古地理学报2012，Vol.14Issue(4)：487-498,12.
黄骅坳陷歧口凹陷古近系沙三2亚段辫状河三角洲沉积模拟实验研究
Sedimentation simulation experiment of braided fluvial delta of the second submember of Member 3 of Paleogene Shahejie Formation in Qikou Sag of Huanghua Depression
文沾 1刘忠保 1何幼斌 1苑伯超 1罗进雄 1蒲秀刚 2陈长伟 2林常梅2
作者信息
- 1. 长江大学地球科学学院,湖北荆州434023
- 2. 中国石油大港油田分公司勘探开发研究院,天津300280
- 折叠
摘要
Abstract
The Shahejie Formation of Paleogene in Qikou Sag of Huanghua Depression is the main target strata of Dagang Oilfield, which is dominated by braided fluvial delta and fan delta sandbodies. The braided fluvial delta is the favorable reservoir. Based on the study of regional tectonic, palaeogeomorphol-ogy feature, sedimentary system of the study area, the formation process of the braided fluvial delta is reconstructed and the sedimentary microfacies feature are observed through using the technology of simulation experiment. The experiment shows that the braided fluvial delta from the Kongdian provenance can be divided into 3 subfacies and 7 microfacies. The systematic study on the main controlling factors of the formation and evolution of the braided fluvial delta is completed. It is proved that basement subsidence, relative lake level changes, flow and flow fluctuation, amount of adding sand and mud ( sediment supply) and so on are the main controlling factors. By comparing the actual and the experimental thickness of sand body, the distribution of the favorable reservoir in the study area has been predicted. Based on the initial geological pattern and combining with the phenomena and results of the simulation experiment, the sedimentary model of the braided fluvial delta of the second submember of member 3 of Paleogene Shahejie Formation ( Es3 ) in Qikou Sag of Huanghua Depression is set up under the experimental condition.关键词
黄骅坳陷/歧口凹陷/沉积模拟/辫状河三角洲/控制因素/沉积模式Key words
Huanghua Depression, Qikou Sag, sedimentation simulation, braided fluvial delta, controlling factors, sedimentary model分类
天文与地球科学引用本文复制引用
文沾,刘忠保,何幼斌,苑伯超,罗进雄,蒲秀刚,陈长伟,林常梅..黄骅坳陷歧口凹陷古近系沙三2亚段辫状河三角洲沉积模拟实验研究[J].古地理学报,2012,14(4):487-498,12.
