Analysis on Hydrocarbon Accumulation Mechanism in Machang Area of Dongpu Depression
详细信息
- 责任者：Guo Dianbin (Research Institute of Exploration and Development ; Zhongyuan Oilfield Company ; SINOPEC ; Puyang 457001 ; China) ; Fang Qian
- 刊名：Fault-Block Oil and Gas Fields
- 出版年：2012
- 卷期：19(1)
- 关键词：原油 ; crude oil ; 油气藏形成 ; reservoir formation ; 东濮凹陷 ; Dongpu Sag
- 页码：p.1-5
- 图表：5 illus., 13 refs.
- 分类号：1003
- 出版序号：20130292
- issnNo：ISSN1005-8907
- isbnNo：CN41-1219/TE
摘要
In order to clarify the characteristics of hydrocarbon accumulation mechanism in Machang area, this paper analyzes the data of saturated hydrocarbon, aromatic hydrocarbon and asphaltene of crude oil in Machang area. The results show that there are two kinds of crude oils,which are all mature crude oils with different maturity. On the whole, the crude oils on the top structure have low maturity, while the crude oils on the wing structure have high maturity. The maturity of crude oils is increasing gradually from the top to the wing structure. By analyzing the characteristics of hydrocarbon source rock, fracture development history and hydrocarbon charge history, it is considered that the maturity difference of crude oils on the top structure depends on the orderly filling of crude oils caused by the orderly activities of Madong fracture and the maturity difference of crude oils on the wing structure mainly depends on the denudation thickness in Dongying tectonic period and the size of late sedimentary thickness.
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