石油与天然气地质 ›› 2002, Vol. 23 ›› Issue (3): 212-217.doi: 10.11743/ogg20020303

• 前沿探索 • 上一篇    下一篇

鄂尔多斯中部气田下古生界水溶气成因

李贤庆1,2, 侯读杰2, 胡国艺3, 张爱云4, 柳常青2   

  1. 1. 中国科学院广州地球化学研究所有机地球化学国家重点实验室, 广东广州, 510640;
    2. 江汉石油学院分析测试研究中心, 湖北荆州, 434102;
    3. 中国石油勘探开发科学研究院廊坊分院, 河北廊坊, 065007;
    4. 中国地质大学能源地质系, 北京, 100083
  • 收稿日期:2002-01-09 出版日期:2002-09-25 发布日期:2012-01-16
  • 基金项目:

    国家“九五”重点科技攻关项目 (99-110-01-03-02)的成果之一

ORIGIN OF LOWER PALEOZOIC DISSOLVED GASES IN CENTRAL GAS FIELD OF ORDOS

Li Xianqing1,2, Hou Dujie2, Hu Guoyi3, Zhang Aiyun4, Liu Changqing2   

  1. 1. Guangzhou Institute of Geochemistry, the Chinese Academy of Sciences, Guangzhou;
    2. Jianghan Petroleum Institute, Jingzhou, Hubei;
    3. Langfang Branch, Research Institute of Petroleum Exploration and Development, Langfang, Hebei;
    4. Department of Energy Source-Geology, China University of Geosciences, Beijing
  • Received:2002-01-09 Online:2002-09-25 Published:2012-01-16

PDF (PC)

622

被引次数

31

摘要：

鄂尔多斯中部气田下古生界水溶气以高甲烷含量为特征,含有少量重烃和非烃组分,基本显示出高成熟过成熟的干气特征 (C1/C1～5>0.95)。该区下古生界水溶气组成存在“东、西差异”(东部区块水溶气的C2+重烃、苯和甲苯含量较高,而西部区块水溶气的C2+ 重烃、苯和甲苯含量低或缺失),揭示了东部、西部区块水溶气的来源是不同的。东部区块水溶气具有上古生界煤成气和下古生界油型气的混合贡献,西部区块水溶气主要来自下古生界的油型气。

关键词: 下古生界, 水溶气, 煤成气, 油型气, 鄂尔多斯

Abstract:

Characterized by higher contents of methane, the lower Paleozoic dissolved gases in central gas field in Erdos have a little amount of heavy hydrocarbon and non- hydrocarbon compositions basically indicating a dry gas feature of high-over maturation(C1/C1-5>0.95). Differences between "East block & West block" in compositions of the lower Paleozoic dissolved gases(high contents of heavy hydrocarbon C2+,benzene,toluene in compositions of dissolved gas in the east block while in the west block above compositions are either very low or absent) reveal that east and west block dissolved gases come from different sources. Dissolved gases from the east block are combinations of coal-formed gas in the upper Paleozoic and oil-type gas in the lower Paleozoic, whereas dissolved gases from the west block mainly come from oil-type gas in the lower Paleozoic.

Key words: lower Paleozoic, dissolved gas, Coal-formed gas, Oil-type gas, Ordos

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