OIL DEPOSIT DEVELOPMENT METHOD Russian patent published in 2020 - IPC E21B43/20 E21B43/22 

FIELD: oil, gas and coke-chemical industries.

SUBSTANCE: invention relates to oil industry and can be used in development of oil deposits. In order to implement the deposit development method and to increase oil recovery, permeability of the water conducting channels of the formation is controlled through injection wells by simultaneous massive injection of swirls of flow deviating reagents. Geological and production analysis of the deposit and analysis of its development are carried out. Lithofacial zones of the deposit, extent of coverage of lithofacial zones by a system of technogenic cracks for injection wells of each zone are identified. Method includes determining type, volume and rheological properties of reagents. Type and volume of flow-deflecting composition are selected based on geological and geophysical characteristics and degree of coverage with technogenic cracks. According to the results of mass processing of lithofacial areas, the reaction of the producing stock is evaluated by reduction of water content of the product due to impact. Dominant geological and technological factors influencing the reaction of the producing stock are determined with the help of geological and hydrodynamic modelling. Along lithofacial zones there performed is downhole correction of types of flow deflecting compositions, their volumes and injection modes and repeatedly performing mass one-time injection.

EFFECT: technical result is improved efficiency of displacement and coefficient of oil extraction, reduced watering of produced product.

1 cl, 2 tbl, 2 dwg