FIELD: wells construction technology.
SUBSTANCE: method includes widening casing column having slits and capable of widening until contact by all surface to well shaft walls. At least one additional casing column is placed, capable of widening and having no perforated apertures, within zone of first mounted casing column. Said at least one additional casing column is widened until full contact with first placed casing column. System has casing column having slits for stopping dispensing one or another liquid environment, or for exciting bed to increase oil yield. Same system has casing column capable of widening and having no perforated apertures.
EFFECT: higher efficiency.
2 cl, 4 dwg
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