Study on the Effect of Solid Particle on Water-flooding Development in
Low Permeability Sandstone Reservoir

doi:10.11885/j.issn.1674-5086.2013.05.27.01

Abstract

Abstract:

The solid particles in the injecting water directly affect injection pressure and the degree of formation damage in
low permeability sandstone reservoir. The paper studied the injection of three different sizes of solid particle，whose D90（the
cumulative particle size distribution of solid particle in the injecting water exceeds 90%）is 1.24，5.05，9.91µm. and we studied
three kinds of injectivity water for the degrees of damage on oil phase permeability，and investigate the impact on the recovery.
The results show there are problems on injectivity in core of permeability less than 1 mD when particle size，D90，is larger than
1 µm. However，when the permeability of core is larger than 1 mD，the problem goes away. As D90 increases，the degrees
of oil permeability damage increases and the water flooding recovery reduces. As the permeability grows，the solid particle of
larger particle size plugs the flowing channel in small and medium-sized pores，reducing water-flood sweeping ability. Seen
from chart of permeability damage，when the core permeability is greater than 10 mD，the particle size，D90，can be 5 µm.

Key words: solid particle, particle size, permeability, injectivity, chart of permeability damage

Wu Jiazhong1, Meng Hongli2, Xu Jie3, Xie Quan1, Shi Leiting2. Study on the Effect of Solid Particle on Water-flooding Development in
Low Permeability Sandstone Reservoir[J]. 西南石油大学学报(自然科学版), DOI: 10.11885/j.issn.1674-5086.2013.05.27.01.

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