METHOD FOR INCREASING OUTPUT OF OIL RESERVOIR Russian patent published in 1997 - IPC

FIELD: oil production industry. SUBSTANCE: this relates to hydrodynamic methods of increasing oil reservoir output and can be used in deposits with intensive flooding. Method implies injection of water through injection wells and production of fluid through producing wells with determining parameters of reservoir by analyzing curve of pressure dropping in injection well. Sets of pressure dropping curves are plotted according to number of producing wells by closing one of them in every case. Determined is reservoir depth displaced by injected water in direction of each producing well according to expression: h = tgα₁•H/tgα₂,, where H - depth of oil-containing reservoir, m; α₁ and α₂ - incline angles of rectilinear sections of pressure dropping curve, at/s. Reduced is extraction of fluids from each producing well by multiple times corresponding to expression: 1 + (H - h)(R - R₃)/h(R - R₁), where R - distance between producing and injection wells, m; R₁; R₃ - radii of rectilinear sections of pressure dropping curves, m. EFFECT: high efficiency. 2 dwg