METHODS FOR RECOVERING OIL FROM WATER-FLOODED HYDROCARBON DEPOSITS BY INJECTION OF CELLULOSE

摘要

FIELD: oil production industry. SUBSTANCE: invention relates to improved method of water-flooding and to equipment for more efficient oil recovery operations. According to method mixture of cellulose powder with water is injected through injection well. Initial amount of powder proportion to be added to water is increased as function of adjustable pressure of mixture in well in bed surrounding and of adjustable flow rate of injectable mixture. Flow rate of water and value of proportioned flow are optimized and mixture is under control to ensure settling down inside bed for higher recovery of hydrocarbons. Mixing tank is designed so as to prevent preliminary settling-down of mixture. Injection of water-powder mixture into bed is performed by mobile equipment which makes operation more versatile. Total cost of recovery operations is reduced. Recovery of hydrocarbons is increased especially from somewhat depleted deposits. EFFECT: higher efficiency. 21 cl, 8 dwg