METHOD FOR DEVELOPMENT OF NON-HOMOGENEOUS OIL DEPOSIT Russian patent published in 2016 - IPC E21B43/22 

FIELD: oil industry.

SUBSTANCE: invention relates to oil industry and can be used in developing oil deposit with inhomogeneous permeability beds. Method for development of inhomogeneous oil deposit, which involves separation of deposit into zones with high, medium and low permeability, pumping through injection wells of displacement agents with different viscosity in different zones and recovery of formation products through production wells, in zone with low permeability to 100 mD displacement agent is pumped with viscosity equal to viscosity of formation water cyclically with periodicity of 15 days, in zone with average permeability of header from 100 to 500 mD displacement agent is pumped with viscosity higher than viscosity of displacement agent pumped into zone with low permeability at 40 % cyclically with periodicity of 12 days, in zone with high permeability reservoir more than 500 mD displacement agent is pumped with viscosity higher than viscosity of displacement agent pumped into zone with medium permeability at 50 % cyclically with periodicity of 9 days.

EFFECT: high uniformity of production areas.

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