收稿日期: 2009-08-31
修回日期: 2010-04-25
网络出版日期: 2010-10-10
基金资助
国家重点基础研究发展计划(“973”）项目“多种能源矿产共存成藏(矿)机理与富集分布规律”项目(编号：2003CB214600）资助.
Discussion on Condition of Immature-Low Mature Oil Formation in Xiangcheng Sag
Received date: 2009-08-31
Revised date: 2010-04-25
Online published: 2010-10-10
姚亚明, 张连生, 乔桂林, 严永新, 何明喜, 马万怡 . 襄城凹陷未熟—低熟油形成条件探讨[J]. 天然气地球科学, 2010 , 21(5) : 815 -821 . DOI: 10.11764/j.issn.1672-1926.2010.05.815
In the view of main geologies of regional tectonic setting and sediment environmental changes in Xiangcheng sag, combining with organic geochemistry of source rock and crude oil, we used organic macerals, inspecting biomarkers and organic petrology to illustrate organic matter abundance and type of source rocks, especially for the parent source of hydrocarbons. We also elucidated the discriminating indices and genetic origin of immature oil in Hetaoyuan Formation of Xiangchen sag, and pointed out the main geological conditions for immature-low mature oil formation. We suggested that self-generating and self-preserving fault noses, lithological and fracture reservoirs would be a favorable exploration area in the Eh2 Member, for these reservoir has the short migration and handy accumulation of oil and gas.
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