OIL DISPLACEMENT METHOD Russian patent published in 2006 - IPC E21B43/22 

FIELD: geotechnological mining operations, particularly oil production by rock permeability reduction and reservoir coverage increase.

SUBSTANCE: method involves determining oil reservoir pore dimensions D_p before displacement agent injection; injecting water and rubber crumb through injection well and producing product through production well; injecting water and car tire crumb after full oil reservoir flooding. Car tire crumb dimension D_cr is more or equal to 1.3 D_p. Water and crumb ratio is 1:0.3 - 1:0.1, wherein above ratio at the initial stage exceeds that at the final stage of oil reservoir development.

EFFECT: increased depth of reservoir treatment and reduced reagent cost along with possibility to utilize used polymeric car tires.

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