论文标题
关于流体流变对液压骨折的影响
On the influence of fluid rheology on hydraulic fracture
论文作者
论文摘要
我们分析了由非牛顿剪切稀释液驱动的液压骨折问题。流体粘度由四参数截短的幂律模型描述。通过改变流变学模型的参数，我们研究了裂纹内流体流动的空间和时间演化以及所得的断裂几何形状。提供了对潜在物理现象的详细定量和定性分析。结果表明，流体的流变特性不仅会因粘度值，而且还涉及粘度变化的流体剪切速率范围，从而显着影响液压骨折的过程。
We analyse a problem of a hydraulic fracture driven by a non-Newtonian shear-thinning fluid. Fluid viscosity is described by the four-parameter truncated power-law model. By varying the parameters of the rheological model we investigate spatial and temporal evolution of fluid flow inside the crack and the resulting fracture geometry. A detailed quantitative and qualitative analysis of the underlying physical phenomena is delivered. The results demonstrate that rheological properties of fluids significantly affect the process of hydraulic fracture not only by the values of viscosity, but also by the range of fluid shear rates over which variation of viscosity occurs.
