【摘要】 从油气藏形成分布控制因素角度出发,提出用“多元控油—主元成藏”这一概念来概括陆相断陷盆地岩性油气藏形成特征和分布规律,以期对岩性油气藏勘探起到指导作用。陆相断陷盆地岩性油气藏的形成和分布受多种地质条件的影响,宏观控制因素(多元)主要有:盆地类型、构造带类型、沉积体系域类型、储集体类型、烃源岩质量以及盆地温—压系统等。在不同盆地,上述条件表现出显著的“差异性”特征。但通过对岩性油气藏形成的自身特点和成藏条件的分析,认为岩性圈闭能否成藏主要受4个主控因素(多元)制约:油气运移通道、流体动力、储层临界物性和砂体封闭条件。对于具体某一个凹陷或构造带,成藏的主要控制因素将更加具体化。更多还原

【Abstract】 Based on the controlling factors of reservoir formation, the concept of "multi-factors controlling and key-factors reservoiring"is brought forward to summarize the formation and distribution characteristics of lithologic reservoirs in continental faulted-depressionbasins so as to direct lithologic reservoir exploration. Influenced by various geologic conditions, macro (multiple) controlling factors oflithologic reservoir’s migration and accumulation in continental faulted-depression basins mainly include: the types of basin, structuralbelt, depositional system tract, reservoir types, source rock quality and basin temperature-pressure system, etc., which present remarkabledifferential properties in different basins. Based on the analysis of the characteristics and conditions of lithologic reservoir’s formation,it is concluded that whether the lithologic trap can form reservoir or not is mainly influenced by the four major factors as follows:migration pathway, dynamic force of fluid, critical physical properties of reservoirs and sealing conditions of sandbody, which are moreconcentrated for certain sag or structural belt.更多还原