Characteristics of Xujiahe Formation source rock and process of hydrocarbon-generation evolution in Puguang Area

被引：5
作者：
Li S. [1 ,2 ]
Wang S. [3 ]
Bi J. [2 ]
Zeng Z. [2 ]
He Y. [2 ]
机构：
[1] Postdoctoral Research Workstation, Zhongyuan Oilfield Company, SINOPEC, Zhengzhou
[2] Research Institute of Exploration & Development, Zhongyuan Oilfield Company, SINOPEC, Zhengzhou
[3] Exploration Business Division, Zhongyuan Oilfield Company, SINOPEC, Puyang
来源：
| 1600年 / China University of Geosciences卷 / 41期
关键词：
Geophysical prediction; Hydrocarbon-generation evolution; Organic carbon content; Petroleum geology; Puguang area; Source rock;
D O I：
10.3799/dqkx.2016.071
中图分类号：
学科分类号：
摘要：
The source rock characteristics, which can be evaluated quantitatively by the geophysical prediction, are the basis of the hydrocarbon-generation evolution study. However, it is difficult to carry out a quantitative evaluation of the total organic carbon (TOC) content and thickness for the source rock in Puguang area due to lack of available drillings. The TOC content and thickness of Xujiahe Formation source rock in Puguang area were geophysically predicted by the quantitative prediction technology of the TOC volume in this study. The results show that Xujiahe Formation is mainly a fair source rock with the TOC values ranging from 0.6% to 1.5%, and the distribution of the TOC content is mainly in the banded structure. The general thickness of the effective source rock ranges from 20 to 30 m in Xusan Member, and 30 to 40 m in Xuwu Member, respectively. The erosion thickness is about 2 000 to 5 000 m with a decreasing trend from the high part of the structure to both sides of the study area at Late Yanshanian. At the end of Jurassic, Xusan Member source rock reached the mature stage in most areas; but for Xuwu Member, only the source rock in the northern sag reached the mature stage and the hydrocarbon threshold. At present, Xusan and Xuwu Member source rocks are basically in the high maturity-over mature stage generating gas mainly, and the maturity decreases from north to south. © 2016, Editorial Department of Earth Science. All right reserved.
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页码：843 / 852
页数：9
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