METHOD FOR DEVELOPMENT OF OIL DEPOSIT BY FLOODING

摘要

FIELD: oil production industry. SUBSTANCE: this can be used for increasing oil recovery from beds by regulation of permeability of water-flowing passages. According to method, injected are alkali solution of sludge-lignin and water solution of surface-active substance in following proportions: sludge-lignin - alkali solution - surface active substance: from 1:1:0.5 to 1:1:5. Delivery of water solution of surface-active substance is carried out simultaneously with or after injection of alkali solution of sludge-lignin. Application of aforesaid method leads to increased degree of displacing oil from low-permeable zones of bed. EFFECT: higher efficiency. 2 tbl, 2 ex