方正断陷原油来源与生排烃模式
SOURCES OF THE CRUDE OIL AND HYDROCARBON GENERATING AND EXPULSION MODEL IN FANGZHENG FAULT DEPRESSION
查看参考文献14篇
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文摘
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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,并利用甾萜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150 mg/g,大约对应源岩成熟度R_o=0.65%,具有排烃较早和生排烃潜力较大的特点。 |
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其他语种文摘
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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 hydrocarbon 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 expulsion were conducted, and then the potentials of the above two aspects were figured out for the 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 maturation of the source rocks (R_o=0.65% or about), thus much more obvious characteristics are shown as follows: earlier generation and greater potentials of both generation and expulsion for the hydrocarbon. |
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来源
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大庆石油地质与开发
,2016,35(6):1-5 【扩展库】
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DOI
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10.3969/J.ISSN.1000-3754.2016.06.001
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关键词
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方正断陷
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原油
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油源对比
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生排烃模式
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地址
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1.
大庆油田有限责任公司勘探开发研究院, 黑龙江, 大庆, 163712
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中国科学院广州地球化学研究所, 广东, 广州, 510640
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语种
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中文 |
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文献类型
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研究性论文 |
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ISSN
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1000-3754 |
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学科
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石油、天然气工业 |
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基金
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国家重大科技专项
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文献收藏号
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CSCD:5854688
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