This paper presents a study of the applicability of the water Huff and Puff technology in tight oil reservoirs using a dual porosity hydrodynamic model. This technology uses capillary imbibition to extract oil from the tight pores of a hydrophilic reservoir. To simulate this process, a synthetic hydrodynamic model was created in tNavigator software with model of dual porosity and permeability. Small pores were analogous to the matrix and large pores were analogous to cracks. Since spontaneous capillary imbibition for the dual media model is not provided in this package, a script was created to convert the additional pressure gradient between media caused by capillary pressure into a change in matrix permeability. The simulation results show an increase in oil production after the operation. Pilot works were carried out at 4 wells. Two of them were indicative. In one well there was an increase in oil production. Comparison of the oil production dynamics before and after water Huff and Puff with the results of hydrodynamic modeling shows good convergence even with a synthetic model without adaptation to a specific well.