Low permeability oil field water flooding oil well water plugging technology research and application

Triassic reservoir micro crack development, water injection and has a clear direction, easy to cause the injected water flow along the fracture direction of rapid advance, and make the water flooding, oil plant three most Triassic reservoir has entered into high water-cut stage, reservoir micro crack, high permeability zone, initial fracturing larger scale, advanced water injection and other comprehensive factors effects of flooding well number, and a rising trend year by year, and even rapid flooding, severe loss of capacity. In view of this production contradiction, in recent years the three production plant in the full investigation of plugging agent system based on the combination of the three production plant, low porosity, low permeability, fracture reservoir, deep study of residual oil distribution law, follow the injection inlet, blocking, and strong safety principle, has introduction of intelligent development, weak gel, micro nanometer blocking hydrogel, fracture sealing agent for water shutoff in oil well water shutoff material field test, obtained better result, later for efficient development of oil fields and provides reference.