METHOD FOR PROCESSING OIL FORMATION Russian patent published in 2006 - IPC E21B43/27 

FIELD: oil industry, in particular, method for processing oil formations, possible use for increasing oil yield of facially heterogeneous formations, and also for extracting hard to extract oil reserves.

SUBSTANCE: in accordance to method for processing oil bed, oil-bitumen product, extracted from product wells of pools of highly viscous oils and bitumen by various physical and chemical methods, is forced into bed, then soaked, preliminarily water solution of mineral acid is forced into well bottom zone and soaked, after forcing aforementioned oil-bitumen product it is pushed into formation by forcing in pushing liquid, and then soaked. Chemical reagent and/or filler is injected into aforementioned oil-bitumen product, as chemical reagent, surfactant or polymer or hydrocarbon solvent or spirits is used, as filler, mineral powder or wood flour, or rubber chips, as mineral powder, argillaceous powder or Portland cement is used, while forcing in of aforementioned oil-bitumen product and pushing liquid is performed cyclically.

EFFECT: increased technological efficiency when processing watery oil formations at parts of formations with facially heterogeneous beds, containing hard to extract oil reserves.

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