潜山圈闭含油气系统特征研究

STUDY ON THE CHARACTERISTICS OF PETROLEUM SYSTEMS IN BURIED-HILL TRAPS

甘华军 王华 韩晋阳 陈亮 严德天

GAN Hua-jun WANG Hua HAN Jin-yang CHEN Liang YAN De-tian

中国地质大学, 资源学院, 湖北, 武汉, 430074

Faculty of Earth Resources, China University of Geosciences, Wuhan, Hubei 430074, China

针对潜山圈闭地质背景比较复杂、潜山油气藏的研究与勘探比较困难的特点,论述了潜山圈闭的特征和研究的复杂性,并以含油气系统概念为基础,分析了潜山圈闭含油气系统的各种要素和作用过程。依据烃源岩地层与潜山基底形成时间的对比及其两者之间的空间配置关系,作者提出了3种潜山圈闭含油气系统或子系统的模式:新生古储型、古生新储型和古生古储型。结合实际的潜山油气藏的特征,以3种模式为基础,作者分析了潜山圈闭单一型和复合型含油气系统的特征,同时对潜山圈闭含油气系统的描述方法及勘探方法进行了探讨,给出了潜山圈闭含油气系统的工作思路。这对潜山油气藏的研究和勘探具有重要的理论和实践意义,也为其它已知油藏圈闭含油气系统的研究提供了参考和借鉴。

As we know,the geologic background of buried-hill traps is very intricate,and the study and exploration of buried-hill oil pools are quite difficult.The paper discussed the characteristics and complexity of buried-hill traps and analyzed the elements of buried-hill trap petroleum systems and their action processes based on the conception of petroleum systems.According to the contrast of formation time between source rock strata and buried-hillbasement and spatial-matching relationshipbetween them,three petroleum system or subsystem models of buried-hill traps were suggested,that is,the new source-old reservoir type,the old source-new reservoir type and the old source-old reservoir type.Associated with the examples and based on the three models,the authors also analyzed the characteristics of single and compound petroleum systems,discussed the methods of description and exploration and suggesed the ways of work.This would be of important theoretical and practical significance to the study and exploration of buried-hill pools,and also can be used as references for the study of petroleum systems in other known oil-pool traps.

https://doi.org/10.11781/sysydz200404338