Effect of fines migration on oil–water relative permeability during two-phase flow in porous media

摘要: Abstract One of the main physical characteristics defining oil recovery during water injection is phase relative permeability. Salinity formation can significantly differ from injected and consequently affect permeabilities. In current work, we investigate effect fines migration on First, flow tests with piece-wise constant decreasing salinity without are performed in order to identify movable fine particles. Then displaced by sister-cores for a assessment excluding ion exchange processes. After re-saturation, alternate salinity. The conditions large-scale approximation, where capillary pressure dispersion effects negligible, have been achieved tests. This allows derivation modified Welge–JBN method determine permeability obtained curves exhibits an abnormal decline at high saturations, which attributed mobilization straining yielding decline.