层状介质条件下水压裂缝缝内流场的理论研究

The Theoretical Study of Fluid Field Inner Hydraulic Fracture in the Layer Media Formation

在水力压裂过程中,缝内流体的流动特征对裂缝的延伸和形态具有很大的影响。层状介质中水压裂缝的传播形状是不规则的,其三维流场可按多孔的平行平板间的层流流动进行模拟。根据水压裂缝缝内流体的流动特点,完成了三维流场的实际流动向二维流态转换的理论研究,得出了一些有益的结论。

It is well known the there is a great effect on the fracture promulgation and shapes by property of fracture fluid in the hydraulic fracture during the hydraulic operations. The three dimensions fluid flow can be reduced to be simulated in the manner of laminar flow due to the irregularity promulgation of fracture in the layer media formation, as well as the three dimensions flow can be conversion into two dimensions flow to be studied, according to the fluid propriety inner the hydraulic fracture. The useful results have been gained from the studied of the fluid field in the fracture.