关键词: 冀中坳陷, 二连盆地, 断陷盆地, 沉积特征, 复式输导系统, 三元成藏模式, 油气藏分布

Abstract: According to the reservoir-formation mechanism,exploration situation and potential hydrocarbon resources,the geologic distribution of reservoirs in the fault basins of Jizhong Paleocene and Erlian Early Cretaceous periods were analyzed.In the course of complex geologic evolution,three elements of the fault basin including "sedimentary evolution-sedimentary facies-reservoir facies","structural zone-temperature-pressure field-hydrocarbon potential" and "transporting system" were gradually adjusted from the dynamic variation to the static equilibrium.Under the particular geologic condition and 3-dimensional space,six types of relative independent "complex transporting system" were constituted,including fault,ladder-shape,grid,plane,sitting chair and fissure types.Various complex reservoirs or complex reservoir zones were generated in fault basin.This reservoir model is the facies-potential-transport ternary reservoir model.The ternary reservoir model controlled rigorously the regular distribution,enrichment degree and exploration prospect of hydrocarbon in the rich oil trough.

Key words: Jizhong Depression, Erlian Basin, fault basin, sediment characteristic, complex transporting system, ternary reservoir model, reservoir distribution