COMPOUND FOR WATER-FLOODING OF OIL RESERVOIR

摘要

FIELD: oil production. SUBSTANCE: compound contains sludge-lignin with the following amount of components, mas.%: sodium silicate 1.0-5.0; sodium hydroxide 0.35-1.75; sludge-lignin 1.0-5.0; water 88.25- 97.95. EFFECT: higher efficiency of compound due to reduced permeability and increased coverage of reservoir. 1 tbl