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摘要: 目前国际上掀起了地震沉积学的研究热潮，国外学者在北美、印度等含油气盆地进行了一系列的地震沉积学研究，并在油气勘探和开发方面取得了明显的效果，因此本文利用相位调整和地层切片两项关键技术，对黄骅坳陷歧南凹陷沙一层序进行了地震沉积学的研究。在对研究区内各个层序界面精细解释的基础上，利用Recon软件制作了研究区内一系列的地层切片，这些切片提供了沙一层序沉积体系连续的地震图像，刻划了辫状河三角洲沉积体系在不同时期的展布范围以及水下分支河道和间湾的分布位置，为该凹陷寻找薄层隐蔽油气藏提供了较可靠的依据。Abstract: The foreign geophysicists and geologists carried through a series of seismic sedimentological studies in North America and Indonesia Basins and got the obvious results in exploration and development of oil and gas. Therefore we carried out seismic sedimentological studies in Qikou Sag of Huanghua Depression using two techniques, that is, phase shift and stratal slicing. On the basis of the exact interpretation of the sequence boundaries, a series of stratal slices were displayed by the Recon software. Those stratal slices provided sequential imagery of depositional systems of Shayi sequence, depicted the distribution range of braidedfan delta deposit through the geologic time and the position of underwater branch channels and interchannels. This study provided the reliable evidence for searching the subtle traps of the area.
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Key words:
- Huanghua depression /
- Qinan sag /
- seismic sedimentology /
- phase shift /
- stratal slicing
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