正构烷烃分布模式判断柴西主力烃源岩

宋振响; 周世新; 穆亚蓬; 陈昭

doi:10.11781/sysydz201102182

正构烷烃分布模式判断柴西主力烃源岩

doi: 10.11781/sysydz201102182

1.
中国石油化工股份有限公司, 石油勘探开发研究院, 无锡石油地质研究所, 江苏, 无锡, 214151
2. 中国科学院, 地质与地球物理研究所, 气体地球化学重点实验室, 兰州, 730000
3. 河南省有色金属地质矿产局, 第二地质大队, 郑州, 450016

基金项目: 国家自然科学基金项目(40572088);中国科学院知识创新工程重要方向项目(KZCX2-YW-Q05-03-05)

详细信息

作者简介:
宋振响(1983- ),男,硕士,主要从事油气地球化学研究.E-mail:szhx0606@163.com.

中图分类号: TE122.1⁺13
计量
- 文章访问数: 3283
- HTML全文浏览量: 91
- PDF下载量: 914
- 被引次数: 0
出版历程
- 收稿日期: 2010-04-26
- 修回日期: 2011-02-09
- 刊出日期: 2011-04-28

Identification of chief hydrocarbon source rocks based on n-alkane distribution patterns in western Qaidam Basin

1.
Wuxi Research Institute of Petroleum Geology, SINOPEC, Wuxi, Jiangsu 214151, China
2. Key Laboratory of Gas Geochemistry, Institute of Geology and Geophysics, Chinese Academy of Sciences, Lanzhou, Gansu 730000, China
3. No. 2 Geological Party, He'nan Bureau of Geological Survey for Nonferrous Metals, Zhengzhou, He'nan 450016, China

摘要

摘要: 柴西原油正构烷烃分布多呈偶奇优势(CPI<1),而烃源岩样品则多呈奇偶优势分布,只有少数呈偶奇优势分布。从正构烷烃分布模式出发,结合单体烃碳同位素分析,对柴西原油和烃源岩进行对比,以确定柴西原油形成的主力烃源岩。研究表明,柴西深层主力烃源层为E₂₃,次要烃源层为E₁₊₂和N₃₁;浅层主力烃源层为N₁,次要烃源层为N₂。从生烃性能角度看,正构烷烃分布呈偶奇优势的烃源岩样品,其有机碳、氯仿沥青"A"、总烃含量、转化系数等都比呈奇偶优势分布的样品高,生烃性能较好,应为柴西主力烃源岩。
- 偶奇优势 /
- 单体烃碳同位素 /
- 正构烷烃 /
- 烃源岩 /
- 第三系 /
- 柴达木盆地西部
Abstract: The n-alkane distribution of crude oils from the western Qaidam Basin is characterized by even-to-odd (C₁₈—C₂₈) predominance. Source rocks from the region are mainly characterized by odd-to-even predominance. Based on n-alkane distribution pattern, combined with single molecule carbon isotope analysis, comparing crude oil with source rock, it was discussed in this paper the main source rocks in the western Qaidam Basin. The correlation of n-alkane distribution and single molecule carbon isotope analysis illustrated that the chief hydrocarbon source layer was E₂₃ and the secondary layers were E₁₊₂ and N₃₁ in deep region. Meanwhile, the chief hydrocarbon source layer was N₁ and the secondary layer was N₂ in shallow region. Hydrocarbon potential analysis showed that those samples with even-to-odd (C₁₈—C₂₈) predominance possessed higher TOC, bitumen "A", total hydrocarbon content and conversion ratio, displaying huge hydrocarbon generating potential.
- even-to-odd predominance /
- single molecule carbon isotope /
- n-alkane /
- hydrocarbon source rocks /
- Tertiary /
- western Qaidam Basin

HTML全文

参考文献(25)

[1]	黄杏珍,邵宏舜,顾树松,等.柴达木盆地的油气形成与寻找油气田方向[M].兰州:甘肃科学技术出版社,1993:6-7,247-249.
[2]	袁剑英,陈启林,陈迎宾,等.柴达木盆地油气地质特征与有利勘探领域[J].天然气地球科学,2006,17(5):640-644.
[3]	林腊梅,金强.柴达木盆地北缘和西部主力烃源岩的生烃史[J].石油与天然气地质,2004,25(6):677-681.
[4]	Zhang Chunming,Zhang Yuqing,Zhang Min,et al.Compositional variabilities among crude oils from the southwestern part of the Qaidam Basin,NW China[J].Journal of Petroleum Science and Engineering,2008,62(3-4):87-92.
[5]	朱扬明,苏爱国,梁狄刚,等.柴达木盆地西部第三系咸水湖相原油地球化学特征[J].地质科学,2004,39(4):475-485.
[6]	王力,金强.柴达木盆地西部第三系烃源灶及其对油气聚集的控制作用[J].石油与天然气地质,2005,26(4):467-472.
[7]	妥进才,邵宏舜,黄杏珍.盐湖相生油岩中某些地球化学参数与沉积环境的关系[J].沉积学报,1994,12(3):114-119.
[8]	何国源,谭彦虎,关平,等.柴达木盆地西部北区第三系油源研究[J].天然气地球科学,2008,19(4):509-518.
[9]	李洪波,张敏,张春明.柴达木盆地西部南区第三系烃源岩评价[J].石油天然气学报,2006,28(6):41-43.
[10]	Tissot B,Pelet R,Roucache J,et al.Alkanes as geochemical fossils indicators of geological environment[C]//Campos R,Goni J,eds.Advances in organic geochemistry 1975.Madrid:Enadimsa,1977:117-154.
[11]	傅家谟,盛国英.中国陆相原油的成因和生物标志物组成特征[J].沉积学报,1991,90(增刊):1-7.
[12]	李美俊,王延山,王铁玲,等.辽河盆地东部凹陷原油的碳同位素组成特征[J].现代地质,2003,17(2):217-221.
[13]	朱扬明,苏爱国,梁狄刚,等.柴达木盆地咸湖相生油岩正构烷烃分布特征及其成因[J].地球化学,2003,32(2):117-123.
[14]	Zhu Yangming,Weng Huanxin,Su Aiguo,et al.Geochemical characteristics of Tertiary saline lacustrine oils in the Western Qaidam Basin.Northwest China[J].Applied Geochemistry,2005,20(10):1875-1889.
[15]	包建平,朱翠山,汪立群.柴达木盆地西部原油地球化学特征对比[J].石油与天然气地质,2010,31(3):353-359.
[16]	段毅,张辉,吴保祥,等.柴达木盆地原油单体正构烷烃碳同位素研究[J].矿物岩石,2003,23(4):91-94.
[17]	朱扬明,苏爱国,梁狄刚,等.柴达木盆地原油地球化学特征及其源岩时代判识[J].地质学报,2003,77(2):272-279.
[18]	Hanson A D.Ritts B D,Zinniker D,et al.Upper Oligocene lacustrine source rocks and petroleum systems of the northern Qaidam basin,northwest China[J].AAPG Bulletin,2001,85(4):601-619.
[19]	段毅,王智平,张辉,等.柴达木盆地原油烃类地球化学特征[J].石油实验地质,2004,26(4):359-364.
[20]	刘金萍,耿安松,熊永强,等.正构烷烃单体碳、氢同位素在油源对比中的应用[J].新疆石油地质,2007,28(1):104-107.
[21]	段毅,张辉,郑朝阳,等.柴达木盆地原油成因研究[J].沉积学报,2004,22(增刊):61-65.
[22]	刘洛夫,妥进才,陈践发.烃源岩的研究现状[J].勘探家,1997,2(3):62-64.
[23]	彭得华.柴达木盆地西部第三系咸化湖泊烃源岩地质地球化学特征与生烃机理[D].广州;中国科学院广州地球化学研究所,2004.
[24]	金强,查明,赵磊.柴达木盆地西部第三系盐湖相有效生油岩的识别[J].沉积学报,2001,19(1):125-129.
[25]	金强,查明.柴达木盆地西部第三系蒸发岩与生油岩共生沉积作用研究[J].地质科学,2000,35(4):465-473.