Pore Network Modeling of Reactive Transport and Dissolution in Porous Media

被引:0
作者
Joseph Tansey
Matthew T. Balhoff
机构
[1] University of Texas at Austin,Department of Petroleum and Geosystems Engineering
来源
Transport in Porous Media | 2016年 / 113卷
关键词
Matrix acidization; Dissolution; Porous media; Sphere packs; Pore network model; Pore scale; Carbonate;
D O I
暂无
中图分类号
学科分类号
摘要
Dissolution of solid grains in a porous medium is important in many applications, such as groundwater transport, carbon storage, mineral systems, formation of geologic features, and enhancement of near-wellbore permeability in carbonate reservoirs. Many models for dissolution in porous media are continuum-scale descriptions, but the flow, reactive transport, and subsequent increase in porosity and permeability occur at the pore scale. Thus, proper inclusion of parametric inputs is challenging. We present a single-phase, 3D, pore network model of dissolution for porous media in the mass-transfer-limited regime. A novel mass transfer coefficient correlation and pore-merging criterion are developed from finite element simulations that greatly improve the pore-scale physics and the quantitative accuracy of the network. The optimal Damköhler number determined from our network simulations closely matches the optimum of 0.29 reported experimentally for mass transfer dissolution in porous media.
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页码:303 / 327
页数:24
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