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[1]孙永革*,杨中威,Bernhard CRAMER.煤系有机质多阶段成气的分子碳同位素表征及其对高过成熟干酪根生气潜力评价的启示[J].地球化学,2013,42(02):97-102.
　SUN Yong-ge*,YANG Zhong-wei and Bernhard CRAMER.Multiple stages of gas generation from coal organic matter as revealed by molecular isotopic geochemistry and implications for gas generation potential assessment of highly to over mature kerogen[J].Geochimica,2013,42(02):97-102.
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煤系有机质多阶段成气的分子碳同位素表征及其对高过成熟干酪根生气潜力评价的启示

《地球化学》[ISSN:0379-1726/CN:44-1398/P] 卷: 第42卷 期数: 2013年02期 页码: 97-102 栏目: 地球化学 出版日期: 2013-03-30
Title:
Multiple stages of gas generation from coal organic matter as revealed by molecular isotopic geochemistry and implications for gas generation potential assessment of highly to over mature kerogen
文章编号:
0379-1726(2013)02-0097-06
作者:
孙永革1, 2*,  杨中威1, 4,  Bernhard CRAMER3
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.浙江大学 地球科学系, 浙江 杭州 310027; 3.Federal Institute for Geosciences and Natural Resources (BGR), Hannover 30655, Germany; 4.中国科学院大学, 北京 100049
Author(s):
SUN Yong-ge1, 2*,  YANG Zhong-wei1, 4 and Bernhard CRAMER3
1.State Key Laboratory of Organic Geochemistry, Guangzhou Institute of Geochemistry, Chinese Academy of Sciences, Guangzhou 510640, China; 2.Department of Earth Science, Zhejiang University, Hangzhou 310027, China; 3.Federal Institute for Geosciences an
关键词:
煤系有机质;  多阶段成烃;  碳同位素;  甲烷;  裂解气相色谱-同位素比值质谱
Keywords:
coal organic matter;  multiple stages of hydrocarbon generation;  stable carbon isotope composition;  methane;  pyrolysis gas chromatography isotope ratio mass spectrometer
分类号:
P593
文献标志码:
A
摘要:
采用开放体系在线程序升温裂解-色谱-碳同位素比值质谱技术(PY/GC-IRMS)考察了煤系有机质热演化过程中甲烷瞬时生成速率与碳同位素组成特征, 提出煤系有机质不同热演化进程甲烷生成的四个阶段: 生油窗阶段、主生气阶段、晚期生气阶段(芳环侧链断裂)、开环-缩聚作用阶段。以一级反应动力学为基础, 采用高斯分布算法, 计算了各阶段甲烷产出的动力学参数。研究结果对煤成气资源量的正确评价, 特别是近年来有机质高演化阶段成气潜力的评价具有重要指示意义。
Abstract:
This paper investigated instantaneous generation rate of methane and its stable carbon isotope composition during the course of thermal simulation by using open system, on-line pyrolysis gas chromatography mass spectrometer, to identify the reaction types for methane generation during thermal evolution.It revealed that hydrocarbon generation from coal organic matter could be characterized by 4 stages, i.e.oil window, main gas generation, late gas generation and cyclic cleavage-condensation.Using first-order reaction modeling and Gaussian distribution, kinetic parameters for methane generation were calculated and quantitatively evaluated.The results will have important implications for the evaluation of coal organic matter-derived gas reserve, especially for the gas generation potential assessment of highly to over mature source rocks.

参考文献/References:

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备注/Memo

收稿日期(Received): 2012-03-31; 改回日期(Revised): 2012-04-11; 接受日期(Accepted): 2012-04-23
基金项目: 国家自然科学基金(40972093); 提高石油采收率国家重点实验室基金和油气资源与探测国家重点实验室基金(2009001)
作者简介: 孙永革(1969-), 男, 教授、博士生导师, 有机地球化学专业。
* 通讯作者(Corresponding author): SUN Yong-ge, E-mail: ygsun@gig.ac.cn, Tel: +86-571-87951336

更新日期/Last Update: 2013-03-30