Hydrocarbon Generation of Paleogene Source Rocks in Qikou Sag
详细信息
- 责任者：Yu Xuemin (Research Institute of Exploration & Development ; Dagang Oilfield ; CNPC ; Tianjin 300280 ; China) ; He Yongmei
- 刊名：Natural Gas Geoscience
- 出版年：2011
- 卷期：22(6)
- 关键词：烃源岩 ; source rocks ; 黄骅坳陷 ; Huanghua Depression
- 页码：p.1001-1008
- 图表：11 illus., 2 tables, 10 refs.
- 分类号：1003
- issnNo：ISSN1672-1926
- isbnNo：CN62-1177/TE
摘要
The sedimentary rock distributes extensively with large thickness in the Qikou rifted basin. As a result of provenance development both inside and outside the basin and frequent tectonic movements, the sedimentary environment and depositional systems are various. In the sag, the widespread oil shale is developed with exception of lacustrine shale. Also, as a result of over pressure developed in the deep formation, the depth for the mature threshold of source rock is big with long hole section under the abnormal over pressure. Therefore, the depth for the threshold of large oil and gas generation is larger than that of general source rock.