气候变化领域集成服务门户(CCPortal): Permeability Hysteresis From Microchannels Opening During Dissolution/Reprecipitation Cycle

CCPortal

DOI	10.1029/2020GL088674
	Permeability Hysteresis From Microchannels Opening During Dissolution/Reprecipitation Cycle
	Lesueur M.; Poulet T.; Veveakis M.
发表日期	2020
ISSN	0094-8276
卷号	47 期号:18
英文摘要	Permeability is a critical parameter for geological resources characterization. Its evolution with respect to porosity is particularly interesting and many research initiatives focus on deriving such relationships, to understand some hydraulic impacts of microstructure alteration. Permeability evolution from chemical reactions, for instance, can become complex as flow channels may open during rock dissolution. In this contribution, we show that this phenomenon can lead to irregular porosity-permeability curves and permeability hysteresis after reprecipitation. Current approaches describing permeability as a simple function of porosity can therefore not capture this behavior, and we advocate instead the use of dynamic modeling for such scenarios. We demonstrate our approach by modeling a dissolution/precipitation cycle for a unit cell pore channel and quantify the process at larger scale on three different rock samples, whose microstructures are reconstructed from segmented micro-Computerised Tomography scans. ©2020. American Geophysical Union. All Rights Reserved.
英文关键词	Computerized tomography; Hysteresis; Microstructure; Porosity; Dissolution/precipitation; Flow channels; Hydraulic impacts; Microstructure alteration; Permeability evolution; Re-precipitation; Research initiatives; Rock dissolution; Dissolution; channel morphology; dissolution; hysteresis; microstructure; permeability; porosity; rock mechanics
语种	英语
来源期刊	Geophysical Research Letters
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/169720
作者单位	Civil and Environmental Engineering, Duke University, Durham, NC, United States; Energy Geosciences Division, Lawrence Berkeley National Laboratory, Berkeley, CA, United States; CSIRO Mineral Resources, Kensington, WA, Australia
推荐引用方式 GB/T 7714	Lesueur M.,Poulet T.,Veveakis M.. Permeability Hysteresis From Microchannels Opening During Dissolution/Reprecipitation Cycle[J],2020,47(18).
APA	Lesueur M.,Poulet T.,&Veveakis M..(2020).Permeability Hysteresis From Microchannels Opening During Dissolution/Reprecipitation Cycle.Geophysical Research Letters,47(18).
MLA	Lesueur M.,et al."Permeability Hysteresis From Microchannels Opening During Dissolution/Reprecipitation Cycle".Geophysical Research Letters 47.18(2020).