Key words: saturation pressure, bottomhole pressure, dissolved gas dry, mobility ratio, filtration zone, compositional three-dimensional hydrodynamic modeling, waterflooding, oil viscosity.
It is noted that the bottomhole pressure decrease below the saturation pressure leads to formation of zones with dominated three-phase filtering in the reservoir. Moreover with the increase in oil viscosity the size of these zones increases. The technique is suggested, based on the account of the mobilities relation and allowing to quantify the impact of wells transfer into operation mode with the pressures below the saturation pressure on the development of reserves.
