埕岛东斜坡地区浊积水下扇沉积模式及分布规律

Sedimentary pattern and distribution rules of turbidite submerged fan on the eastern slope of Chengdao oilfield.

在分析埕岛东斜坡地区构造背景的基础上,研究了浊积水下扇沉积模式,认为东斜坡浊积水下扇的形成和发育与斜坡带侵蚀沟谷发育、坡折带古地形、构造断裂活动、地层上超尖灭等因素密切相关。砂体主要分布于下坡折带及其上沿的缓坡带前缘地区,可形成岩性油气藏和构造岩性油气藏。

On the basis of analyzing the structure on the eastern slope of Chengdao oil field, the sedimentary pattern of turbidite submerged fan is studied. It is considered that the formation and development of turbidite submerged fan of the eastern slope are closely related to the development of erosion trench of the slope belt, the palae-otopography of the slope fold belt, the structural fracture movement, the stratigraphic onlap pinchout and so on. The distribution of sand body is mainly on the downslope fold belt and the frontal zone of the gentle slope belt on the upper of it, and the lithologic and structural-lithologic oil reservoirs can be formed.