Modelling experiments has been conducted an oil displacement with water with their viscosities correlation being very close to that under formation conditions. It is shown, that initially under low pressure difference displacement occurs in high permeability zones, and after water reaches zone of drainage where pressure difference increases - in low permeability zones, thus, D5 formation goes to water in the most permeable zones. Calculations have been conducted for displacement process in two-layered formation considering obtained relative permeability Values for oil and water, utilizing SUTRA softwear, showing agreeable similarity between calculated and experimental results.