A laboratory study of the effect of creep and fines migration on coal permeability during single-phase flow
作者： Zhenghuai Guo , Phung Nhu Hao Vu , Furqan Hussain
DOI: 10.1016/J.COAL.2018.10.009
关键词:
摘要: Abstract Both fines migration and creep can damage coal permeability during seam gas production. This study investigates the individual coupled effect of on permeability. We perform three types flow experiments samples: (1) water with both creep, (2) negligible migration, (3) only migration. During involving radial axial strains are measured. Analytical models for used to explain decrease experiments. After stress was applied, samples after elastic deformation. Fines or alone causes reduction by about 25%, whereas their combined a 60% reduction. Additional were generated due loading causing additional pore blockage, which explains greater when present. An expansive observed, is strongly correlated Existing model could not match observed creep.
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