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DOI	10.1029/2020GL087563
	Gravity Hydraulic Fracturing: A Method to Create Self-Driven Fractures
	Salimzadeh S.; Zimmerman R.W.; Khalili N.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:20
英文摘要	In this study, we investigate the possibility of using a high-density fluid to induce downward fracture growth in a hydraulic fracturing process. We propose a mathematical model to calculate the minimum amount of a dense fluid required to trigger downward fracture propagation under gravity forces, and we verify the calculated minimum volume of the fluid through numerical simulations. Results show that when the injected fluid exceeds the minimum amount, a steady downward growth of the hydraulic fracture is obtained. The fracture propagation consists of two distinct responses: The first response can occur under either toughness-dominated, viscosity-dominated, or an intermediate hydraulic fracturing regime, depending on fluid rheology, rock properties, and injection scenario. The second response occurs mainly under the toughness-dominated regime, meaning the predominant energy dissipation mechanism is to overcome the fracture toughness and break the rock. In the latter, the speed of the downward fracture growth depends on the viscosity and fluid weight. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Energy dissipation; Gravitation; Hydraulic fracturing; Viscosity; Energy dissipation mechanism; Fracture growth; Fracture propagation; Gravity forces; Hydraulic fracturing process; Injected fluids; Minimum volumes; Rock properties; Fracture toughness; energy dissipation; fracture propagation; fracture toughness; gravity field; hydraulic fracturing; numerical model; viscosity
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169608
作者单位	Commonwealth Scientific and Industrial Research Organisation, Melbourne, VIC, Australia; Department of Earth Sciences and Engineering, Imperial College, London, United Kingdom; School of Civil and Environmental Engineering, The University of New South Wales, Sydney, NSW, Australia
推荐引用方式 GB/T 7714	Salimzadeh S.,Zimmerman R.W.,Khalili N.. Gravity Hydraulic Fracturing: A Method to Create Self-Driven Fractures[J],2020,47(20).
APA	Salimzadeh S.,Zimmerman R.W.,&Khalili N..(2020).Gravity Hydraulic Fracturing: A Method to Create Self-Driven Fractures.Geophysical Research Letters,47(20).
MLA	Salimzadeh S.,et al."Gravity Hydraulic Fracturing: A Method to Create Self-Driven Fractures".Geophysical Research Letters 47.20(2020).