| 摘要 |
FIELD: oil and gas industry. ^ SUBSTANCE: in method for balancing of injection well water-intake capacity profile and restriction of water influx to production wells, which involves pumping to the formation of gel-forming composition containing, wt %: sodium silicate 1-10, chrome acetate 0.5-2, water is the rest, pumping of the above composition to formation, technological pause, prior to pumping of the above composition to wells there pumped is fresh water; induction period of gel-forming composition at formation temperature is set so that it is equal to 6-10 hours, and technological pause is chosen so that its duration is equal to 24-36 hours. ^ EFFECT: improving the efficiency of oil displacement from formation due to water isolation of highly water-flooded formations in production wells either due to equalising the water-intake capacity profile of injection wells by partial or complete blocking of highly washed channels or interlayers for movement of injection water. ^ 1 ex, 2 dwg |
