Influence of Rock Permeability on Detached Particle Size Distribution Under Filtration and Cyclic Loading Conditions
摘要
This research examined the influence of cyclic loading on the permeability and granulometric composition of mobilized particles during nitrogen filtration through sandstone samples with varying initial permeabilities. A correlation was established between cyclic loading, particle characteristics, and permeability variations during filtration. A specific test protocol was used for each sample, taking into account the evolution of permeability as a function of the number of load cycles and the direction of filtration. Paper filters were placed under the exit surface of the samples to collect mobilized particles during filtration. The filtration studies revealed dependencies between permeability and the number of mobilized particles as a function of the loading cycles. A higher number of loading cycles resulted in a greater standard deviation and average size in the particle size distribution. The particle size distribution curves for samples with high initial permeability exhibited a flatter profile and a larger standard deviation compared to those with low initial permeability. Rocks with low initial permeability displayed less particle mobilization and a minimal impact on permeability.