FIELD: oil production industry, particularly technology for oil, gas and water well construction and reinforcement.
SUBSTANCE: method involves deepening casing pipe having device for productive stratum isolation into well simultaneously with equipping bottomhole with seat, deepening string of oil-well tubing with end nipple into well; feeding predetermined quantity of hydrophobic compound in annular space around casing pipe; inserting nipple in bottomhole seat; pumping cement mortar into annular space around casing pipe; forcing cement mortar with the use of predetermined quality of liquid; isolating annular space. Hydrophobic compound density is equal to that of cement mortar. Stratum isolation is carried out with the use of check valves arranged at level of productive stratum surface.
EFFECT: increased efficiency of productive stratum isolation, reduced costs.
4 dwg, 1 ex
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