| 煤成烃生成及排驱加水热模拟实验 |
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| 引用本文： | 李荣西,金奎励.煤成烃生成及排驱加水热模拟实验[J].沉积学报,1998,16(1):98-102. |
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| 作者姓名： | 李荣西 金奎励 |
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| 作者单位： | 中国矿业大学北京校区 北京 100083 |
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| 基金项目： | 国家自然科学基金 49672131 |
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| 摘 要： | 用加水热模拟实验对采于我国胜利油田附近的石炭系太原组亮褐煤（R0＝0．56%）生烃潜力进行研究。煤样富含镜质组（74．5%），壳质组少（8．8%），惰性组占16．7%，其中镜质组以富氢的基质镜质体为主。煤样裂隙发育，形成于滨海沼泽相沉积环境。实验设200℃、230℃、260℃、290℃、320℃和350℃六个温度点，每个温度点加热72小时。实验结果表明该煤具有较高的生烃潜力和排油效率。其液态烃大量生成和排出始于R0＝0．76%（290℃），在R0＝1．18%（320℃）时达高峰。气态产物从R0＝1．18%大量形成，直到R0＝1．53%（350℃）继续增大。实验分析认为煤的生烃能力除了与其有机质类型、有机质丰度等有关外，还与其形成的沉积环境有关，缺氧的还原环境是煤作为烃源岩形成和保存的有利沉积环境。裂隙的发育有助于煤成油的排驱和运移。
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| 关 键 词： | 生烃潜力 排驱效率 加水热模拟实验 沉积环境 煤 |
| 收稿时间： | 1997-07-29 |
Simulation of the Hydrocarbon Generation and Expulsion of Coal by Hydrous Pyrolysis |
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| Li Rongxi, Jin Kuili.Simulation of the Hydrocarbon Generation and Expulsion of Coal by Hydrous Pyrolysis[J].Acta Sedimentologica Sinica,1998,16(1):98-102. |
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| Authors: | Li Rongxi Jin Kuili |
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| Institution: | Beijing Graduate School China University of Mining and Technology Beijing 100083 |
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| Abstract: | Hydrous pyrolysis experiment was carried out using Carboniferous bright brown coal(R°=0. 56%)nearShengli Oil-field , East China to evaluate the hydrocarbon generation potential of coal. The coal sample is vitri-nite-rich ( 74. 5%)and liptinite-poor ( 8. 8%)with inertinite of 16. 7%.Much of vitrinite in the sample con-sists of hydrogen-rich desmocollinite. The hydrous pyrolysis was performed at 200℃，230℃，260 ℃，290 ℃，320℃and 350`℃for 72 hours，respectively. Both total pyrolysates and expelled oil increased with temperaturebefore reaching their maximum yields at 320'C (R°=1. 18%)，and decreased afterwards. The gaseous prod-ucts increased sharply at 3200℃(R°=1. 18%)and tended to increasing evenly at their peak yield point of350'℃(R°=1. 53%).The results show that the coal has a higher hydrocarbon generation potential and expul-sion effeciency. It is proposed that the hydrocarbon potential of coals depends not only on their organic mat-ters but also on their depositional environments. Reducing conditions are favorable depositional environmentfor oil-prone coal. The fractures and cleats are beneficial to the expulsion of the oil from coal. |
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| Keywords: | generation potential expulsion efficiency hydrous pyrolysis depositional environment coal |
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