| 摘要 |
FIELD: oil production. SUBSTANCE: method for developing oil deposit includes injection of working agent through injection wells in cyclic mode of operation, and oil extraction through producing wells. Three groups of well are selected from all majority of the wells. The first group includes producing wells with complete flooding, in essence, of the product to be produced. The second group includes producing wells with flooding level of the product to produced close to limiting one according to economical quantities, and liquid discharge exceeding 50 cubic meters daily. The third group includes producing wells with flooding exceeding 50 % and liquid discharge below 10 cubic meters daily. The first group of the producing wells is operated until complete flooding of the product to produced. The second group of the wells is separated into zonal subgroups. Producing wells of adjacent zonal subgroups are operated in antiphase during 4 - 6 months. Periodical outage for the time of decreased water/oil relationship changes with operation until water/oil relationship is increased up to limiting flooding. Then producing wells of all zonal subgroup are stopped for 6 - 8 months. In so doing zonal subgroups of producing wells are formed under condition of equivalent liquid extraction in each zonal subgroup, and availability of producing wells of a zonal subgroup within effective area of injection wells provided with the same source of working agent. The third group of producing wells is operated in cyclic mode for 4 - 6 months. The wells outage during time less than 24 hours changes with operation less than 24 hours. Then the wells are stopped for 6 - 8 months. With wells of the second group stopped, concurrent decrease to 25 % mean value in amount of injected agent is carried out thought groups of injection wells effecting on a zonal subgroup. When operating producing wells amount of injected agent is increased to 25 % mean value. EFFECT: high productivity. |
