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| 低熟油、烃源岩中含氮化合物分布规律及其地球化学意义 | |
| 引用本文： | 李素梅,庞雄奇,黎茂稳,金之钧.低熟油、烃源岩中含氮化合物分布规律及其地球化学意义[J].地球化学,2002,31(1):1-7. |
| 作者姓名： | 李素梅 庞雄奇 黎茂稳 金之钧 |
| 作者单位： | 1. 石油大学盆地与油藏研究中心,北京昌平,102200加拿大联邦地质调查局,卡尔加里分部 2. 石油大学盆地与油藏研究中心,北京昌平,102200 3. 加拿大联邦地质调查局,卡尔加里分部 |
| 基金项目： | 国家重大基础研究项目(G1999-43310) |
| 摘 要： | 对八面河地区原油、油砂以及不同成熟度和岩性有异的烃源岩中吡咯类化俣物的分布特征及其潜在的地球化学意义进行了探讨。结果表明，随着成熟度的增加，八面河地区烃源岩中吡咯类化合物中屏蔽化程度高的异构体比屏蔽化程度低的异构体富集，咔唑及苯并咔唑系列中低相对分子质量的同系物比高相对分子质量的同系物富集，苯并a]咔唑比苯并c]咔唑富集。八面河地区原油中吡咯类化合物有较为明显的运移分馏效应，观察到高、低相对分子质量的同系物间的运移分馏效应比不同类型异构体间的分馏效应更为显著，而前者受成熟度的影响可能相对小于后者；发现吡咯类化合物的油气运移分馏效应不仅体现于不同氮官能团屏蔽、半屏蔽和暴露三类异构体间，同样体现于同一类型的同分导师构体之间，指示此类化合物有较强的活性。吡咯类化俣物与烃类化合物一样具有多方面潜在的地球化学意义。 |
| 关 键 词： | 低熟油 油气运移 烃源岩 成熟度 含氮化合物 分布规律 地球化学 |
| 文章编号： | 0379-1726(2002)01-0001-07 |
| 修稿时间： | 2000年11月20 |
Characteristics of pyrrolic nitrogen compounds and their geochemical significance in oils and rocks of Bamianhe oilfield, eastern China |
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| LI Su mei,PANG Xiong qi,LI Mao wen,JIN Zhi jun.Characteristics of pyrrolic nitrogen compounds and their geochemical significance in oils and rocks of Bamianhe oilfield, eastern China[J].Geochimica,2002,31(1):1-7. | |
| Authors: | LI Su mei PANG Xiong qi LI Mao wen JIN Zhi jun |
| Institution: | LI Su mei1,2,PANG Xiong qi1,LI Mao wen2,JIN Zhi jun1 |
| Abstract: | A discussion of relative distribution and geochemical significance of pyrrolic nitrogen compounds in crude oils, oil sands and potential source rock bitumens with wide range of maturity and lithology from Bamianhe oilfield, eastern China are executed. Results show that with increasing of maturity, the extracts of the source rocks show a tendency to enrich nitrogen shield isomers relative to nitrogen exposed isomers; low relative molecular mass of the compounds of carbazoles and benzocarbazoles series relative to high molecular mass ones; and benzocarbazole relative to benzocarbazole. Significant oil migration effects of nitrogen compounds in the oils are observed. It seems migration effect among pseudo homolog of carbazoles and benzocarbazoles is more apparent than that among nitrogen marked, partially marked and exposed isomers. It is inferred that the impact of maturity on the former is much more than that of the later. Results also indicate that migration effect of the compounds could be observed not only between different type isomers but also between the same type isomers suggesting strong polarity and its difference among the compounds. |
| Keywords: | low maturity oil petroleum migration source rock maturity nitrogen compounds |
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