标准岩心尺寸人工缝网模具的研制

Development of the Artificial Fracture Network Tool for Standard Core Size

对比分析Warren-Root、HFN、DFN等离散缝网模型,运用三维绘图软件UGNX设计开发标准岩心尺寸人工缝网模具,制备了裂缝不同交叉角度人工缝网岩心,实验研究了交叉角度对缝网导流能力影响.结果表明:人工缝网模具所制备的缝网岩心有效解决现有缝网导流室存在的问题,对测试设备适应性强,易制备;提出了一种科学可行的缝网导流能力计算方法;裂缝交叉角度对缝网导流能力几乎没有影响,可用不同宽度且正交的垂直平面裂缝模拟更加复杂缝网.该研究结果为室内研究缝网导流能力提供一种新方法.

There are a number of problems for the fracture network cell during the test process.These problems include that there exist no stress on the secondary fracture,no flow in the secondary fracture,and flow through cracks between rock and fracture network cell's in wall.This work uses the UGNX soft to design a new artificial fracture network core tool via comparative analysis of Warren-Root,HFN and DFN models,makes some cores samples,and studies the impact of crossing angle on the fracture conductivity.It shows that the cores prepared by the tool can solve the problems of the fracture network cell,have strong adaptability and prepared easily.It proposes a scientific and practical calculation method for fracture network conductivity,and a new simulation mode that uses different width orthogonal vertical fracture to simulate more complex fracture network.This conclusion can provide a new way to study the fracture network conductivity in lab.