The hydraulic fracturing (HF) process involves a high-pressure fluid injection that creates cracks in the deep-rock formations to stimulate the production of natural and unconventional gases or petroleum. This work investigated a self-organization process during hydro-fracturing deployment. The FLAC3D model was used to simulate the dynamics of a coupled mechanic and hydraulic process interaction. We used the constitutive model of Hubbert and Willis to simulate a process of hydraulically induced fracturing. Dissipative structures were detected on the spatio-temporal distribution of simulated injection-induced seismicity. Despite the geometrical and physical symmetry of the model, the fractured volume developed asymmetrically. The temporary absence of the axial symmetry in the plane normal to gravity reached up to 8% that is much more than the error of calculation. New findings have been compared with independent results of computer simulation, and monitoring of microseismic activity in situ during HF deployment. The agreement between the computer model predictions and the other results is satisfactory.

水力压裂 (HF) 过程涉及高压流体注入，在深岩层中产生裂缝，以刺激天然和非常规气体或石油的生产。这项工作研究了水力压裂部署过程中的自组织过程。FLAC3D 模型用于模拟耦合机械和液压过程相互作用的动力学。我们使用 Hubbert 和 Willis 的本构模型来模拟水力压裂过程。在模拟注入诱发地震活动的时空分布上检测到耗散结构。尽管模型具有几何和物理对称性，但裂缝体积不对称地发展。在垂直于重力的平面内暂时不存在轴对称性高达 8%，这远远超过计算误差。新发现已与计算机模拟的独立结果进行了比较，并在 HF 部署期间现场监测微震活动。计算机模型预测与其他结果之间的一致性是令人满意的。