期刊
ADVANCES IN WATER RESOURCES
卷 73, 期 -, 页码 65-73出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.advwatres.2014.07.002
关键词
Convective mixing; Anisotropy; Heterogeneity; CO2 sequestration
资金
- Australian National Low Emissions Coal Research and Development (ANLEC RD)
- Australian Coal Association Low Emissions Technology Limited
- Australian Government through the Clean Energy Initiative
Enhanced dissolution of CO2 into a saline aquifer due to convective mixing is an important physical process for the secure long-term storage of significant quantities of CO2. Numerical simulations have previously shown that the dissolution rate of CO2 into reservoir brine will stabilise after a certain time period, with only small oscillations about a long-term average. A theoretical estimate for this average long-term mass flux in an isotropic homogeneous reservoir has previously appeared in the literature. In this paper, an estimate for the steady dissolution rate in anisotropic homogenous porous media is developed using a simple theoretical argument. Detailed numerical simulations confirm that the steady dissolution rate scales as (k(v)k(h))(1/2) in an anisotropic homogeneous porous media, where k(v) and k(h) are the vertical and horizontal permeabilities, respectively. The scaling is also shown to be appropriate for heterogeneous models where vertical heterogeneity is introduced by including a random distribution of impermeable barriers. Crown Copyright (C) 2014 Published by Elsevier Ltd. All rights reserved.
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