The burial depth of the metamorphic buried hill of the Bozhong sag is more than 4 500 m, however, the controlling factors of the reservoirs are not clear. Based on cores and sidewall cores obtained from 15 wells, this paper describes the reservoir characteristics and discussed their controlling factors. The metamorphic basement of the Bozhong sag consists of metamorphic granite, migmatitic granite and gneiss. These felsic rocks are more likely to develop fractures, thereby improving the reservoir properties. The Indosinian, Yanshanian and Himalayan tectonic events greatly reformed the Bozhong 19-6 metamorphic buried hill, forming a large scale fracture system. Weathering and deep thermal fluid contributed to the development of dissolved pores of the reservoirs. In general, controlled by lithology, tectonics, weathering and deep thermal fluid, the reservoir pattern of the metamorphic buried hill of the Bozhong 19-6 structure was established.

渤中凹陷变质潜山埋深超过4 500 m，但储层控制因素尚不明确。本文基于15口井的岩心和井壁岩心，描述了储层特征并讨论了其控制因素。渤中凹陷变质基底由变质花岗岩、混合花岗岩和片麻岩组成。这些长英质岩石更容易形成裂缝，从而改善储层物性。印支、燕山和喜马拉雅构造事件对渤中19-6变质潜山进行了重大改造，形成了大规模的断裂系统。风化作用和深层热流体促进了储层溶孔的发育。总的来说，受岩性、构造、风化和深部热流体控制，