. Increasing the spacing can mitigate the stress-shadowing effect to some degree. Injection rate and fluid viscosity have a less significant influence on the interactions among fractures.
On the initiation, propagation and reorientation of simultaneously-induced multiple hydraulic fractures
Duan, Kang (Autor:in) / Kwok, Chung Yee (Autor:in) / Zhang, Qiangyong (Autor:in) / Shang, Junlong (Autor:in)
26.08.2019
Aufsatz (Zeitschrift)
Elektronische Ressource
Englisch
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