基于构造-地层学的隐蔽圈闭预测——以松南十屋断陷深层为例

Prediction of subtle traps based on tectono-stratigraphy——taking the deep strata of Shiwu fault depression as an example

张青林 任建业

Zhang Qinglin Ren Jianye

同济大学海洋与地球科学学院, 上海 200092; 中国地质大学武汉资源学院, 湖北武汉 430074

School of Ocean and Earth Science, Tongji University, Shanghai 200092; Faculty of Earth Resources, China University of Geosciences, Wuhan 430074

综合运用高精度层序地层学、构造-地层学方法,认为十屋断陷深层发育的各类隐蔽圈闭是下一步勘探工作的重要目标。同时,由于构造对沉积的控制作用,在断陷内部不同的构造部位具有不同的隐蔽圈闭分布特征。十屋断陷西部皮家地区、北部张家屯-八屋地区位于油气主要运移指向区,分别由断裂坡折带和以挠曲型褶皱为特征的弯折带控制的储集砂体十分发育,盖层及保存条件也十分优越,是深部原生岩性、地层油气藏最有利的勘探目标区带。

Based on high-resolution sequence stratigraphy and tectono-stratigraphy, subtle traps are consid-ered as the key exploration targets in Shiwu fault depression in the future. Sediments controlled by structure, and there are different distribution characters of subtle traps in different structural positions of the deep strata of Shiwu fault depression. Pijia and Zhangjiatun-Bawu areas are in the vicinity of hydrocarbon generating center and are located in the directions of petroleum migration. Abundant reservoir sandstones are respectively controlled by fault slope-break and bend slope-break developed here and the sealing and preservation conditions are also very well. So they are the most favorable and realistic exploration zones in the deep strata.