During hydraulic fracturing treatment, each wellbore section or interval does not receive equal treatment fluid because of non-uniformity in in-situ stresses. The application of chemical particulates for fluid diversion plays an important role in achieving a uniform distribution of treatment fluid in single or multistage hydraulic fracturing treatment. The diversion works on bridging and sealing mechanisms. The large particles are responsible to initiate a bridge and small particles help to seal the voids between large particles. This sealing mechanism is responsible for creating an impermeable diverter plug that can resist higher differential pressure across the diverter plug. The pressure withstanding capacity of diverter pack is the most important parameter to be evaluated in order to compare the performance of various diverter blends.

The present novel method will help to design and evaluate the effectiveness of near-wellbore diversion stage during hydraulic fracturing treatment. The method utilizes a new empirical model to estimate pressure drop during fluid flow across binary diverter blend. This model is developed by correlating two dimensionless groups, Ergun friction factor, and Modified Ergun Reynolds number. It is able to predict the pressure drop within ±10 % of the experimentally measured values. It will also help to optimize the diverter blends having different particle sizes, and proportions. The diverter blend composed of 60 % of 7 mesh particles and 40 % of 60 mesh particles is recommended for near-wellbore diversion application because it exhibited the highest pressure drop amongst the several diverter blends. When this model is incorporated in the hydraulic fracturing treatment design simulator, it will be able to update the perforation pressure drop for designing a diverter stage. This will help to estimate the increase in treating pressure necessary for the unstimulated zone. Thus, the effectiveness of fluid diversion can be analyzed.

在水力压裂处理过程中，由于地应力的不均匀性，每个井眼段或井段不会接收到相同的处理液。在单级或多级水力压裂处理中，化学微粒在流体导流中的应用对于实现处理液的均匀分布具有重要作用。分流作用于桥接和密封机制。大颗粒负责引发桥接，小颗粒有助于密封大颗粒之间的空隙。这种密封机制负责形成不可渗透的分流塞，该分流塞可以抵抗分流塞两端的更高压差。为了比较各种分流器混合物的性能，分流器组件的耐压能力是最重要的要评估的参数。

目前的新方法将有助于设计和评估水力压裂处理过程中近井导流阶段的有效性。该方法利用新的经验模型来估计流体流过二元分流器混合物期间的压降。该模型是通过关联两个无量纲组、Ergun 摩擦系数和修正的 Ergun 雷诺数而开发的。它能够在实验测量值的 ±10% 范围内预测压降。它还有助于优化具有不同粒径和比例的分流器混合物。由 60% 的 7 目颗粒和 40% 的 60 目颗粒组成的分流器混合物被推荐用于近井分流应用，因为它在几种分流器混合物中表现出最高的压降。当该模型被纳入水力压裂处理设计模拟器时，它将能够更新射孔压降以设计分流器级。这将有助于估计未受刺激区域所需的治疗压力的增加。因此，可以分析流体分流的有效性。