Technology and effect of small well spacing control decline in close well network

In order to further improve oil recovery, water flooding was adjusted for three times from 2009 2012. The spacing of injection-production Wells shortened 250 meters 106 meters, and the density well pattern increased 90.7 196 per square kilometer. This leads problems “rapid rise cut, large difference in formation production, production decline block u”. recent years, we by fine geologic research, poor thin layer use condition, controlling cut rising velocity, as key point, energy recovery network continuously grope dense control regulation technology, gradually formed decreasing “three-excellent” through effective implementation, improved development effect, achieve goal stabilizing control.