DOI: 10.5194/hess-23-2207-2019
论文题名: Reactive transport with wellbore storages in a single-well push-pull test
作者: Wang Q. ; Zhan H.
刊名: Hydrology and Earth System Sciences
ISSN: 1027-5606
出版年: 2019
卷: 23, 期: 4 起始页码: 2207
结束页码: 2223
语种: 英语
Scopus关键词: Aquifers
; Diffusion
; Digital storage
; Extraction
; Groundwater flow
; Groundwater resources
; Nonlinear analysis
; Oil field equipment
; Reaction kinetics
; Sensitivity analysis
; Solute transport
; Biogeochemical reactions
; Break through curve
; Hydraulic diffusivity
; Nonlinear functions
; Nonlinear reaction
; Piece-wise linear functions
; Reaction parameters
; Single-well push-pull test
; Boreholes
; aquifer
; diffusivity
; extraction method
; groundwater flow
; hydraulic conductivity
; reaction kinetics
; reactive transport
; solute transport
; testing method
; water storage
英文摘要: Using the single-well push-pull (SWPP) test to determine the in situ biogeochemical reaction kinetics, a chase phase and a rest phase were recommended to increase the duration of reaction, besides the injection and extraction phases. In this study, we presented multi-species reactive models of the four-phase SWPP test considering the wellbore storages for both groundwater flow and solute transport and a finite aquifer hydraulic diffusivity, which were ignored in previous studies. The models of the wellbore storage for solute transport were proposed based on the mass balance, and the sensitivity analysis and uniqueness analysis were employed to investigate the assumptions used in previous studies on the parameter estimation. The results showed that ignoring it might produce great errors in the SWPP test. In the injection and chase phases, the influence of the wellbore storage increased with the decreasing aquifer hydraulic diffusivity. The peak values of the breakthrough curves (BTCs) increased with the increasing aquifer hydraulic diffusivity in the extraction phase, and the arrival time of the peak value became shorter with a greater aquifer hydraulic diffusivity. Meanwhile, the Robin condition performed well at the rest phase only when the chase concentration was zero and the solute in the injection phase was completely flushed out of the borehole into the aquifer. The Danckwerts condition was better than the Robin condition even when the chase concentration was not zero. The reaction parameters could be determined by directly best fitting the observed data when the nonlinear reactions were described by piece-wise linear functions, while such an approach might not work if one attempted to use nonlinear functions to describe such nonlinear reactions. The field application demonstrated that the new model of this study performed well in interpreting BTCs of a SWPP test. © 2019 Author(s). Citation statistics:
资源类型: 期刊论文
标识符: http://119.78.100.158/handle/2HF3EXSE/162979
Appears in Collections: 气候变化与战略
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作者单位: Wang, Q., Laboratory of Basin Hydrology and Wetland Eco-restoration, China University of Geosciences, Wuhan, Hubei, 430074, China, School of Environmental Studies, China University of Geosciences, Wuhan, Hubei, 430074, China, Department of Geology and Geophysics, Texas A and M University, College Station, TX 77843-3115, United States; Zhan, H., School of Environmental Studies, China University of Geosciences, Wuhan, Hubei, 430074, China, Department of Geology and Geophysics, Texas A and M University, College Station, TX 77843-3115, United States
Recommended Citation:
Wang Q.,Zhan H.. Reactive transport with wellbore storages in a single-well push-pull test[J]. Hydrology and Earth System Sciences,2019-01-01,23(4)