地质学报2013，Vol.87Issue(7)：1041-1048,8.
扬子地台寒武系泥页岩甲烷吸附特征
The Methane Adsorption Features of Cambrian Shales in the Yangtze Platform
摘要
Abstract
The methane sorption capacities of Cambrian shales from the Huangbailing,Mufushan and Niutitang formtions and their controlling factors have been investigated.The TOC contents of these shales vary from 1.08％ to 4.16 ％ and their clay mineral contents range from 36.7％ to 62.3％.The methane sorption capacities of these Cambrian shales display a positive correlation with their TOC contents and indicate that organic matter content is the primary factor of controlling the sorption capacities of these shales.On the other hand,there is no correlation between total clay mineral contents and the methane sorption capacities,while the shales with higher montmorillonite content appear to have relative higher methane sorption capacities.These imply that only individual clay mineral may have some sorption capacity in these Cambrian shales.The methane sorption capacities of these Cambrian shales also show regional variation among the samples from these three strata Formations of different region.The methane sorption capacities of Niutitang Formation shales from Zunyi and Mufushan formation shales from Nanjing are in the range of 2.76 ～ 5.30 mL/g and 1.36 ～ 4.35 mL/g,respectively; while the methane sorption capacity of Huangbailing Formation shales from Chizhou ranges from 1.63 to 2.72 mL/g.The relationship between TOC content and methane sorption capacity also show significant variation among these shales from different Formations and indicates that the methane sorption capacity of shales are not only controlled by the abundance and types of organic matter,but also affected by the thermal maturity of organic matter,regional geological evolution and as well as the sorption of clay minerals.关键词
页岩气/甲烷吸附量/有机碳含量/粘土矿/寒武系页岩Key words
shale gas/ the methane sorption capacity/ TOC content/ clay minerals/ Cambrian shales引用本文复制引用
宋叙,王思波,曹涛涛,宋之光..扬子地台寒武系泥页岩甲烷吸附特征[J].地质学报,2013,87(7):1041-1048,8.基金项目
本文为国家"973"项目04课题(编号2012CB214704)和国家自然科学基金项目(编号41273058)资助成果. （编号2012CB214704）
