Pyrolysate Compositions of Source Beds from Major Chinese Coal-bearing Petroliferous Basins and Their Geochemical Significance
-
摘要: 本文运用热解气相色谱（ＰＹ－ＧＣ）技术探讨了我国一些含煤油气盆地中煤系源岩热解产物的组成特征及意义。研究表明，不同盆地煤系源岩热解产物的差异主要表现在Ｃ+5正构烷烃＋正构烯烃含量和芳环化合物的组成上，利用热解产物Ｃ1—Ｃ5、Ｃ6—Ｃ14正构烷烃＋正构烯烃和Ｃ+15正构烷烃＋正构烯烃三个端元组分的相对含量可有效地判识煤系地层源岩有机质的产烃类型，研究表明ＰＹ－ＧＣ技术是一种值得推广的煤成烃评价方法。Abstract: In this paper, source rocks from major Chinese coal-bearing petroliferous basins were studied by Pyrolysis-Gas Chromatography (PY-GC) technique, and compositional characters of pyrolysates and their significance were discussed in detail. Differences in pyrolysate compositions of different coal-bearing source rocks are principally reflected upon the abstract amounts of C+5 n-alkanes and n-alkenes, as well as upon the constitutinn of aromatic compounds. We selected C1-C5, C6-C14 and C+15 n-alkanes and n-alkenes as three terminal represents of pyrolysate composition, and their relative amounts could be effectivelly employed to distinct types and features of hydrocarbon generation in coal-bearing source rocks.All the results show that PY-GC technique is an effective approach for coal-generated hydrocarbon evaluation, and this technique is worthy of widespread application.
-
[1] 1.刘德汉、傅家漠、史习慧、秦建中，1985，苏桥地区残植煤的发现—兼论煤成气、煤成油的判识和我国煤成油的前景，地球化学，(4):314-322。
2.Horsfield B.，1984, Pyrolysis studies and petroleum exploration. In; Advances in Petroleum Geochemistry (Eds. By Brooks J. and Welte D.)，1:247一292, Academic Press, London.
3.Horsfield B.，1989, Practical criteria for classifying kerogen: some observations from pyrolysis一gas chromatography. Geochim. Cosmochim. Acta.，53:891一901.
4.Larter S. R. and Douglas A. G.，1982. Pyrolysis methods in organic geochemistry一an overviews. J. Anal. Appl. Py-rolysis. 4:1一19.
5.Larter S. R.，1984, Application of analytical pyrolysis techniques to kerogen characterization and fossil fuel exploration/ exploitation. In: Analytical Pyrolysis一Methods and Applications (Edited by Voorhees K). 212一272, Butterworth,London.
6.Larter S. R. and Horsfield B.，1990, Determination of structural components of kerogens using analytical pyrolysis methods. In: Organic Geochemistry (Edited by Engel M. H. and Macko S. A.)，Plenum Press, New York.
7.Senftle J. T.，Larter S. R.，Brownly B. W. and Brown ]. H.，1986, Quantitative chemical characterization of vitrinite concentrates on pyrolysis一gas chromatography rank variation of pyrolysis products. Org. Geochem.，9(345一350). -
点击查看大图
计量
- 文章访问数: 609
- HTML全文浏览量: 22
- PDF下载量: 489
- 被引次数: 0
下载:
