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传统支撑剂导流能力试验需要耗费大量时间和成本,设备复杂并且对不同流体的适用性较差,基于支撑剂的排列分析和孔隙网络模型的基本原理,本文提出用孔隙网络模型模拟人工裂缝的思想,并建立了模型.以实测支撑剂渗透率作为指导,通过调整模型参数使模型预测结果与实测数据相符;并用所建立的模型对支撑剂的渗透率进行预测,达到较好的效果.针对压裂液和稠油等非牛顿流体,利用调整好的模型研究了非牛顿流体在人工裂缝中的流动特征.本文证明了孔隙网络模型模拟人工裂缝内渗流的可行性,相对于传统支撑剂导流能力试验,本方法经济高效,并且针对不同的流体有更广泛的适用性.
The traditional proppant conductivity test requires a lot of time and cost, complex equipment and poor applicability to different fluids. Based on the proppant array analysis and the basic principle of pore network model, this paper proposes to use pore network model to simulate artificial fractures And set up a model.Using measured proppant permeability as a guide, the model prediction results are adjusted to the measured data by adjusting the parameters of the model, and the permeability of the proppant is predicted with the established model to achieve good results. Fracturing fluid and heavy oil and other non-Newtonian fluids, the flow characteristics of non-Newtonian fluid in artificial fractures are studied by the well-tuned model.This paper proves the feasibility of the pore network model to simulate seepage flow in artificial fractures. Compared with the traditional proppant- Flow test, the method is cost-effective and has broader applicability to different fluids.