METHOD OF DEVELOPMENT OF OIL DEPOSIT Russian patent published in 2010 - IPC E21B43/22 

FIELD: oil and gas industry.

SUBSTANCE: invention refers to oil producing industry, particularly to methods of development of oil deposit of not uniform formations and can be used for stimulation of oil yield of formations and for reduction of watering of production wells at late stage of deposit operation. The method of oil deposit development consists in pumping water solutions of polymer, sodium silicate and gel-forming system; in process conditioning and in pumping replacing agent; as gel forming system there is taken suspension of auto-decomposing separated slag and solution of hydrochloric acid. Also pumping is carried out separately.

EFFECT: increased efficiency of treatment of watered formations and reliability of insulation of water inflow to production wells.

2 cl, 5 ex, 1 tbl