OIL BED WORKING METHOD Russian patent published in 1995 - IPC

FIELD: oil winning industry. SUBSTANCE: method involves pumping water through pressure wells and withdrawing oil through producing wells, with delivery of water from pressure wells into bed bottom zone and in reverse direction prior to regular pumping of water being prevented; determining water heating zone in pressure wells from bottom to level, which is half the level, where temperature of rock is at least equal to water heating temperature predetermined by working requirements; filling well with water, with water temperature in pressure wells being continuously controlled; providing process holding to obtain water temperature in heating zone matching with that determined by working requirements and to provide settlement and cleaning of water; providing delivery of water from pressure wells into bed bottom zone; pumping water from heating zone into bed bottom zone, with flowing of water from pressure wells into bed bottom zone and in reverse direction being prevented; filling empty space of wells with water; repeating processes till heated water edging within the volume predetermined by working requirements is formed in bed bottom zone, with process holding being effectuated for providing additional heating of water in bed bottom zone. EFFECT: increased efficiency. 1 dwg