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Special Topics & Reviews in Porous Media: An International Journal
ESCI SJR: 0.259 SNIP: 0.466 CiteScore™: 0.83

ISSN Imprimer: 2151-4798
ISSN En ligne: 2151-562X

Special Topics & Reviews in Porous Media: An International Journal

DOI: 10.1615/SpecialTopicsRevPorousMedia.2017020340
pages 27-36

WATER QUALITY OPTIMIZATION FOR EFFECTIVE WATER INJECTION INTO LOW PERMEABILITY RESERVOIRS

Shengchun Xiong
Petro China Research Institute of Petroleum Exploration and Development, Langfang, Hebei 065007, China
Shasha Chu
Petro China Research Institute of Petroleum Exploration and Development, Langfang, Hebei 065007, China
Ying He
Petro China Research Institute of Petroleum Exploration and Development, Langfang, Hebei 065007, China
Wei Lin
Petro China Research Institute of Petroleum Exploration and Development, Langfang, Hebei 065007, China
Yapu Zhang
Petro China Research Institute of Petroleum Exploration and Development, Langfang, Hebei 065007, China
Xiangyang Wang
Petro China Research Institute of Petroleum Exploration and Development, Langfang, Hebei 065007, China
Guozhong Liu
Institute of Porous Flow and Fluid Mechanics, Chinese Academy of Sciences, Langfang, 065007, China; Langfang Branch of Research Institute of Petroleum Exploration and Development, Langfang, 065007, China

RÉSUMÉ

In low permeability reservoirs, water injection is the main means to supplement formation energy, and water quality is a key factor influencing the effect of waterflooding. However, the water quality is defined corresponding to large ranges of permeability under the current standard, which restricts the effective implementation of fine water injection into low permeability reservoirs. In this paper, throat distribution and contribution of mainstream throat to the permeability of low permeability reservoirs were analyzed, and the range of throats that influences water injection effect in such reservoirs was illustrated. Laboratory waterflooding physical simulation experiments on cores were conducted to quantitatively analyze the impacts of clay particle migration and hydration expansion on the seepage ability, and depending on the characteristics of throat distribution, quantify the damages to reservoirs caused by particle size and concentration of suspended solids in injected water. The particle size and concentration limits of suspended solids in injected water were proposed for low permeability reservoirs.


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