濮城油田沙三中亚段水下扇的特征

详细信息

Submarine fan sediments in the middle submember of the third member of the Shahejie Formation in the Pucheng Oil Field, Henan

摘要: 濮城油田沙三中亚段为水下扇沉积,具牵引流和重力流的双重特征。沉积物粒度较细,以细砂岩和粉砂岩为主。垂向层序为正粒序。沙三中亚段具沟道、沟道间、席状砂和泥石流等微相沉积的特征。
- 水下扇 /
- 沉积模式 /
- 沙三中亚段 /
- 濮城油田
Abstract: The middle submember of the third member of the Shahejie Formation in the Pucheng Oil Field, Henan is interpreted to be the submarine fan sediments, which are characteristic of both the tractional current and gravity flow-deposits. These sediments are dominantly fine-grained, and composed significantly of fine-grained sandstones and siltstones with normally-graded vertical sequences. Twenty lithofacies have been identified, on the basis of rock types, sediment grain sizes and sedimentary structures and textures, and vertically may be arranged into the following microfacies such as channel, interchannel, sheet sandstone, abyssal lake and bathyal lake, debris flow and slump deposits. A sedimentary model is presented in this study, showing the planar distribution of the vertical facies sequences and sedimentary microfacies in the study area.
- subaqueous fan /
- sedimentary model /
- the middle submember of the third member of the Shahejie Formation /
- Pucheng Oil Field