期刊
INTERNATIONAL JOURNAL OF COAL GEOLOGY
卷 203, 期 -, 页码 28-35出版社
ELSEVIER
DOI: 10.1016/j.coal.2019.01.002
关键词
microCT; ECBM; Carbon storge; Dissolution; Acidizing
资金
- Australian Government
- Government of Western Australia
Carbon dioxide geosequestration into deep unmineable coal seams is a technique which can mitigate anthropogenic greenhouse gas emissions. However, coal composition is always complex, and some minerals such as calcite chemically react when exposed to the acidic environment (which is created by scCO(2) mixing with formation water). These reactive transport processes are still poorly understood. We thus imaged a water-bearing heterogeneous coal (calcite rich) core before and after scCO(2) injection in-situ at high resolution (3.43 mu m) in 3D via X-ray micro-tomography. Indeed, the calcite- fusinite mix phase was partially dissolved, and absolute porosity and connectivity significantly increased. We thus suggest that such a process could be used as an acidizing method for enhanced coal bed methane (ECBM) production, thus significantly improving the permeability performance, CO2 injectivity and the associated methane permeability.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据