OIL FIELD DEVELOPMENT METHOD Russian patent published in 2023 - IPC E21B43/20 E21B43/11 

FIELD: oil production.

SUBSTANCE: method includes determining the density of perforations for the injection well, perforating the injection well, pumping a working agent through the injection well, and withdrawing oil through the production well. Preliminarily, geophysical studies of the reservoir of the development object are carried out, coefficients of open porosity Kp, oil saturation Ks and thickness hi of oil-saturated reservoir interlayers are determined Oil-saturated reservoir interlayers are combined into layers with a step of 0.05 fractions of units by coefficient of open porosity, starting from oil-saturated interlayer with a minimum coefficient of porosity Kp₁. The summed power of all oil-saturated interlayers in the layer (N_layer) is determined; then the weighted average coefficient of porosity Kp._{weighted average} and weighted average coefficient of oil saturation Ks._{weighted average} are determined for each selected layer. Next, the layer coefficient K_layer is determined for each selected layer according to the formula K_layer=Kp_{weighted average}*Ks._{weighted average}, fractions of units. Next, determine the reservoir coefficient weighted average Kres._{weighted average}. Define the perforation hole density for each selected layer for the injection well Nres._inj and for reacting producing wells Nres._prod. using the formula Nres._inj.=10*K_layer/Kres._{weighted average}, holes/m, Nres._prod=10*Kres._{weigted average}/K_layer, holes/m, where K_layer is coefficient of the selected layer, Kres._{weighted average} is weighted average reservoir coefficient. Perforate the injection and reacting production wells.

EFFECT: increased efficiency of operation of a heterogeneous reservoir of an oil field development facility by increasing the coverage of the reservoir by the impact, the uniformity of oil reserve, maintaining high extraction rates of recoverable reserves, increasing the oil displacement ratio by providing integrated regulation of the injection of a displacing agent into the influencing injection well and the selection of fluid in reacting production well by perforating an oil-saturated reservoir with a calculated channel density.

1 cl, 1 tbl