CAJ | 학술논문

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 Tmax 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1.29~4.26 mL/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。
통과대중국남방고생계상양자화하양자지구적혈암갑완흡부량、유궤질봉도、광물조성화 Tmax 등적분석，연구료총유궤탄(TOC)함량、점토광물조성화유궤질성숙도여혈암갑완흡부량적상관성。결과현시：(1)중국남방고생계혈암양품갑완흡부량재1.29~4.26 mL/g지간，변화교대，단다수양품흡부량재2.5~3.0 mL/g지간；(2)니혈암적 TOC 여갑완흡부량구유정상관관계，현시유궤질급기함량시공제혈암흡부적주요인소；단재고과성숙계단，수성숙도적승고，혈암적갑완흡부량유하강적추세；(3)점토광물함량여혈암흡부량몰유상관관계，진관개별점토광물여몽탈석현시료일정적흡부능력。
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 Tmax 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 Tmax 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.