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Numerical investigation of transport behaviors of nonspherical proppants in hydraulic fracturing using CFD-DEM
Particulate Science and Technology ( IF 2.5 ) Pub Date : 2021-05-31 , DOI: 10.1080/02726351.2021.1930301
Pengfei Tang 1 , Heng Li 2 , Junsheng Zeng 3
Affiliation  

Abstract

During hydraulic fracturing, conventional spherical proppant particles tend to settle rapidly in a low-viscosity fluid, which results in low permeability and poor supporting performance in the fractures. In this study, we introduce two types of novel nonspherical proppant particles; the transport processes of both the novel and conventional proppants in hydraulic fractures are simulated using the coupled computational fluid dynamics and discrete element method approach and multisphere modeling. We compare the differences in the transport performances of the nonspherical and spherical proppants. Sensitivity analysis of the fluid viscosity and particle density in the transport process revealed that both novel non-spherical proppants have better transport performance than the conventional spherical proppant. These results provide a strong basis for future proppant design and engineering practices.



中文翻译:

基于 CFD-DEM 的水力压裂中非球形支撑剂运移行为的数值研究

摘要

在水力压裂过程中,传统的球形支撑剂颗粒往往会在低粘度流体中快速沉降,导致裂缝渗透率低,支撑性能差。在本研究中,我们介绍了两种新型非球形支撑剂颗粒;使用耦合计算流体动力学和离散元方法以及多球建模方法模拟了水力裂缝中新型和常规支撑剂的输送过程。我们比较了非球形和球形支撑剂的传输性能差异。对输运过程中流体粘度和颗粒密度的敏感性分析表明,两种新型非球形支撑剂均具有比传统球形支撑剂更好的输运性能。

更新日期:2021-05-31
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