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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。
From the perspective of formation and distribution controlling factors of oil and gas reservoirs, this paper proposes the concept of “multiple oil control-principal component accumulation” to summarize the formation characteristics and distribution of lithologic reservoirs in continental rift basin. Guidance. The formation and distribution of lithologic reservoirs in the continental rift basin are influenced by a variety of geological conditions. The macro-control factors (multivariate) are mainly basin type, tectonic belt type, sedimentary system domain type, reservoir type, source rock mass As well as basin temperature - pressure system. In different basins, the above conditions show significant “difference” characteristics. However, based on the analysis of its own characteristics and reservoir-forming conditions, it is considered that whether or not the lithologic trap can accumulate is mainly controlled by four main controlling factors (multivariate): hydrocarbon migration channels, fluid dynamics, reservoir criticality Physical properties and sealing conditions of sand body. For a particular depression or tectonic belt, the main controlling factors of reservoir formation will be more specific.