METHOD OF FORMATION COVERAGE EVALUATION BY DEVELOPMENT SYSTEM Russian patent published in 2020 - IPC E21B49/00 E21B43/16 

FIELD: oil and gas industry.

SUBSTANCE: invention relates to oil industry and can be used in design and control of development of oil deposits. Porosity, viscosity of displacement agent and displaced fluid, effective oil-saturated thickness of the formation opened by the well, initial formation pressure on all objects of tectonic structure development are determined according to the method of geophysical investigations in wells and laboratory investigations. By results of hydrodynamic researches permeability, radii of well drainage, time of pressure restoration in the well to reservoir, area of coverage of formation with drainage radius S1 and total area of deposit inside water-oil contact S2. S1/S2 ratio is used to estimate deposit coverage by development system.

EFFECT: technical result is higher accuracy of prediction of well drainage areas and formation coverage area by development, simplification of method.

1 cl, 4 dwg, 1 tbl, 1 ex