2016年12月第35卷第6期
大庆石油地质与开发
Petroleum Geology and Oilfield Development in Daqing
DOI:10. 3969/J.ISSN. 1000-3754.2016. 06. 001
方正断陷原油来源与生排烃模式蒙启安’冯子辉’张帆’邹艳荣？方伟
Dee.，2016 Vol. 35 No. 6
（1.大庆油田有限费任公司勘探开发研究院，黑龙江大庆163712；2.中国科学院广州地球化学研究所，广东广州510640）摘要：方正断陷是位于依舒地堑中部的小型断陷盆地，已发现轻质油和正常原油。对各层位的烃源岩地化特征进行了分析，并利用留酷烷等生物标志物进行油源对比和生排烃模拟实验，对煤系烃源岩的生排烃潜力进行研究，建立了烃源岩生排烃模式。结果显示：原油主要来源于古近系的新安村+乌云组，轻质油主要来源于煤，正常原油主要来源于油页岩；煤和油页岩都可生成较高成熟度的天然气；烃源岩排油门限为150mg/g，大约对应源岩成熟度R。=0.65%，具有排烃较早和生排烃潜力较大的特点。
关键调：方正断陷；原油；油源对比；生排烃模式
中图分类号：TE122.1
文献标识码：A
文章编号：1000-3754（2016）06-0001-05
SOURCESOFTHECRUDEOILANDHYDROCARBONGENERATING ANDEXPULSIONMODELINFANGZHENGFAULTDEPRESSION
MENG Qi'an',FENG Zihui',ZHANG Fan',ZOU Yanrong,FANG Wei
(1. Exploration and Development Research Institute of Daqing Oifield Co Lad., Daqing 163712, China ; 2. Guangzhou Geochemical Research Institute of China Academy of Sciences, Guangzhou 510640, China)
Abstract: Fangzheng Fault Depression is a small rifted basin located in Central Yishu Graben which at east side of the Songliao Basin, the light and normal oils have been discovered. The geochemical characteristics of the hydrocar-bon source rocks in each layer were analyzed, and moreover with the help of the biological markers such as sterane and terpane and so on, the oil source correlations and simulating experiment of the hydrocarbon generation and ex-pulsion were conducted, and then the potentials of the above two aspects werefigured out forthe source rocks in the coal measures, finally the corresponding two modes was established. The study achievements show that the crude oil mainly originates from Paleogene Xin'ancun and Wuyun Formations, the light oil principally come from the coal, while the normal crude oil generally come from the oil shale; both coal and oil shale can generate the natural gas with much higher maturity; the expulsion threshold of the hydrocarbon is 150 mg/g, i. e. corresponds the matura-tion of the source rocks (R=0. 65% or about), thus much more obvious characteristics are shown as follows: ear lier generation and greater potentials of both generation and expulsion for the hydrocarbon.
Key words: Fangzheng Fault Depression; crude oil; oil-source correlation; hydrocarbon generation and expulsion model
收稿日期：2016-02-03
改回日期：2016-07-31
基金项目：国家科技重大专项“大型油气田及煤层气开发”（2011ZX05003-002)。
作者简介：蒙启安，男，1964年生，教授级高级工程师，从事石油勘探及地质研究工作。
E-mail ; mengqian@ petrochina. com. cn
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