石油工程
水驱
机制(生物学)
磁导率
洪水(心理学)
地质学
化学
物理
心理学
膜
生物化学
量子力学
心理治疗师
作者
Yifei Zhang,Zhonghua Sun,Chunlei Yu,Qiang Sun,Bei Jiang
出处
期刊:Springer series in geomechanics and geoengineering
日期:2024-01-01
卷期号:: 1468-1478
标识
DOI:10.1007/978-981-97-0264-0_128
摘要
In order to reveal the injection mechanism of fracturing-flooding and deepen the understanding of the initiation and propagation of cracks during fracturing-flooding, the formation breakdown pressure, the characteristics of fracture distribution and propagation under different conditions were studied based on physical simulation device for fracturing-flooding, tri-axial stress fluid-structure coupling experimental device, micro-CT and scanning electron microscopy. The experiment results show that the formation breakdown pressure and crack morphology are affected by injected fluid viscosity and injection displacement. The lower injection speed and viscosity of the injected fluid, the more favorable to form the complex fracture network. The morphology of fracture network is determined by the principal fracture and the micro-cracks. The micro-crack is attached to the principal fracture, the principal fracture controls the direction of fracture development, and the micro-fracture determines the spatial distribution of the fracture network. After fracturing-flooding, the permeability of core increases by 10–100 times, and the permeability change area accounts for more than 30% of the plat model.
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