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Rock Mechanics and Rock Engineering

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23.02.2023 | Original Paper

Hydromechanical Modeling of High-Voltage Electropulse-Assisted Fluid Injection for Rock Fracturing

verfasst von: Peihao Ouyang, Pingping Rao, Jian Wu, Jifei Cui, Sanjay Nimbalkar, Qingsheng Chen

Erschienen in: Rock Mechanics and Rock Engineering | Ausgabe 6/2023

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Abstract

This paper presents a computational analysis of the evolution of mechanical characteristics in natural rock formations under the combined action of high-voltage electro-pulse and fluid injection. To solve the combined problem, a numerical solution based on a hydromechanical model is proposed. A system of anisotropic damage model is applied to capture tensile and shear damage. Innovative numerical simulations reveal that high-voltage electro-pulse can significantly enhance the effectiveness of rock-breaking in fluid injection. The simulation consists of two primary phases. First, high-voltage electro-pulse causes pre-damage and radial fissures in the rock formation, which creates a more favorable environment for subsequent fluid injection. The fluid flux is then conducted in the pre-damaged hole to fracture the rock formation further. The unique numerical method may have consequences for optimizing the rock-breaking strategy in geoengineering applications, such as the development of geothermal systems and the exploitation of oil/gas resources.

Nächster Artikel A New Multi-Cluster Fracturing Simulation Model Coupled with Perforation Erosion: Based on the Continuous–Discontinuous Method

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Titel: Hydromechanical Modeling of High-Voltage Electropulse-Assisted Fluid Injection for Rock Fracturing
verfasst von: Peihao Ouyang
Pingping Rao
Jian Wu
Jifei Cui
Sanjay Nimbalkar
Qingsheng Chen
Publikationsdatum: 23.02.2023
Verlag: Springer Vienna
Erschienen in: Rock Mechanics and Rock Engineering / Ausgabe 6/2023
Print ISSN: 0723-2632
Elektronische ISSN: 1434-453X
DOI: https://doi.org/10.1007/s00603-023-03257-8

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