METHOD FOR RECOVERY OF RESIDUAL OIL FROM FLOODED NON-UNIFORM BED

摘要

FIELD: oil production industry. SUBSTANCE: according to method, injected into bed through injection well is micellar solution containing water-soluble surface-active material and oil-soluble surface-active material, hydrocarbon liquid and water. Additionally, prior to injection into bed or in process of injecting micellar solution into bed, undertaken is isolation of highly permeable zones of bed by means of injecting fine-dispersive solid particles. Application of aforesaid method yields larger oil recovery from beds and reduced flooding of recovered product. EFFECT: higher efficiency. 2 tbl