Review
Geochemistry & Geophysics
Ali Mahmoud, Ahmed Gowida, Murtada Saleh Aljawad, Mustafa Al-Ramadan, Ahmed Farid Ibrahim
Summary: The study reviews recent advances in hydraulic fracturing diagnostic methods and techniques in unconventional reservoirs, including tracer analysis, fiber optics, tiltmeters, microseismic monitoring, and DFIT. Each technique has its own advantages and limitations, and integrating multiple techniques may lead to a more informative fracture description.
Article
Energy & Fuels
Mauricio Maldonado-Dominguez, Oscar Gonzalez-Antonio, Luis Enrique Diaz-Paulino, Roberto C. Canas-Alonso, Elba Xochitiotzi-Flores, Carlos A. Jimenez-Garcia, Marco A. Almaraz-Giron, Victor Manuel Luna-Pabello, Margarita Romero-Avila, Fernando Barragan-Aroche, Simon Lopez-Ramirez
Summary: This study developed a family of cationic fluorinated tracers specifically designed for carbonate oil reservoirs through computational design and application-oriented approach. These tracers showed high stability, low adsorption, and successful quantification of reservoir heterogeneity, making them promising candidates for supporting the design of exploitation processes in carbonate oil reservoirs.
Article
Geochemistry & Geophysics
Achyut Mishra, Maartje M. Boon, Sally M. Benson, Maxwell N. Watson, Ralf R. Haese
Summary: The study emphasizes the significance of incorporating sub-core lithological heterogeneity for accurate estimation of carbon mineral trapping capacities. Reactive transport simulations on different geological models were compared to natural CO2 storage data, and it was found that mm- to cm-scale lithological interfaces can greatly increase carbon mineralization estimates.
Article
Environmental Sciences
V. F. Bense, T. Kruijssen, M. P. van der Ploeg, B. L. Kurylyk
Summary: Assessing aquitard hydraulic properties is difficult but critical for understanding recharge and discharge in aquifer systems. This study compares traditional methods for estimating hydraulic conductivity to new methods using numerical modeling, head monitoring, and heat source inference, showing that the latter yields accurate results efficiently.
WATER RESOURCES RESEARCH
(2022)
Article
Engineering, Chemical
Yilong Qiu, Huiyu Chen, Wangxu Li, Feng Wu, Zhenggui Li
Summary: The study compares and analyzes the method of filling tracer particles in different ways to optimize PIV flowmeter measurements of natural gas, and finds that filling particles in L pipes can improve measurement accuracy. The optimized structure was successfully applied to measurements of different flow rates, significantly improving metering deviation.
Article
Engineering, Environmental
Chao Wang, Xinyue Gu, Ruochen Dong, Zeyou Chen, Xin Jin, Juan Gao, Yong Sik Ok, Cheng Gu
Summary: It has been found that nanoplastics, especially PVC NPs, exhibit enhanced fluorescence after exposure to simulated and natural solar irradiation. This fluorescence can serve as an efficient indicator for tracking the migration of nanoparticles in organisms. Moreover, the photoaged NPs undergo easier biodegradation compared to pristine NPs, potentially affecting their fate in food chains.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Sport Sciences
Francois Gallant, Ross M. Murray, Catherine M. Sabiston, Mathieu Belanger
Summary: This study aimed to explore sport participation profiles among adolescents and to describe transitions between profiles across grades. Five distinct sport participation profiles were identified, with only multi-sport participants being unlikely to transition to non-participants over time. Encouraging multi-sport participation may help prevent later non-participation.
JOURNAL OF SPORTS SCIENCES
(2022)
Article
Geochemistry & Geophysics
Rainer Daehn, Bart Baeyens, Maria Marques Fernandes
Summary: The study investigated the uptake of Zn by different clay minerals and porewater compositions, finding that under certain conditions, some model calculations may underestimate the data.
GEOCHIMICA ET COSMOCHIMICA ACTA
(2021)
Article
Engineering, Geological
Ruud Weijermars, Jihoon Wang, Tri Pham
Summary: The study investigates the impact of pressure-loaded natural fractures on wellbore stability, analyzing the instability caused by pressure fractures and the changes in fracture propagation paths.
ROCK MECHANICS AND ROCK ENGINEERING
(2022)
Article
Engineering, Geological
Amin Jamshidi, Mostafa Sedaghatnia
Summary: About 50 years ago, Franklin and Chandra developed a slake durability test for assessing the weathering resistance of argillaceous rocks. The test method was later standardized by the International Society for Rock Mechanics. It is used to evaluate the durability of rocks under wetting-drying cycles.
ROCK MECHANICS AND ROCK ENGINEERING
(2023)
Article
Engineering, Environmental
Wenzhang Tian, Jun Yang, Wen-Qing Xu, Lin Lian, Xia-Wen Qiu, Xiao Liang, Chen-Chou Wu, Xiangjun Gong, Guangzhao Zhang, Lian-Jun Bao, Eddy Y. Zeng
Summary: Quantifying chemical transfer across the air-water interface is crucial for understanding global geochemical processes. This study presents a fluorescence optical system that visualizes the formation of the air-water microlayer and quantifies the diffusion flux using pyrene. The results show that the air-water microlayer consists of a surface microlayer in water and a diffusion layer in air.
ENVIRONMENTAL SCIENCE & TECHNOLOGY
(2023)
Article
Energy & Fuels
Shuxian Jiang, Jinze Song, Chang Liu, Youming Xiong, Weixin Pang, Yufa He
Summary: This paper investigates the heat transfer in offshore argillaceous-silt natural gas hydrate reservoirs with sand control. It establishes a temperature prediction model and presents a coupled pressure-temperature model for the flowing fluid inside the wellbore. The study finds that strict sand control significantly reduces the risk of secondary hydrate formation, but it also has a negative effect on natural gas production. To balance the two, it suggests installing heating electrodes in high-risk locations and optimizing riser thickness.
ENERGY SCIENCE & ENGINEERING
(2023)
Article
Oceanography
John N. Smith, W. M. Smethie, Nuria Casacuberta
Summary: Measurements of tracers in the Arctic Ocean have been used to calculate mean ages, Gamma and mixing, Delta parameters to understand water circulation and mixing time scales. The values of Gamma and Delta increase rapidly with depth, but their ratio remains approximately 1, supporting their use in deep ocean transport. The isolines of Gamma=20 years outline the return flow of Atlantic Water towards Fram Strait, while the isolines of Gamma=25 years indicate older water in the basin interior. Values of Delta remain relatively constant, suggesting that mixing occurs upstream.
JOURNAL OF GEOPHYSICAL RESEARCH-OCEANS
(2022)
Article
Geosciences, Multidisciplinary
Gustavo M. Marques, Nora Loose, Elizabeth Yankovsky, Jacob M. Steinberg, Chiung-Yin Chang, Neeraja Bhamidipati, Alistair Adcroft, Baylor Fox-Kemper, Stephen M. Griffies, Robert W. Hallberg, Malte F. Jansen, Hemant Khatri, Laure Zanna
Summary: We describe an idealized primitive-equation model for studying mesoscale turbulence and use a hierarchy of grid resolutions to make eddy-resolving calculations more affordable. The model incorporates intermediate complexity, with idealized basin-scale geometry and non-uniform ocean depth, allowing for mesoscale eddy interactions with topography. The model is perfectly adiabatic and fills a gap between quasi-geostrophic models and idealized general circulation models. Results show that the model is approaching convergence in mean kinetic energy for the ocean mesoscale processes of interest and exhibits a wide range of dynamics due to resolving mesoscale turbulence.
GEOSCIENTIFIC MODEL DEVELOPMENT
(2022)
Article
Environmental Sciences
Annelie Ehrhardt, Sylvia Koszinski, Horst H. Gerke
Summary: The phenomenon of lateral subsurface flow (LSF) was studied in different soil types by applying potassium bromide and observing the soil solution and soil samples. Heterogeneous subsurface structures were found to have an impact on the transport time of pesticides and nutrients from agricultural areas.
Article
Chemistry, Physical
Cornelia Wigger, Thomas Gimmi, Arnaud Muller, Luc R. Van Loon
APPLIED CLAY SCIENCE
(2018)
Article
Geochemistry & Geophysics
Martina Bestel, Martin A. Glaus, Sabrina Frick, Thomas Gimmi, Fanni Juranyi, Luc R. Van Loon, Larryn W. Diamond
APPLIED GEOCHEMISTRY
(2018)
Article
Geochemistry & Geophysics
Daniel Rufer, H. Niklaus Waber, Thomas Gimmi
APPLIED GEOCHEMISTRY
(2018)
Article
Biochemical Research Methods
S. Huclier-Markai, F. Monteau, A. M. Fernandez, A. Vinsot, B. Grambow
RAPID COMMUNICATIONS IN MASS SPECTROMETRY
(2018)
Article
Chemistry, Multidisciplinary
Josep M. Soler, Carl I. Steefel, Thomas Gimmi, Olivier X. Leupin, Veerle Cloet
ACS EARTH AND SPACE CHEMISTRY
(2019)
Article
Chemistry, Physical
Thomas Gimmi, Sergey V. Churakov
APPLIED CLAY SCIENCE
(2019)
Editorial Material
Geochemistry & Geophysics
Andreas Gautschi, Irina Gaus, Thomas Gimmi, Martin Mazurek, Paul Wersin, Michel Cathelineau, Adrian Bath
APPLIED GEOCHEMISTRY
(2019)
Review
Instruments & Instrumentation
Zhenhua Lin, Romain V. H. Dagnelie, Virginie Blin, Agnes Vinsot, Yanick Lettry, Benoit Hautefeuille, Marie-Genevieve Blanchin
NUCLEAR INSTRUMENTS & METHODS IN PHYSICS RESEARCH SECTION A-ACCELERATORS SPECTROMETERS DETECTORS AND ASSOCIATED EQUIPMENT
(2019)
Article
Construction & Building Technology
A. Shafizadeh, T. Gimmi, L. R. Van Loon, A. P. Kaestner, U. K. Maeder, S. Churakov
CEMENT AND CONCRETE RESEARCH
(2020)
Article
Environmental Sciences
Christophe Tournassat, Carl Steefel, Thomas Gimmi
WATER RESOURCES RESEARCH
(2020)
Article
Geochemistry & Geophysics
F. Eichinger, T. Gimmi, A. Mori, J. Ruedi
APPLIED GEOCHEMISTRY
(2020)
Article
Geochemistry & Geophysics
Pietro Luraschi, Thomas Gimmi, Luc R. Van Loon, Amir Shafizadeh, Sergey Churakov
APPLIED GEOCHEMISTRY
(2020)
Article
Environmental Sciences
Max Jaquenoud, William T. Elam, Tim Grundl, Thomas Gimmi, Andreas Jakob, Senecio Schefer, Veerle Cloet, Pierre De Canniere, Luc R. Van Loon, Olivier X. Leupin
Summary: The Mont Terri rock laboratory has conducted extensive experimental research over the past two decades, focusing on improving our understanding of radionuclide transport within Opalinus Clay. The latest DR-B experiment utilizes in-situ X-ray fluorescence to monitor an iodide plume within the Opalinus Clay, providing a novel method for large-scale and long-term data acquisition.
Article
Engineering, Geological
Leonardo Hax Damiani, Georg Kosakowski, Agnes Vinsot, Sergey Churakov
Summary: The Hydrogen Transfer experiment conducted at the Mont Terri underground rock laboratory in Switzerland is an in situ study that investigates the interaction and transport of injected hydrogen in Opalinus Clay, a type of claystone formation. A Python-based model was developed to analyze and simulate the experiment's data, including the diffusion of dissolved gases and solutes in claystone pore water, thermodynamic modeling of gas-water-solid phase equilibria, and simulations of chemical equilibria and reaction kinetics. The model accurately reproduces the temporal changes in gas pressure, composition, and solute concentrations measured in situ. The effective diffusion coefficients for dissolved gases in Opalinus Clay derived from the modeling closely match measurements from other experimental studies. The study highlights the importance of accurately describing the temporal variations in hydrogen injection and inflow of formation water for modeling microbially mediated hydrogen consumption in the injection interval.
ENVIRONMENTAL GEOTECHNICS
(2022)
Article
Nuclear Science & Technology
Jacques De Lamare, Agnes Vinsot, Antoine Pasteau
Summary: This paper discusses measurements of air pressure, relative humidity, temperature, and oxygen molar fraction in a micro-tunnel experiment at the Andra's Meuse/Haute-Marne underground research laboratory. The study reveals that corrosion of steel liners, water evaporation from saturated clay, and leaks between the tunnel excavation and the access drift are the main factors affecting the profiles of relative humidity and oxygen molar fraction. A simple model is used to simulate the oxygen evolution and calculate associated air fluxes, which matches well with experimental data when diffusion-driven leaks are taken into account.
PROGRESS IN NUCLEAR ENERGY
(2022)