Features of productive carbonate deposits of Tatarstan Republic oil fields are noted. Brand new integrated approach on selective water influx sealing in carbonate reservoirs on the basis of available and inexpensive chemicals has been developed. Reviewed are peculiarities of operations on selective water influx sealing in producers by utilizing inverted emulsion-suspension dispersions of "water-in-oil" type with subsequent oil production stimulation by successive acid mixture and oil solvent of specific chemical composition treatments. Presented are modifications of hydrochlorid acid treatment, enabling to increase fluid production tenfold. It is stated, that proposed technologies enable to increase oil rates by 1,5 - 10 times with simultaneous sharp reduction of water cut due to water influx restriction, as well as fluid production increase and inclusion into production of previously undrained layers.