Quantitative calculation method for single-well productivity interlayer interference coefficient of multi-layer combined oil production reservoir

The invention provides a quantitative calculation method for a multilayer oil reservoir commingling production single well productivity interlayer interference coefficient, and belongs to the technical field of oil and gas field exploration and development, and the quantitative calculation method comprises the following steps: based on logging parameters, determining the number of oil layers developed by a research object single well and the thickness and permeability of each oil layer; sorting the multiple layers of oil reservoirs according to the permeability; the interference problem of commingling production of the multi-layer oil reservoir is decomposed into the interference problem between a plurality of two-layer oil reservoirs; establishing the relationship between the commingling production interlayer interference coefficient of the two oil reservoirs and the permeability level difference; calculating an interference coefficient between the two layers of oil reservoirs; calculating the total interfer