METHOD FOR OIL POOL DEVELOPMENT Russian patent published in 2009 - IPC E21B43/00 

FIELD: oil and gas production.

SUBSTANCE: invention is related to oil production industry. Method includes cyclic injection of water into watered payout bed, sampling and testing of reservoir fluid samples, measurements of bed pressure and saturation of bug holes with fluids by means of downhole logging methods. In every cycle in phase of bed pressure rise, water injection to bed is carried out until bed pressure reaches limit - maximum value - not exceeding rated pressure values, when gas contained in bug holes is completely dissolved in oil, which is identified in compliance with mathematical expression. In phase of bed pressure decrease - limit - minimum value - its value is established not lower than the pressure, at which gas saturation of bug holes equals critical value that corresponds to beginning of filtration of gas in rock, which released from oil available in bugholes. If gas saturation of bug holes goes below specified minimum value, prior to another cycle of water injection in pool, rated volume of gas or water-gas mixture is injected.

EFFECT: improved oil recovery of bed by water injection.

2 cl, 2 dwg, 2 tbl