Based on most fracturing modes, fractures are often vertical and researches on the rheology of foam fluids indicate that laminar flow of power law mode and H-B mode are consistent to the flow of foam fluid. ( 2 ) Space law mode. 泡沫流体流变模式的研究表明幂律模式和H-B模式的层流流动完全能满足泡沫压裂液的实际流动.(2)土地空间权的形成基础。
Considering both vertical seepage and horizontal seepage, the moving grain with different diameter was analyzed under the conditions of laminar flow and turbulent flow, and different critical hydraulic gradients were educed according to different pipe seepage. 分别针对自下而上和水平向的渗流,分析不同粒径的可动颗粒在层流和紊流两种状态下的受力,从而得到不同状态下的管涌发生时的临界水力梯度。