Peculiarities of hydraulic fracture propagation in media with heterogeneous toughness: The energy balance, elastic battery and fluid backflow

IF 5.7 1区工程技术 Q1 ENGINEERING, MULTIDISCIPLINARY

International Journal of Engineering Science Pub Date : 2025-03-10 DOI:10.1016/j.ijengsci.2025.104237

Daniel Peck , Gaspare Da Fies , Ivan Virshylo , Gennady Mishuris

引用次数: 0

Abstract

This paper investigates hydraulic fracture in a medium with periodic heterogeneous toughness. Results for the plane-strain (KGD) model are analysed. The energy distribution as the fracture propagates is examined, along with the evolution of the crack geometry. It is shown that the solid layer acts as an elastic battery, discharging to promote rapid propagation through weaker material layers. The limiting case of an infinite-length crack is discussed. The velocity of the fluid throughout the crack length is also considered. For fractures in high-toughness material it is shown that fluid backflow can occur, with its profile dependent on the toughness distribution. The implications of these findings are discussed.

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非均质韧性介质中水力裂缝扩展的特性：能量平衡、弹性电池和流体回流

本文研究了具有周期性非均质韧性介质中的水力断裂。分析了平面应变（KGD）模型的计算结果。研究了裂纹扩展时的能量分布，以及裂纹几何形状的演变。结果表明，固体层充当弹性电池，通过较弱的材料层放电促进快速传播。讨论了无限长裂纹的极限情况。流体在整个裂纹长度上的速度也被考虑在内。对于高韧性材料的断裂，流体会发生回流，其分布与韧性分布有关。讨论了这些发现的意义。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

International Journal of Engineering Science 工程技术-工程：综合

CiteScore

11.80

自引率

16.70%

发文量

审稿时长

45 days

期刊介绍： The International Journal of Engineering Science is not limited to a specific aspect of science and engineering but is instead devoted to a wide range of subfields in the engineering sciences. While it encourages a broad spectrum of contribution in the engineering sciences, its core interest lies in issues concerning material modeling and response. Articles of interdisciplinary nature are particularly welcome. The primary goal of the new editors is to maintain high quality of publications. There will be a commitment to expediting the time taken for the publication of the papers. The articles that are sent for reviews will have names of the authors deleted with a view towards enhancing the objectivity and fairness of the review process. Articles that are devoted to the purely mathematical aspects without a discussion of the physical implications of the results or the consideration of specific examples are discouraged. Articles concerning material science should not be limited merely to a description and recording of observations but should contain theoretical or quantitative discussion of the results.