Abstract Successful hydraulic fracturing (HF) operation requires an accurate model for simulating the propagation of fractures. In this paper, a novel mechanism for the formation of T-shaped fractures and a three-dimensional propagation simulation for predicting their dimensional parameters prior to HF treatment are presented. Furthermore, a pressure decline analysis model (PDA) is also developed for calculating the dimensional parameters after HF treatment. Experimental results show that the two models can accurately simulate the T-shaped fractures and provide a valid data for the optimization and evaluation of HF treatments.

中文翻译：

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T 形裂缝的力学机制，包括压力下降和裂缝扩展的模拟 3D 模型

摘要 成功的水力压裂 (HF) 操作需要一个精确的模型来模拟裂缝的扩展。在本文中，提出了一种新的 T 形裂缝形成机制和一个三维扩展模拟，用于在 HF 处理之前预测其尺寸参数。此外，还开发了压力下降分析模型（PDA），用于计算 HF 处理后的尺寸参数。实验结果表明，两种模型均能准确模拟T型裂缝，为HF处理优化评价提供有效数据。