盐湖盆地成藏动力学系统划分及其意义——以东濮凹陷为例  

Classification and Significance of Reservoir-forming Dynamic System in Salt Lake Basin

作　　者：唐文旭[1] 叶加仁[2] 吴娟[2] 胡玉杰[3] 

机构地区：[1]中国石化江汉油田勘探开发研究院,湖北潜江433124 [2]中国地质大学资源学院,湖北武汉430074 [3]中国石化中原油田勘探开发科学研究院,河南濮阳457001

出　　处：《资源环境与工程》2009年第1期23-27,共5页Resources Environment & Engineering

摘　　要：根据高精度层序地层高频沉积旋回、泥岩欠压实、有机地球化学特征,结合封闭条件和盐湖盆地地层发育差异性特征,将东濮凹陷古近系—第四系自上而下划分为5个成藏动力学系统,即顶部它源常压开放成藏动力学系统、上部混源常压开放成藏动力学系统、中部混合源弱超压半封闭成藏动力学系统、下部自源超压半封闭成藏动力学系统、底部自源超压封闭成藏动力学系统,其中下部成藏动力学系统是东濮凹陷最重要的油气系统。这种成藏动力学系统的划分对指导东濮凹陷的盐湖盆地油气勘探,寻找隐蔽性油气藏具有重要意义,也为类似盆地勘探与研究提供了借鉴模式。Based on these characteristcs of high frequency sedimentary cycles of high accuracy sequence stratigraphy, undercompactions of mudstone, organic geochemistry, the formations from Eogene to Quaternary in Dongpu Depression are classified into five kinds of reservoir-forming dynamic systems, which is listed as follows：the top is other-sourced normal pressure open dynamic system, the upper is mixed-sourced normal pressure open dynamic system, the middle is mixedsourced low overpressure semi-closed dynamic system, the lower is self-sourced overpressure semi-closed dynamic system, and the bottom is self-sourced low overpressure closed dynamic system. Of these dynamic systems, the lower and middle dynamic systems are the most important hydrocarbon exploration systems. This classification not only is of great significant for guiding hydrocarbon exploration and searching for subtle reservoirs in Salt Lake Basin of Dongpu Depression, but also provides reference mode for similar basin exploration and research.

关 键 词：盐湖盆地 油气成藏动力学系统 划分与特征 勘探思路 

分 类 号：TE121.1[石油与天然气工程—油气勘探]