As an important oil and gas exploration area in Bohai Bay Basin, Bohai N Area, its metamorphic buried hill reservoir is the key research target. The distribution and reservoir types of metamorphic buried hill reservoirs in the N Area of Bohai Sea have obvious changes in the longitudinal direction. It has the characteristics of zoning, strong lateral heterogeneity and poor continuity. It is a typical complex buried hill reservoir. For such reservoirs, the results of conventional inversion methods do not match the geological laws in the plane distribution and vertical zoning of reservoirs, and the inversion effect is poor. Based on the traditional stochastic inversion method, the idea of phase control was introduced, and a phase-controlled stochastic inversion method was proposed based on plane partition and longitudinal zoning control. The waveform clustering analysis was used to divide the study area into several plane similar areas, then vertical zoning based on logging zoning characteristics was performed, and plane zoning characteristics and vertical zoning characteristics was finally synthesized to constrain the modeling process and the probability distribution range of accurate random inversion. The practical application in the N Area of Bohai Sea shows that the inversion results of this technology are consistent with the geological laws, and the horizontal and vertical variation rules of metamorphic rock buried hill reservoirs are accurately depicted, which provides an effective solution for the exploration and development of such complex buried hill reservoirs. It has important practical guiding significance.