OIL DEPOSIT DEVELOPMENT METHOD Russian patent published in 2013 - IPC E21B43/20 

FIELD: oil and gas industry.

SUBSTANCE: according to the method, production wells are arranged on the deposit along triangular grid; product is extracted through production wells; working fluid is pumped through injection wells so that out-contour and contour flooding is formed. Production wells are arranged along triangular grid so that rows of wells oriented at 120° to each other are formed. Buildups of increased thickness, which are associated with paleochannel, are extracted on the deposit, in dome part of which there drilled are horizontal production wells with parallel and series location of horizontal shafts at equal distance from existing vertical production wells in the existing triangular grid. Distance between parallel horizontal shafts is maintained within 220 to 280 m, and distance between faces of horizontal wells at their series location is maintained within 220 to 360 m.

EFFECT: increasing oil recovery of the deposit owing to enlarging the coverage area of the deposit.

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