METHOD FOR RESTRICTION OF WATER INFLOW IN OPERATION WELLS

摘要

Method for restriction of water inflow to operation wells includes preparation and injecting to bed of insulation composition. Insulation composition includes following components, mass %: paraffin – 20-70; surface-active substance with concentration 0.2-0.3 % - 5-7; water – the rest, at that insulation composition is injected to well in amount enough for insulation of all the thickness of water saturated bed till achieving pressure lower that pressure of pressing operation string. One terminates injecting of composition with keeping it in bed during time needed for paraffin melting, and that one presses composition to bed with volume of liquid enough for formation of pressure in well that is equal to 75-95 % of maximal permitted pressure.