| abstract |
SUMMARY OF THE INVENTION: composition (wt.%) Comprising hydrolysis of the polyacrylamide 0.15-1.0; chromium-containing substance 0.002-0.03; sodium nitrite 0.41-3.00; ammonium chloride 0.32-2.35; surfactant 0.02-1.00 and water - the rest are prepared with the aim of increasing its strength at temperatures above 60 ° C. They are pumped into the bottom-hole zone of the formation, hold for up to 48 hours, after which the well is launched, as a result, water inflow is limited. 1 tab. |