For citations:
Sagitova I.M., Sagitov D.K., Zeigman Yu.V. Estimating the effect of permeability variability of undersaturated oil reservoirs on the change in the start water-cut of well production. Oil and Gas Studies. 2020;(2):69-81. (In Russ.) https://doi.org/10.31660/0445-0108-2020-2-69-81