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中国南方古生界页岩吸附特征及控制因素
Characterizing the methane sorption and its controlling factors in Paleozoic shales of south China

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王思波 1 *   宋之光 2   曹涛涛 2   夏嘉 2  
文摘 通过对中国南方古生界上扬子和下扬子地区的页岩甲烷吸附量、有机质丰度、矿物组成和T_(max)等的分析, 研究了总有机碳(TOC)含量、黏土矿物组成和有机质成熟度与页岩甲烷吸附量的相关性。结果显示:(1)中国南方古生界页岩样品甲烷吸附量在1.29~4.26mL/g 之间, 变化较大, 但多数样品吸附量在2.5~3.0 mL/g之间; (2)泥页岩的TOC 与甲烷吸附量具有正相关关系, 显示有机质及其含量是控制页岩吸附的主要因素;但在高过成熟阶段, 随成熟度的升高, 页岩的甲烷吸附量有下降的趋势; (3)黏土矿物含量与页岩吸附量没有相关关系, 尽管个别黏土矿物如蒙脱石显示了一定的吸附能力。
其他语种文摘 The methane sorption capacities of Paleozoic shales in the Upper and Lower Yangtze platform region in south China and their correlation with the TOC content, mineral composition and T_(max) were investigated. The primary results suggest: (1) the methane sorption capacities of the Paleozoic shales in south China are in a broad range of 1.29–4.26 mL/g with most methane sorption capacities of the samples are mainly in the range of 2.5–3.0 mL/g, however, the methane sorption isotherms are somewhat different; (2) there is a general positive correlation between the TOC content and methane sorption capacity and indicates that organic matter and its content is the controlling factor of shale sorption; it is also worthwhile to point out that a declination in the methane sorption capacity of shales is observed as the T_(max) increased for the high and over matured shales; (3) there is no correlation between clay mineral content and methane sorption capacity, although there is a weak positive correlation between montmorillonite content and methane sorption capacity.
来源 地球化学 ,2014,43(5):429-436 【核心库】
关键词 甲烷吸附量 ; 总有机碳 ; 有机质成熟度 ; 黏土矿物 ; 南方古生界页岩
地址

1. 中国科学院南海海洋研究所, 中国科学院边缘海地质重点实验室;;有机地球化学国家重点实验室, 广东, 广州, 510301  

2. 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

语种 中文
文献类型 研究性论文
ISSN 0379-1726
学科 地质学
基金 国家重大科技专项 ;  国家自然科学基金
文献收藏号 CSCD:5268917

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