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You searched for: Author "Jens T. Birkholzer" Remove constraint Author: "Jens T. Birkholzer"
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1. Permeability Decline by Clay Fines Migration around a Low‐Salinity Fluid Injection Well

Author:
Jens T. Birkholzer,   et al.   ; Abdullah Cihan; Robin Petrusak; Pramod Bhuvankar; David Alumbaugh; Robert Trautz;     Show all 6 Authors
Source:
Ground water 2022 v.60 no.1 pp. 87-98
ISSN:
0017-467X
Subject:
clay; decline; groundwater; mathematical models; permeability; salinity; sandstone
Abstract:
... Migration of clay fines can be a concern when less saline fluids are injected into brine‐saturated sandstone formations containing clays. If the salinity near fluid injection wells decreases below a critical value, the clay fines near the injection may detach, start migrating, and finally clog the pores. This effect can cause permeability decline near the well and may rapidly reduce the well injec ...
DOI:
10.1111/gwat.13127

2. Diffusion‐to‐Imbibition Transition in Water Sorption in Nanoporous Media: Theoretical Studies

Author:
Jens T. Birkholzer,   et al.   ; Abdullah Cihan; Tetsu K. Tokunaga;     Show all 3 Authors
Source:
Water resources research 2021 v.57 no.6 pp. e2021WR029720
ISSN:
0043-1397
Subject:
adsorption; carbon sequestration; density functional theory; desorption; evolution; hydrophilicity; hysteresis; imbibition; liquids; nanopores; radioactive waste; relative humidity; research; silicon; theoretical models; vapors; waste disposal; water
Abstract:
... The ability to predict multiphase fluid transport in nanoporous rocks such as shales is critical for many geoscience applications, for example unconventional hydrocarbon production, geologic carbon sequestration, and nuclear waste disposal. When the pore sizes approach nanoscales, the impact of the molecular interaction forces between fluids and solids becomes increasingly important. These forces ...
DOI:
10.1029/2021WR029720

3. Adsorption and Capillary Condensation-Induced Imbibition in Nanoporous Media

Author:
Jens T. Birkholzer,   et al.   ; Abdullah Cihan; Tetsu K. Tokunaga;     Show all 3 Authors
Source:
Langmuir 2019 v.35 no.29 pp. 9611-9621
ISSN:
1520-5827
Subject:
adsorption; carbon sequestration; engineering; imbibition; immiscible displacement; mathematical models; nanopores; oils; porous media; radioactive waste; relative humidity; shale; waste disposal; water vapor
Abstract:
... Multiphase flow phenomena in nanoporous media are encountered in many science and engineering applications. Shales, for example, possessing complex nanopore networks, have considerable importance as source rocks for unconventional oil and gas production and as low-permeability seals for geologic carbon sequestration or nuclear waste disposal. This study presents a theoretical investigation of the ...
DOI:
10.1021/acs.langmuir.9b00813

4. Coupled THMC models for bentonite in an argillite repository for nuclear waste: Illitization and its effect on swelling stress under high temperature

Author:
Jens T. Birkholzer,   et al.   ; Liange Zheng; Jonny Rutqvist; Hao Xu;     Show all 4 Authors
Source:
Engineering geology 2017 v.230 pp. 118-129
ISSN:
0013-7952
Subject:
argillite; bentonite; decision making; engineering; hydrology; mechanical properties; mineral content; radioactive waste; simulation models; temperature
Abstract:
... Subsurface manipulations such as those expected from the disposal of heat-emanating radioactive waste in deep repositories can induce strongly coupled Thermal (T), hydrological (H), mechanical (M) and chemical (C) processes. Adequate coupled THMC models are highly desirable or even indispensable for performance assessment of such repositories, for examples for the analysis of bentonite-based engin ...
DOI:
10.1016/j.enggeo.2017.10.002

5. Extension of TOUGH-FLAC to the finite strain framework

Author:
Jens T. Birkholzer,   et al.   ; Laura Blanco-Martín; Jonny Rutqvist;     Show all 3 Authors
Source:
Computers and Geosciences 2017 v.108 pp. 64-71
ISSN:
0098-3004
Subject:
computer analysis; computer software; deformation; energy balance; engineering; equations; geometry; models
Abstract:
... The TOUGH-FLAC simulator for coupled thermal-hydraulic-mechanical processes modeling has been extended to the finite strain framework. In the approach selected, this extension has required modifications to the flow simulator (TOUGH2) and to the coupling scheme between the geomechanics and the flow sub-problems. In TOUGH2, the mass and energy balance equations have been extended to account for volu ...
DOI:
10.1016/j.cageo.2016.10.015

6. Predicting the impact of land management decisions on overland flow generation: Implications for cesium migration in forested Fukushima watersheds

Author:
Jens T. Birkholzer,   et al.   ; Erica R. Siirila-Woodburn; Carl I. Steefel; Kenneth H. Williams;     Show all 4 Authors
Source:
Advances in water resources 2018 v.113 pp. 42-54
ISSN:
0309-1708
Subject:
cesium; decision making; forest thinning; forested watersheds; groundwater; hydrologic models; land use and land cover maps; nuclear power; overland flow; power plants; prediction; radionuclides; risk management; surface water; typhoons; water resources
Abstract:
... The effects of land use and land cover (LULC) change on environmental systems across the land surface's “critical zone” are highly uncertain, often making prediction and risk management decision difficult. In a series of numerical experiments with an integrated hydrologic model, overland flow generation is quantified for both present day and forest thinning scenarios. A typhoon storm event in a wa ...
DOI:
10.1016/j.advwatres.2018.01.008

7. Mixing and trapping of dissolved CO2 in deep geologic formations with shale layers

Author:
Jens T. Birkholzer,   et al.   ; Elif Agartan; Abdullah Cihan; Tissa H. Illangasekare; Quanlin Zhou;     Show all 5 Authors
Source:
Advances in water resources 2017 v.105 pp. 67-81
ISSN:
0309-1708
Subject:
dissolved carbon dioxide; mathematical models; sandstone; mixing; shale; water resources; permeability
Abstract:
... For dissolution trapping, the spatial variability of the geologic properties of naturally complex storage formations can significantly impact flow patterns and storage mechanisms of dissolved CO2. The significance of diffusive mixing that occurs in low permeability layers embedded between relatively higher permeability materials was highlighted by Agartan et al. (2015) using a highly controlled la ...
DOI:
10.1016/j.advwatres.2017.04.014

8. On the detection of leakage pathways in geological CO2 storage systems using pressure monitoring data: Impact of model parameter uncertainties

Author:
Jens T. Birkholzer,   et al.   ; Yoojin Jung; Quanlin Zhou;     Show all 3 Authors
Source:
Advances in water resources 2015 v.84 pp. 112-124
ISSN:
0309-1708
Subject:
aquifers; carbon dioxide; databases; model uncertainty; monitoring; permeability; prediction
Abstract:
... In this study, we examine the effect of model parameter uncertainties on the feasibility of detecting unknown leakage pathways from CO2 storage formations via inversion of pressure monitoring data, and discuss the strategies for enhancing detectability and reducing the impact of those uncertainties. We conduct a numerical study of leakage detection, using an idealized storage system consisting of ...
DOI:
10.1016/j.advwatres.2015.08.005

9. Long-term modeling of the thermal–hydraulic–mechanical response of a generic salt repository for heat-generating nuclear waste

Author:
Jens T. Birkholzer,   et al.   ; Laura Blanco Martín; Jonny Rutqvist;     Show all 3 Authors
Source:
Engineering geology 2015 v.193 pp. 198-211
ISSN:
0013-7952
Subject:
engineering; geology; models; porosity; prediction; radioactive waste
Abstract:
... A modeling effort has been undertaken to investigate the long-term response of a generic salt repository for heat-generating nuclear waste, including processes that could affect the geological (natural salt host rock) and geotechnical (backfill) barriers. For this purpose, the TOUGH-FLAC sequential simulator for coupled thermal–hydraulic–mechanical processes modeling has recently been provided wit ...
DOI:
10.1016/j.enggeo.2015.04.014

10. Radionuclide Transport Behavior in a Generic Geological Radioactive Waste Repository

Author:
Jens T. Birkholzer,   et al.   ; Marco Bianchi; Hui‐Hai Liu;     Show all 3 Authors
Source:
Ground water 2015 v.53 no.3 pp. 440-451
ISSN:
0017-467X
Subject:
groundwater; groundwater flow; models; radioactive waste
Abstract:
... We performed numerical simulations of groundwater flow and radionuclide transport to study the influence of several factors, including the ambient hydraulic gradient, groundwater pressure anomalies, and the properties of the excavation damaged zone (EDZ), on the prevailing transport mechanism (i.e., advection or molecular diffusion) in a generic nuclear waste repository within a clay‐rich geologic ...
DOI:
10.1111/gwat.12171

11. Flowing fluid electrical conductivity logging of a deep borehole during and following drilling: estimation of transmissivity, water salinity and hydraulic head of conductive zones

Author:
Jens T. Birkholzer,   et al.   ; Christine Doughty; Chin-Fu Tsang; Jan-Erik Rosberg; Christopher Juhlin; Patrick F. Dobson;     Show all 6 Authors
Source:
Hydrogeology journal 2017 v.25 no.2 pp. 501-517
ISSN:
1431-2174
Subject:
analytical methods; data collection; drawdown; drilling; electrical conductivity; water salinity; Sweden
Abstract:
... Flowing fluid electrical conductivity (FFEC) logging is a hydrogeologic testing method that is usually conducted in an existing borehole. However, for the 2,500-m deep COSC-1 borehole, drilled at Åre, central Sweden, it was done within the drilling period during a scheduled 1-day break, thus having a negligible impact on the drilling schedule, yet providing important information on depths of hydra ...
DOI:
10.1007/s10040-016-1497-5

12. On the impact of temperatures up to 200°C in clay repositories with bentonite engineer barrier systems: A study with coupled thermal, hydrological, chemical, and mechanical modeling

Author:
Jens T. Birkholzer,   et al.   ; Liange Zheng; Jonny Rutqvist; Hui-Hai Liu;     Show all 4 Authors
Source:
Engineering geology 2015 v.197 pp. 278-295
ISSN:
0013-7952
Subject:
bentonite; calcite; clay; engineering; hydrology; kaolinite; mechanical models; quartz; radioactive waste; simulation models; smectite; sodium; temperature
Abstract:
... One of the most important design variables for a geological nuclear waste repository is the temperature limit up to which the engineered barrier system (EBS) and the natural geologic environment can be exposed. Up to now, almost all design concepts that involve bentonite-backfilled emplacement tunnels have chosen a maximum allowable temperature of about 100°C. Such a choice is largely based on the ...
DOI:
10.1016/j.enggeo.2015.08.026

13. Early detection of brine and CO2 leakage through abandoned wells using pressure and surface-deformation monitoring data: Concept and demonstration

Author:
Jens T. Birkholzer,   et al.   ; Yoojin Jung; Quanlin Zhou;     Show all 3 Authors
Source:
Advances in water resources 2013 v.62 pp. 555-569
ISSN:
0309-1708
Subject:
carbon dioxide; detection limit; models; monitoring; permeability; risk management; water resources; wells
Abstract:
... In this paper, we develop a methodology for early detection of potential CO2 leakage from geological storage formations using pressure and surface-deformation anomalies. The basic idea is based on the fact that leakage-induced pressure signals travel much faster than the migrating CO2; thus such anomalies may be detected early enough for risk management measures taking effect in avoiding substanti ...
DOI:
10.1016/j.advwatres.2013.06.008

14. Pressure Buildup and Brine Migration During CO₂ Storage in Multilayered Aquifers

Author:
Jens T. Birkholzer,   et al.   ; Abdullah Cihan; Quanlin Zhou;     Show all 3 Authors
Source:
Ground water 2013 v.51 no.2 pp. 252-267
ISSN:
0017-467X
Subject:
aquifers; carbon dioxide; wells
Abstract:
... Carbon dioxide injection into deep saline formations may induce large‐scale pressure increases and migration of native fluid. Local high‐conductivity features, such as improperly abandoned wells or conductive faults, could act as conduits for focused leakage of brine into shallow groundwater resources. Pressurized brine can also be pushed into overlying/underlying formations because of diffuse lea ...
DOI:
10.1111/j.1745-6584.2012.00972.x

15. Making sense of global sensitivity analyses

Author:
Jens T. Birkholzer,   et al.   ; Haruko M. Wainwright; Stefan Finsterle; Yoojin Jung; Quanlin Zhou;     Show all 5 Authors
Source:
Computers & geosciences 2014 v.65 pp. 84-94
ISSN:
0098-3004
Subject:
Monte Carlo method; aquifers; computers; input output analysis; variance
Abstract:
... This study presents improved understanding of sensitivity analysis methods through a comparison of the local sensitivity and two global sensitivity analysis methods: the Morris and Sobol′/Saltelli methods. We re-interpret the variance-based sensitivity indices from the Sobol′/Saltelli method as difference-based measures. It suggests that the difference-based local and Morris methods provide the ef ...
DOI:
10.1016/j.cageo.2013.06.006

16. Multiphase Modeling of Geologic Carbon Sequestration in Saline Aquifers

Author:
Jens T. Birkholzer,   et al.   ; Karl W. Bandilla; Michael A. Celia; Abdullah Cihan; Evan C. Leister;     Show all 5 Authors
Source:
Ground water 2015 v.53 no.3 pp. 362-377
ISSN:
0017-467X
Subject:
aquifers; carbon sequestration; climate change; energy; groundwater; mathematical models; permeability; porosity
Abstract:
... Geologic carbon sequestration (GCS) is being considered as a climate change mitigation option in many future energy scenarios. Mathematical modeling is routinely used to predict subsurface CO₂and resident brine migration for the design of injection operations, to demonstrate the permanence of CO₂storage, and to show that other subsurface resources will not be degraded. Many processes impact the mi ...
DOI:
10.1111/gwat.12315

17. A model comparison initiative for a CO₂ injection field test: an introduction to Sim-SEQ

Author:
Jens T. Birkholzer,   et al.   ; Sumit Mukhopadhyay; Jean-Philippe Nicot; Seyyed A. Hosseini;     Show all 4 Authors
Source:
Environmental earth sciences 2012 v.67 no.2 pp. 601-611
ISSN:
1866-6280
Subject:
carbon dioxide; carbon sequestration; methane; models; subsurface flow; teams; Mississippi
Abstract:
... Because of the complex nature of subsurface flow and transport processes at geologic carbon storage (GCS) sites, modelers often need to implement a number of simplifying choices while building their conceptual models. Such simplifications may lead to a wide range in the predictions made by different modeling teams, even when they are modeling the same injection scenario at the same GCS site. Sim-S ...
DOI:
10.1007/s12665-012-1668-1

18. Identifying chemicals of concern in hydraulic fracturing fluids used for oil production

Author:
Jens T. Birkholzer,   et al.   ; William T. Stringfellow; Mary Kay Camarillo; Jeremy K. Domen; Whitney L. Sandelin; Charuleka Varadharajan; Preston D. Jordan; Matthew T. Reagan; Heather Cooley; Matthew G. Heberger;     Show all 10 Authors
Source:
Environmental pollution 2017 v.220 pp. 413-420
ISSN:
0269-7491
Subject:
acute toxicity; ammonia; aquatic environment; biocides; clay; corrosion; environmental assessment; gelation; gelling agents; hazard characterization; health hazards; hydraulic fracturing; hydrofluoric acid; iron; mammals; nonionic surfactants; occupational health and safety; oil fields; oils; solvents; stabilizers; California
Abstract:
... Chemical additives used for hydraulic fracturing and matrix acidizing of oil reservoirs were reviewed and priority chemicals of concern needing further environmental risk assessment, treatment demonstration, or evaluation of occupational hazards were identified. We evaluated chemical additives used for well stimulation in California, the third largest oil producing state in the USA, by the mass an ...
DOI:
10.1016/j.envpol.2016.09.082

19. The Impact of Fracture–Matrix Interaction on Thermal–Hydrological Conditions in Heated Fractured Rock

Author:
Jens T. Birkholzer,   et al.   ; Yingqi Zhang;     Show all 2 Author
Source:
Vadose zone journal 2006 v.5 no.2 pp. 657-672
ISSN:
1539-1663
Subject:
rocks; heat transfer; unsaturated flow; vadose zone; infiltration (hydrology); Nevada
Abstract:
... Dual-continuum models have been widely used in modeling flow and transport in fractured porous rocks. Among many other applications, dual-continuum approaches were used in predictive models of the thermal–hydrological conditions near emplacement tunnels (drifts) at Yucca Mountain, NV, the proposed site for a radioactive waste repository in the USA. In unsaturated formations such as those at Yucca ...
DOI:
10.2136/vzj2005.0071

20. Modeling Seepage into Heated Waste Emplacement Tunnels in Unsaturated Fractured Rock

Author:
Jens T. Birkholzer,   et al.   ; Sumit Mukhopadhyay; Yvonne W. Tsang;     Show all 3 Authors
Source:
Vadose zone journal 2004 v.3 no.3 pp. 819-836
ISSN:
1539-1663
Subject:
heat; mountains; prediction; radioactive waste; seepage; simulation models; temperature; tuff; uncertainty; vadose zone; volatilization; Nevada
Abstract:
... Predicting the amount of water that may seep into waste emplacement tunnels (drifts) is important for assessing the performance of the proposed geologic repository for high-level radioactive waste at Yucca Mountain, Nevada. The repository will be located in thick, partially saturated fractured tuff that—for the first several hundred years after emplacement—will be heated to above-boiling temperatu ...
DOI:
10.2136/vzj2004.0819