廊固凹陷古近系层序地层特征及油气储集规律探讨

Paleogene sequence stratigraphy and oil-gas accumulation in the Langgu subd epression

笔者通过对钻孔岩心资料描述和对比,结合具有系统性、连续性和区域分布特点的地震资料,运用层序地层学和地震地层学基本原理对凹陷区内古近系进行了研究,划分了地层层序,揭示层序地层构造格架,探讨了区域沉积格架特征及其对油气成生、储集的控制作用。

The Langgu subdepression is a majou oil-producing area in the North China oil field.On the basis of the hole core data combined with the seismic data and by using the basic principles of sequence stratigraphy and seismic stratigraphy,the author s studied the Paleogene in the subdepression,distinguished depositional sequenc es,revealed the tectonic framework of sequence stratigraphy and probed into th e char-acteristics of the regional depositional framework and their controllin g effects on petroleum generation and accumulation.