Evaluation of hydrocarbon generation of the Xiamaling Formation shale in Zhangjiakou and its significance to the petroleum geology in North China
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- 作者：LiuJuan Xie (1)
YongGe Sun (1) (2)
ZhongWei Yang (2) (4)
JianPing Chen (3)
AiZhu Jiang (2) (4)
YongDong Zhang (2) (4)
ChunPing Deng (3) - 关键词：residual bitumen ; pyrolysis experiment ; Xiamaling Formation shale ; middle Proterozoic ; North China
- 刊名：Science China Earth Sciences
- 出版年：2013
- 出版时间：March 2013
- 年：2013
- 卷：56
- 期：3
- 页码：444-452
- 全文大小：607KB
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YongGe Sun (1) (2)
ZhongWei Yang (2) (4)
JianPing Chen (3)
AiZhu Jiang (2) (4)
YongDong Zhang (2) (4)
ChunPing Deng (3)
1. Department of Earth Science, Zhejiang University, Hangzhou, 310027, China
2. State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou, 510640, China
4. Graduate School of Chinese Academy of Sciences, Beijing, 100049, China
3. Research Institute of Petroleum Exploration and Development, China National Petroleum Corporation, Beijing, 100083, China - ISSN：1869-1897
文摘
The semi-closed pyrolysis simulation system under constant pressure was conducted to explore the characteristics and mechanisms of hydrocarbon generation from Xiamaling Formation shale in Xiahuayuan, North China. The experiment results indicate the oil generated by the Xiamaling Formation shale in oil window should be classified as “aromatic-intermediate-type, whereas the decreasing of dry coefficient can be ascribed to the cracking of residual bitumen in source rock in the stage of high to post maturity. The amount of hydrocarbon gas generated from residual bitumen can be up to 1- m3 per ton rock in high to post mature stage by calculating hydrogen contents in the kerogen, the expelled hydrocarbon, and the residual hydrocarbon. This reveals the importance of residual bitumen as a gas source during high to post mature stage of the kerogen evolution, and also as the broad exploration prospect of these gases. This research highlights the attention should be paid to oil/gas reservoirs sourced from residual bitumen of organic-rich source rock in high mature stage, even the primary oil/gas reservoirs considered as the main exploration targets in middle-upper Proterozoic sediments of North China.