METHOD OF OIL POOL DEVELOPMENT Russian patent published in 2000 - IPC

FIELD: oil-producing industry, particularly, development of oil deposits by injection into formation of displacement agents. SUBSTANCE: method includes withdrawal of oil from producing wells and injection of water-gas mixture through injection wells. Water-gas mixture is used in the form of underground natural water-gas mixtures of producing horizon and/or of underlying horizons relating to single hydrodynamic basic. Withdrawal of underground natural water-gas mixture and its injection into formation are carried out by system of strong-sealing interwell pumping over. Content of hydrocarbon gases in underground water-gas mixture amounts up to 60-80%, including content of ethane and other hydrocarbons in amount of 7-20%. EFFECT: devised technology of oil pool development with use of reagent natural underground available at oil field equipment in the form of water-gas mixture with definite parameters. 2 tbl