Geochemical characteristics of crude oil in fluvial deposits from Maling oilfield of Ordos Basin, China

被引：43
作者：
Duan, Yi [1 ]
机构：
[1] Chinese Acad Sci, Inst Geol & Geophys, Key Lab Petr Resources Res, Lanzhou 730000, Peoples R China
来源：
ORGANIC GEOCHEMISTRY | 2012年 / 52卷
基金：
中国国家自然科学基金;
关键词：
ORGANIC GEOCHEMISTRY; SOURCE ROCKS; TARIM BASIN; NORTHWEST CHINA; QAIDAM BASIN; NW CHINA; SEDIMENTS; HYDROCARBONS; MATURATION; MIGRATION;
D O I：
10.1016/j.orggeochem.2012.08.010
中图分类号：
P3 [地球物理学]; P59 [地球化学];
学科分类号：
0708 ; 070902 ;
摘要：
Maling oilfield is one of the earliest discovered oilfields in the Ordos Basin. It is also a typical representative of oil reservoirs in fluvial deposits. However, due to the deficiency of geochemical study on the crude oils and source rocks, the interpretation of the oil origin is largely based on the geological situation. Maling crude oils (21) and source rocks (14) from the basin have been systematically analyzed. The distribution of the biomarkers indicates that the crude oils mainly originated from source rocks deposited under a weakly reducing to sub-oxic, freshwater lacustrine environment. Besides algae, higher land plants have also made an important contribution to the source organic matter. Comparison of the distributions of the biomarkers suggests that there is a correlation between the Maling oilfield oils and the source rocks of the Yanchang Formation. (C) 2012 Elsevier Ltd. All rights reserved.
引用
收藏
页码：35 / 43
页数：9
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