LINING METHOD OF BOTTOM-HOLE ZONE OF PRODUCTIVE FORMATION OF GAS WELLS

摘要

FIELD: oil and gas industry.SUBSTANCE: lining method of bottom-hole zone of productive formation includes successive pumping of aqueous solution of metal salt to formation through production well, and as a plugging mixture of calcium chloride aqueous solution is used forming water-insoluble compound - voluminal sediment under formation conditions. Solutions are pumped according to stoichiometric coefficients providing the largest output of sediment. As aqueous solution of metal salt aqueous solution of sodium hydro-carbonate with concentration 10-20 wt % is used.EFFECT: increasing efficiency of lining by forming steady voluminal sediment under maximum preservation of capacitative and filtration characteristics of bottom-hole zone of productive formation, enlarging range of chemical agents during the method implementation.2 tbl