METHOD OF DEVELOPING DEPOSIT WITH FRACTURED RESERVOIRS Russian patent published in 2016 - IPC E21B43/20 E21B43/30 

FIELD: oil industry.

SUBSTANCE: invention relates to oil industry and, in particular, to development of carbonate reservoirs with fracture-cavity type hollow space within roof part of structure in presence of roof caldera. Method comprises determining deposit sections with roof caldera, characterised by distribution of radial cracks and annular impermeable crack with decreasing downward along section of their opening. Determining zones of crack propagation of different types and cavity zone at said section. Determining direction of movement of regional flow of liquid on fracturing zones. In cavity zones placing production wells with exposure of all reservoirs of caldera at section. Injection wells are located in northern part inside caldera at distance of not less than 100 m to nearest producer well at equal distance between adjacent cracks with opening and pumping of displacement agent into lower reservoir. Displacement agent is injected into injection wells. Product is extracted through production wells.

EFFECT: technical result is increased oil flow rate of production wells and final oil recovery factor due to increased recovery of oil deposits in carbonate fractured-cavity reservoirs.

1 cl, 2 dwg