Study on Water Flooding Quantification Method of Interwell Injection and Production

In view of the difficulties of water injection adjustment and low efficiency of manual adjustment caused by overlapping well patterns and complex injection-production relationship when P oilfield enters the ultra-high water cut stage, this paper establishes the calculation method of injection-production flow component by using the principle of material balance and comprehensively considering formation coefficient, quality of inter-well connectivity, inter-well position and seepage characteristics. The quantification of the injection-production relationship between oil and water Wells in the sedimentary unit can provide a theoretical basis for the automation of measure adjustment, and lay a foundation for the high-quality and efficient adjustment of multi-layer and multi-well group water injection under the condition of multi-well pattern in the late period of extra-high water cut.