我国主要含煤油气盆地煤系源岩PY-GC热解产物组成及意义 |
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引用本文: | 孙永革,盛国英.我国主要含煤油气盆地煤系源岩PY-GC热解产物组成及意义[J].沉积学报,1995,13(2):120-127. |
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作者姓名: | 孙永革 盛国英 |
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作者单位: | 中国科学院广州地球化学研究所 广州 510640 |
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基金项目: | “八五”国家重点科技攻关项目 |
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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。
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关 键 词: | 煤系源岩 PY-GC 母质类型 煤成烃 |
收稿时间: | 1994-10-15 |
Pyrolysate Compositions of Source Beds from Major Chinese Coal-bearing Petroliferous Basins and Their Geochemical Significance |
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Institution: | Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640 |
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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. |
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