METHOD FOR DEVELOPMENT OF OIL POOL WITH BOTTOM WATER Russian patent published in 2000 - IPC

FIELD: oil and gas production. SUBSTANCE: when developing oil pool with bottom water, working agent is injected through injection wells, product is taken out of productive wells, and system controlling pressure between oil- and water-bearing parts of bed is created. Formation pressure is maintained at the level of values ensuring establishment of static level in wellhead zone of productive wells. For production of oil, those productive wells having elevated hypsometric formation marks are selected. Pressure fluid is emptied from holes of these wells and the latter are filled with oil of the same pool. Upper boundaries of productive formation in these wells are reuncovered in oil medium of wells to form perforated holes with depths exceeding thickness of mudded zone. Production of oil is periodical using well hole from well head level as tank for settling and accumulation of oil. EFFECT: accelerated oil production.