FIELD: oil and gas industry.SUBSTANCE: method for limiting water influx in a well involves portion pumping to the isolation interval of composition and gel-forming regulator. Composition contains hydrolysed polyacrylonitrile - 100 parts by volume, liquid glass - 20-50 parts by volume, polyacrylamide DP9-8177 - 50-100 parts by volume. Aluminium oxychloride in the amount of 200-300 parts by volume is used as gel-forming regulator.EFFECT: improving efficiency of waterproofing work owing to increasi...

FIELD: oil and gas industry.SUBSTANCE: method consists in series pumping to a well of portions of water solution of a structure-forming reagent and a structure former, which are separated with fresh water bank. Water solution of the structure-forming reagent and the structure former is forced through to isolated interval by pumping of displacement fluid. First, water solution of hydroxochloric aluminium is pumped to the formation and left for the time period of reaction with carbonate basin. Pum...

FIELD: oil and gas production. ^ SUBSTANCE: according to procedure for control over reservoir permeability back-filling composition and chemical initiator of structuring pumped after it and corresponding to 20-35 wt % water solution of calcium chloride are pumped by several alternating portions by 2-10 m3 depending on reservoir capacity. Portions are divided with water spacer of volume excluding portions mixing during pumping. Also, sodium liquid glass mixed with water solution of bio-polymer is...