Study on optimal combination of stratified water injection in extra high water cut period

After several decades of mining, the block has entered development stage ultra-high water cut. Although encryption adjustment and subdivision for different mining objects have been completed, interlayer interference is still serious invalid cycle exists, making it difficult to develop adjust. The injection well can further improve production degree various oil layers, effectively utilization rate injection, realize profile structure, which one measures with low investment that effect flooding. To satisfy needs reservoir, fine operation based on dynamic data analysis monitoring data, application multidisciplinary reservoir description technology, quantitative thin layered segment permeability variation coefficient, monolayer onrush small layer in paragraph number, interval sandstone thickness influence effect, test costs economic benefits, A series combination parameters are obtained, guide program, alleviate range decline cut rise, provide technical support tapping potential flooding period.