Influence of Black Shale Composition on Methane Adsorption and Gas Content: Implications For Gas Storage in the Longmaxi Black Shal

被引：3

作者：

Zhu, Haihua ^{[1
,2
,3
]}

Zhang, Tingshan ^{[1
,2
]}

Lang, Jun ^{[1
,2
]}

Zeng, Jianli ^{[1
,2
]}

Liang, Xing ^{[4
]}

He, Yong ^{[4
]}

Wang, Gaocheng ^{[4
]}

Li, Junjun ^{[4
]}

机构：

[1] Stake Key Lab Oil & Gas Reservoir Geol & Exploita, Chengdu, Sichuan, Peoples R China

[2] Southwest Petr Univ, Sch Geosci & Technol, Chengdu, Sichuan, Peoples R China

[3] Southwest Petr Univ, Unconvent Oil & Gas Assessment Ctr, Chengdu, Sichuan, Peoples R China

[4] Zhejiang Oil Field Co, PetroChina, Hangzhou, Zhejiang, Peoples R China

来源：

EARTH SCIENCES RESEARCH JOURNAL | 2018年 / 22卷 / 01期

基金：

中国国家自然科学基金; 中国博士后科学基金;

关键词：

Shale; Methane; Adsorption; TOC; Sichuan; NORTHEASTERN BRITISH-COLUMBIA; SICHUAN BASIN; CANADA; CHINA;

D O I：

10.15446/esrj.v22n1.70539

中图分类号：

P [天文学、地球科学];

学科分类号：

07 ;

摘要：

The influence of shale composition on methane adsorption capability and gas content is investigated using 14 samples from Well YS8 in the southern Sichuan Basin, China. The results show that the Langmuir adsorption capacity of the Longmaxi shale is mainly a function of the total organic carbon (TOC) content. When TOC is similar to 1.1%, 50% CH4 is adsorbed onto the surface of the organic matter. The mineral content has limited control on the adsorption capacity of the Longmaxi shales. Organic matter is also a major control on gas content when TOC content is <1.0%. When TOC is >1.0%, gas content remains constant, indicating that gas preservation is more important than gas generation and rock adsorption capacity. Scatter plots of TOC versus gas content and, Langmuir adsorption capacity shows that when TOC is <2.0%, CH4 occurs both as free and absorbed gas, and CH4 occurs mainly as absorbed gas when TOC is >2.0%.

引用

页码：59 / 63

页数：5

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