Bioclastic limestone reservoir heterogeneity research method

The invention provides a bioclastic limestone reservoir heterogeneity research method. The method specifically comprises the following steps that sedimentary microfacies dividing is performed on a bioclastic limestone reservoir; a pore permeability parameter distribution interval standard of different microfacies is built; a region sedimentary facies map is drawn, and the relation between the productivity and sedimentary microfacies belt distribution state of different well locations is inspected; the corresponding relation between main diagenesis types and lithological characters is built through diagenesis type analysis; pore structure research and reservoir classification are performed, and pore diagenetic degree classification grades of different diagenesis types are supplied according to a reservoir classification result; an imitated variable coefficient, an imitated dart coefficient and an imitated range of the bioclastic limestone reservoir are calculated, and numerical intervals of all-grade heterogeneity parameters are supplied. According to the method, the bioclastic limestone reservoir heterogeneity is researched jointly from the macroscopic aspect and microcosmic aspect, and the improvement of the reservoir permeability mechanism knowledge and the guidance of the effective development of oil and gas fields are facilitated.