全部 标题 作者
关键词 摘要

OALib Journal期刊
ISSN: 2333-9721
费用:99美元

查看量下载量

相关文章

更多...
地质学报  2003 

柴达木盆地原油地球化学特征及其源岩时代判识

, PP. 272-279

Keywords: 油源,原油,断代生标,轻烃,咸水湖相源岩,淡水湖沼相源岩,柴达木盆地

Full-Text   Cite this paper   Add to My Lib

Abstract:

在系统分析柴达木盆地北缘和西部各油田60余个原油样品轻烃、饱和烃和芳烃组成的基础上,全面揭示了两地区原油的标志性地球化学特征;并结合源岩分析资料,应用断代生物标志物建立了识别原油源岩时代的标志。研究结果表明,北缘各油田原油Mango轻烃参数K_1值波动在1.1上下,富含甲基环已烷和甲苯;正烷烃呈奇偶优势分布,姥鲛烷优势显著;反映侏罗系淡水湖沼相沉积有机质特征。西部原油K_1值大多在1.2以上,轻烃中富含异构支链化合物;正烷烃系列呈奇碳优势(C_(11)~C(17))和偶碳优势(C_(18)~C_(28))双重分布模式,强植烷优势;C_(28)甾烷相对含量高(>30%);脱羟基维生素E系列化合物丰富,5,7,8-三甲基-/8-甲基-MTTC比值大都低于10;表征古近系―新近系咸水湖相有机质性质。奥利烷和C_(26)降胆甾烷是区分侏罗系和古近系―新近系油源油的有效断代生物标志物。侏罗系原油无奥利烷,24-/(24-+27-)降胆甾烷比值小于0.25;古近系―新近系原油含有奥利烷,24-/(24-+27-)降胆甾烷比值高于0.6。

References

[1]  黄杏珍,邵宏舜,顾树松.1993.柴达木盆地的油气形成与寻找油气田方向.兰州:甘肃科学出版社.
[2]  王培荣,朱俊章,方孝林,赵红,朱翠山.1998.一种新的原油轻烃分类法--塔里木盆地原油分类及其地化特征.石油学报,19(1):24~28.
[3]  Barker C E, et al. 1994. Calculation of vitrinite reflectance from thermal histories and peak temperatures. In: Mukhopadhyay P K, Dow W G, ed. Vitrinite Reflectance as a Maturity Parameter American Chemical Society, Washington, D. C. 216~222.
[4]  Fowler M G, et al. 1986. Monocyclic alkanes in Ordovician organic matter. Organic Geochemistry, 10: 815~823.
[5]  Granthan P J, Wakefield L L. 1988. Variations in the sterane carbon number distributions of marine source rock derived crude oils through geological time. Organic Geochemistry, 12: 61~ 73.
[6]  Hanson A D, Ritts B D, Zinniker D, Moldowan J M, Biffi U. 2001.Upper Oligocene lacustrine source rocks and petroleum systems of the northern Qaidam basin, northwest China. AAPG Bulletin, 85(4): 601~619.
[7]  Li Benliang, Wang Mingming, Wei Guoqi, et al. 2003. Lateral migration and accumulation of biogenic gas in the Sanhu area, Qaidam basin. Geological Review, 49 (1): 93 ~ 100 (in Chinese with English abstract).
[8]  Mango F D. 1990. The origin of light hydrocarbons in petroleum: A kinetic test of the steady-state catalytic hypothesis. Geochimica et Cosmochimica Acta, 54: 1315~1323.
[9]  Ritts B D, Hanson A D, Zinniker D, Moldowan J M. 1999. LowerMiddle Jurassic nonmarine source rocks and petroleum systems of the northern Qaidam Basin, northwest China. AAPG Bulletin,83(12): 1980~2005.
[10]  Sinninghe D J S, et al. 1987. The identification of mono-, di- and trimethyl 2-methyl-2 (4, 8, 12-trimethylridecyl) chromans and their occurrence in the geosphere. Geochimica et Cosmochimica Acta, 5(9): 2393~2400.
[11]  Ten Haven H L. 1996. Application and limitation of Mango\'s light hydrocarbon parameters in petroleum correlation studies. Organic Geochemistry, 24(10~11): 957~976.
[12]  Wang Peirong, et al. 1998. A new classification of crude oils on light hydrocarbons-The classification and geochemical feature of crude oils from Tarim basin. Acta Petrolei Sinica, 19(1): 24~28 (in Chinese with English abstract).
[13]  Zhang Xiaobao, Xu Ziyuan, Duan Yi, et al. 2003. Metabolic pathway of the Quaternary biogenetic gases and their migration and accumulation in the Qaidam basin, China. Geological Review, 49(2):168~174 (in Chinese with English abstract).
[14]  Zhu Yangming, Zhang Chunming. 1999. Application of Mango\'s light hydrocarbon parameters in classification of oils from Tarim BasinGeochimica, 28(1): 26~33 (in Chinese with English abstract).
[15]  程克明,等.1999.中国北方侏罗系烃源岩综合评价研究.内部报告.
[16]  李本亮,王明明,魏国齐,张道伟,王金鹏.2003.柴达木盆地三湖地区生物气横向运聚成藏研究.地质论评,49(1):93~100.
[17]  张晓宝,徐自远,段毅,马立元,孟自芳,周世新,贺鹏.2003.柴达木盆地东部第四系生物气的形成途径与运聚方式.地质论评,49(2):168~174.
[18]  朱扬明,张春明.1999.Mango轻烃参数在塔里木原油分类中的应用.地球化学,28(1):26~33.
[19]  Ekweozor C M, Udo O T. 1988. The oleananes: origin, maturation and limits of occurrence in Southern Nigeria sedimentary basins.Organic Geochemistry, 13: 131~140.
[20]  Grimalt J, Albaiges J. 1987. Source and occurrence of C12~C22 n-alkane distributions with even carbon-number preference in sedimentary environments. Geochimica et Cosmochimica Acta,51: 1379~1384.
[21]  Holba A G, DzOu L I P, Masterson W D, et al. 1998. Application of 24-norcholestanes, age-sensitive molecular fossils. Organic Geochemistry, 29: 1269 ~ 1283.
[22]  Mango F D. 1987. An invariance in the isoheptances of petroleum. Science, 237: 414~417.
[23]  Mango F D. 1997. The light hydrocarbons in petroleum: a critical review. Organic Geochemistry, 26(7/8): 417~440.
[24]  Shimoyama A, Johns W D. 1972. Formation of alkanes from fatty acids in the presence of CaCO3. Geochimica et Cosmochimica Acta, 36: 87~91.
[25]  Welte D H, Waples D. 1973. Uber die bevorzugung geradzahliger nalkane in sedimentgesteinen. Naturwissenschaften, 60:516 ~517.
[26]  Zhang Xiaobao, Hu Yong, Duan Yi, et al. 2003. Geochemical characteristics and origin of natural gases in the Qaidam basin,China. Acta Geologica Sinica, 77(1): 103~115.
[27]  黄第藩,等.1987.柴达木盆地西部第三系油源岩的地球化学和生油评价.内部报告.

Full-Text

Contact Us

service@oalib.com

QQ:3279437679

WhatsApp +8615387084133