PROCEDURE FOR DEVELOPMENT OF DEPOSIT OF OIL IN CARBONATE COLLECTORS Russian patent published in 2017 - IPC E21B43/20 

FIELD: oil and gas industry.

SUBSTANCE: according to the method, the accumulation is drilled with wells by one of the known grids. Displacement agent is injected to injectors with pressure control and recovery of products through producers are carried out. Hydrodynamic studies are carried out in the watering producers. The graphs of the indicator curves are plotted, on these graphs the drop point of the watercut is determined as the watercut curve inflection point. The point of intersection of the pressure line of oil saturation with a gas with a watercut curve is determined. The optimum operation mode of producers at the natural depletion mode is taken in the extraction zone below the healing breakdown pressure point and above the bubble point. In the fracture system, accumulations are maintained at a lower pressure than over the rest area of the accumulation.

EFFECT: increase of oil recovery and efficiency of oil-pool development in carbonate reservoirs with low water flooding.

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