METHOD OF DEVELOPMENT OF OIL POOL Russian patent published in 2009 - IPC E21B43/22 

FIELD: mining.

SUBSTANCE: method includes water flooding, pumping water solution of mineral reagent into well, notably, that water solution consists of finely dispersed activated by crumbling natural materials and finely dispersed particles escaping at wear of parts of crumbling facilities, or pumping water solution of mineral reagent and co-reagent. According to the invention under conditions of water-flooded non-uniform terrigenous-carbonate formations of the pool mineral reagents are used at amount of 0.0001-0.01 vol % of high penetrable part of the pool with medium size of particles more, than 0.1 of averaged diameter of pool pores and under condition of placement of mineral reagents only in high penetrable and cavernous-fractured zones, avoiding formation of additional zones of non-uniformity. Also pumping of water solutions of mineral reagent at different watering of producing wells is performed at shut-off producing wells with watering below medium. After pumping water solution of mineral reagent forcing through liquid is pumped, then process conditioning is performed during 12-72 hours.

EFFECT: increased efficiency of development of facies non-uniform oil reservoirs, improved replacement of hard extracted oil stock in non-uniform water flooded reservoirs due to carrying out processes of flocculation and filtration in these reservoirs.

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