Xian Shi1,2,*, Botao Zhang1,2, Weidong Zhang1,2, Zenghua Ma3, Bo Zhang3, Ahmad Ramezanzadeh4, Bin Li5, Jian Mao5
Energy Engineering, Vol.123, No.5, 2026, DOI:10.32604/ee.2025.073586
- 27 April 2026
Abstract To investigate the mechanism governing the continuous decline in fracture conductivity of unconsolidated sandstone reservoirs post-hydraulic fracturing, this study centers on the synergistic effects of two key mechanisms—particle migration and proppant embedment. Through the integration of laboratory experiments and computational fluid dynamics-discrete element method (CFD-DEM) coupled numerical simulations, this study systematically examines the influence patterns of varying closure pressures, particle concentrations, fluid properties, and proppant parameters on fracture conductivity. The experimental results demonstrate that particle migration induces pore blockage within the proppant packing layer. When the fines mass concentration reaches 10%, fracture conductivity is almost… More >