不同沉积环境中原油氮同位素差异特征研究

刘娅昭; 武明辉; 师生宝; 王杰; 李伟

doi:10.11781/sysydz201501088

不同沉积环境中原油氮同位素差异特征研究

doi: 10.11781/sysydz201501088

1.
中国石化石油勘探开发研究院无锡石油地质研究所, 江苏无锡 214126
2. 中国石油大学(北京) 油气资源与探测国家重点实验室, 北京 102249
3. 中国石化石油勘探开发研究院, 北京 100083

详细信息

作者简介:
刘娅昭(1985-),女,硕士,工程师,从事石油地质综合研究.E-mail:liuyazhao.syky@sinopec.com.

中图分类号: TE133.1
计量
- 文章访问数: 1175
- HTML全文浏览量: 97
- PDF下载量: 970
- 被引次数: 0
出版历程
- 收稿日期: 2013-11-30
- 修回日期: 2014-11-03
- 刊出日期: 2015-01-28

Differences of nitrogen isotopes in crude oils from different depositional environments

1.
Wuxi Research Institute of Petroleum Geology, SINOPEC, Wuxi, Jiangsu 214126, China
2. State Key Laboratory of Petroleum Resources and Prospecting, China University of Petroleum (Beijing), Beijing 102249, China
3. SINOPEC Petroleum Exploration and Production Research Institute, Beijing 100083, China

摘要

摘要: 氮作为原油及沉积有机质中的重要元素,由于不同沉积环境中母质来源不同和后期埋藏成岩过程不同,其含量和同位素比值明显不同.以尿素、咖啡因为标样,对不同沉积环境中原油氮的含量和氮同位素比值进行实验测定,发现由原油氮同位素值和氮的含量可以确定不同沉积环境,而且不同沉积环境中原油的碳同位素值与氮同位素值有很强的相关性,海相环境烃源岩形成的原油碳/氮同位素较陆相环境烃源岩形成的原油碳/氮同位素偏轻,其中氮同位素值的差异更加明显.对于相同沉积环境,原油受埋深高温裂解作用导致氮同位素分馏,使得原油中富集¹⁴N,从而高熟油氮同位素值偏轻.
- 氮含量 /
- 氮同位素 /
- 碳同位素 /
- 不同沉积环境 /
- 成熟度 /
- 原油
Abstract: As an important element of oil and organic matter, the contents and isotopes of nitrogen are different due to different sources from different environments and different late diagenetic processes after burial.The contents and isotopes of nitrogen in urea and caffeine show that these nitrogen parameters of samples are highly variable and indicate different depositional environments. The carbon and especially the nitrogen isotopes of crude oils formed in marine environments are lighter than those in continental environments, For samples from the same environment, high-temperature cracking causes nitrogen isotope fractionation. ¹⁴N is enriched in crude oils and nitrogen isotopes are lighter in high-maturity oils.
- nitrogen content /
- nitrogen isotope /
- carbon isotope /
- different depositional environment /
- maturity /
- crude oils

HTML全文

参考文献(16)

[1]	Williams L B,Ferrell Jr R E,Hutcheon I,et al.Nitrogen isotope geochemistry of organic matter and minerals during diagenesis and hydrocarbon migration[J].Geochimica et Cosmochimica Acta,1995,59(4):765-779.
[2]	朱岳年,史卜庆.天然气中N₂来源及其地球化学特征分析[J].地质地球化学,1998,28(4):50-57. Zhu Yuenian,Shi Buqing.Analysis on origins of molecular nitrogen in natural gases and their geochemical features[J].Geology Geochemistry,1998,28(4):50-57.
[3]	陈传平,梅博文,熊涛,等.原油生物降解中含氮化合物δ¹⁵N变化原因的实验研究[J].地球化学,2004,33(1):53-56. Chen Chuanping,Mei Bowen,Xiong Tao,et al.Experimental research on the causation of crude oil δ¹⁵N variation in biodegradation[J].Geochimica,2004,33(1):53-56.
[4]	郑永飞,陈江峰.稳定同位素地球化学[M].北京:科学出版社,2000:248-259. Zheng Yongfei,Chen Jiangfeng.Stable isotope geochemistry[M].Beijing:Science Press,2000:248-259.
[5]	徐军,张敏,谢平.氮稳定同位素基准的可变性及对营养级评价的影响[J].湖泊科学,2010,22(1):8-20. Xu Jun,Zhang Min,Xie Ping.Variability of stable nitrogen isoto-pic baselines and its consequence for trophic modeling[J].Journal of Lake Sciences,2010,22(1):8-20.
[6]	范志影,周陈维.杜马斯燃烧定氮法在农产品品质检测中的应用[J].现代科学仪器,2006(1):45-46. Fan Zhiying,Zhou Chenwei.Application of Dumas combustion method for nitrogen analysis on agricultural products[J].Modern Scientific Instruments,2006(1):45-46.
[7]	谢文彦,姜建群,张占文,等.辽河盆地大民屯凹陷油气性质及成因机制研究[J].石油实验地质,2004,26(3):292-297. Xie Wenyan,Jiang Jianqun,Zhang Zhanwen,et al.Petroleum cha-racters and formation mechanism in the Damingtun sag of the Liaohe Basin[J].Petroleum Geology & Experiment,2004,26(3):292-297.
[8]	马安来,李贤庆,包建平,等.江汉盆地下第三系烃源岩生烃组分剖析[J].江汉石油学院学报,1999,21(2):16-19. Ma Anlai,Li Xianqing,Bao Jianping,et al.Hydrocarbon generation macerals of Paleogene source rocks in Jianghan Basin[J]. Journal of Jianghan Petroleum Institute,1999,21(2):16-19.
[9]	贾承造.塔里木盆地构造特征与油气聚集规律[J].新疆石油地质,1999,20(3):177-183. Jia Chengzao.Structural characteristics and oil/gas accumulative regularity in Tarim basin[J].Xinjiang Petroleum Geology,1999,20(3):177-183.
[10]	顾忆,黄继文,邵志兵.塔河油田奥陶系油气地球化学特征与油气运移[J].石油实验地质,2003,25(6):746-750. Gu Yi,Huang Jiwen,Shao Zhibing.Petroleum geochemistry and hydrocarbon migration in Tahe oilfield of the Tarim Basin[J].Petroleum Geology & Experiment,2003,25(6):746-750.
[11]	陈传平,梅博文.中国不同沉积环境的氮同位素特征[J].石油与天然气地质,2001,22(3):207-209. Chen Chuanping,Mei Bowen.Characteristics of nitrogen isotope in different depositional environments in China[J].Oil & Gas Geology,2001,22(3):207-209.
[12]	刘贤赵,张勇,宿庆,等.陆生植物氮同位素组成与气候环境变化研究进展[J].地球科学进展,2014,29(2):216-226. Liu Xianzhao,Zhang Yong,Su Qing,et al.Progress of research on relationships between terrestrial plant nitrogen isotope composition and climate environment change[J].Advances in Earth Science,2014,29(2):216-226.
[13]	Falkowski P,Scholes R J,Boyle E,et al.The global carbon cycle:A test of our knowledge of earth as a system[J].Science,2000,290(5490):291-296.
[14]	李洪波.塔北隆起北缘原油轻烃单体烃碳同位素特征[J].石油实验地质,2013,35(3):302-306.Li Hongbo.Compound specific carbon isotope composition of light hydrocarbons in crude oils from the north of the Northern Tarim Uplift[J].Petroleum Geology & Experiment,2013,35(3):302-306.
[15]	王起琮,张阳,肖玲.鄂尔多斯盆地奥陶系碳酸盐岩成岩相碳、氧稳定同位素特征[J].石油与天然气地质,2013,34(5):652-658.Wang Qicong,Zhang Yang,Xiao Ling.Carbon and oxygen stable isotopic features of diagenetic facies of Ordovician carbonate rocks in Ordos Basin[J].Oil & Gas Geology,2013,34(5):652-658.
[16]	孟凡超.松辽盆地深层天然气碳同位素反序及形成机理探讨[J].特种油气藏,2013,20(2):25-28.Meng Fanchao,Ran Qingchang.Discussion on negative carbon isotope series and mechanisms of natural gas in deep of Songliao Basin[J].Special Oil & Gas Reservoirs,2013,20(2):25-28.