METHOD OF OIL POOL DEVELOPMENT Russian patent published in 2003 - IPC

FIELD: development of oil pools with waterflooding of producing formations. SUBSTANCE: method provides for equalization of waterflooding front, shutoff of water inflow to producing wells and elimination of overflows in injection and producing wells. Constructed for noninvestigated wells are isobar charts of two formations adjacent in section and regions with similar coordinates are revealed whose formation pressures differ by, at least, 10%. Constructed for these formations are maps of values of accumulated compensation of withdrawn fluid by injection, and using these maps regions with similar coordinates are revealed whose accumulated compensations differ by at least, 10%. Regions with said congruent values are singled-out. All found on these regions emergency, abonded and noninvestigated wells are singled-out and they are considered with possible interformation overflows of fluids. On regions with absent congruentces, wells are considered as those in which infraformation overflow is possible. Selected near singled- out wells on formation regions with high actual formation pressure and accumulated compensation, are running wells through which tracing fluids are injected in this formation. Appearance of these fluids in running wells of singled-out region of other formation is monitored. For regions with absent congruencies, monitoring is carried out in running wells of same formation. Injected into wells, in which injection of tracing fluids resulted in reaction of wells of other formation, is water shutoff substances. They are injected in volume with consideration of parameters of tracing fluid injection. EFFECT: provided elimination of inter- and infraformation overflows in all wells.