油藏类型与属性的动力学涵义

Discussion on dynamic implications of oil reservoir type and property

油藏的各种属性是成藏动力学环境的体现,具有明确的单一或多重动力学含义。通过分析油柱高度、油藏压力、含油饱和度、油藏类型等油藏属性与不同动力形式的关系,明确了不同油藏属性与成藏动力的内在联系。结果表明:油柱高度、油藏压力与不同的动力形式及聚集过程有关;含油饱和度也与动力形式密切相关,是不同动力学形式的统一反映;油藏类型可随成藏动力而发生变化,表现出不同于圈闭类型的存在样式。不同油藏属性的量化特征可以准确反映成藏动力的类型和量化特征。油藏属性的变化形式在盆地中与不同的区带和油藏类型的演变形式具有明显的关联性,从宏观上反映了盆地成藏动力系统的特征和演变。以不同类型油藏属性及其演变为基础,对成藏动力、油藏属性及成藏机制的深入分析,形成了基于盆地成藏动力学环境及圈闭类型分布特征的油藏预测模式。

All kinds of property of oil reservoir that have definite single or multiple dynamics imp|ications reflect accumulating dynamics. The oil reservoir quantitative feature exactly exhibits the type and quantitative feature of accumulating dynamics. It has close relationship between oil column, reservoir pressure, oil saturation and dynamics. Oil reservoir type is different from trap type because of accumulating dynamics. It is the relationship between evolution of different zones and reservoir types in basin. It macroscopically displays the feature and evolution of basin. Based on the property and evolution of oil reservoir, we classified the accumulating system,and deeply analyze the manifestation of accumulation dynamics, resistance, replacement and accumulation, and then establish the oil reservoir forecasting mode base of basin accumulation dynamics environment and trap type distribution feature.