关于东濮凹陷构造单位的探讨

Discussion on structural units of Dongpu Depression

程秀申 漆家福 陈书平 王风英 顾 勤 刘丽莉

中国地质大学能源学院，北京100083 中原油田分公司勘探开发科学研究院，河南 濮阳 457001 中国石油大学资源与信息学院，北京102249

School of Energy Resources, China University of Geosciences, Beijing 100083, China Research Institute of Exploration and Development, Zhongyuan Oilfield Company, SINOPEC, Puyang 457001, China Faculty of Natural Resource and Information Technology, China University of Petroleum, Beijing 102249, China

现行的构造单位划分方案中，东濮凹陷属于临清坳陷，是位于渤海湾盆地最南端的一个负向三级构造单位。文中根据区域地质、地球物理资料和中、新生代盆地构造演化特征，分析了东濮凹陷在地质背景、地质结构、沉积作用、构造演化和含油气性等8方面都不同于临清坳陷的其他凹陷，提出了东濮凹陷是渤海湾盆地区中一个相对独立的古近纪构造单元，而不应该属于临清坳陷的次级构造单元的新认识。将东濮凹陷作为一个相对独立的古近纪裂陷盆地，对探讨渤海湾新生代盆地区中的富油凹陷理论、总结富油凹陷的油气聚集规律具有重要意义。

In present structural unit classification scheme, Dongpu Depression belongs to Linqing Sag as a third class negative element in the southmost of Bohai Gulf Basin. According to regional geologic data, geophysical data and basin evolution of Mesozoic and Cenozoic, this paper has analyzed geologic setting, geologic framework, deposition, structural evolution, hydrocarbon bearing property of Dongpu Depression, which is different from that of Linqing Sag. So this paper puts forward that Dongpu Depression is a relatively independent structural unit of Baleaogene in Bohai Gulf Basin but not a sub structural unit belonging to Linqing Sag. This
new understanding, that is, taking Dongpu Depression as an absolute Baleaogene rift basin, will play an important role in researching prolific depression theory and summarizing hydrocarbon accumulation law of Mesozoic basin in Bohai Gulf.