A5044954344- Drilling and Well Engineering
- Nuclear and radioactivity studies
- Graphite, nuclear technology, radiation studies
- Tunneling and Rock Mechanics
- Concrete and Cement Materials Research
- Hydraulic Fracturing and Reservoir Analysis
- CO2 Sequestration and Geologic Interactions
- Nuclear Materials and Properties
- Grouting, Rheology, and Soil Mechanics
- Groundwater flow and contamination studies
- Hydrocarbon exploration and reservoir analysis
- Nuclear reactor physics and engineering
- Soil and Unsaturated Flow
- Rock Mechanics and Modeling
- Oil and Gas Production Techniques
- Landfill Environmental Impact Studies
- Transportation Safety and Impact Analysis
- Geophysical Methods and Applications
- Enhanced Oil Recovery Techniques
- Geological Modeling and Analysis
- Innovative concrete reinforcement materials
- Concrete Corrosion and Durability
- Hydrological Forecasting Using AI
- Reservoir Engineering and Simulation Methods
- Mineral Processing and Grinding
Sandia National Laboratories
2015-2025
Sandia National Laboratories California
2015-2024
Princeton University
2011-2018
Response Technologies (United States)
2014
Geological storage of CO2 (GCS), also referred to as carbon sequestration, is a critical component for decreasing anthropogenic atmospheric emissions. Stored will exist supercritical phase, most likely in deep, saline, sedimentary reservoirs. Research at the Center Frontiers Subsurface Energy Security (CFSES), Department Energy, Frontier Center, provides insights into process. The integration pore-scale experiments, molecular dynamics simulations, and study natural analogue sites has enabled...
Quantitative understanding of uranium transport by high temperature fluids is crucial for confident assessment its migration in a number natural and artificially induced contexts, such as hydrothermal ore deposits nuclear waste stored geological repositories. An additional recent atypical context would be the seawater inundated fuel Fukushima Daiichi Nuclear Power Plant. Given wide applicability, will useful regardless whether power finds increased or decreased adoption future. The amount...
Abstract Molecular structures of kerogen control hydrocarbon production in unconventional reservoirs. Significant progress has been made developing model representations various structures. These models have widely used for the prediction gas adsorption and migration shale matrix. However, using density functional perturbation theory (DFPT) calculations vibrational spectroscopic measurements, we here show that a large gap may still remain between existing actual structures, therefore calling...
Thousands of abandoned wellbores may lie within the aerial extent a CO2 storage operation. These represent potential leakage pathway and leaky wellbore needs to be re-completed or otherwise repaired restore seal integrity ensure containment stored CO2. Due high cost recompleting well, sufficient economic incentive exists if viable repair technology is available. In this paper, we examine use epoxy nanocomposites as materials that have excellent bond characteristics with both steel cement...
Abstract The chemical potential of water may play an important role in adsorption and capillary condensation under multiphase conditions at geologic CO 2 storage sites. Injection large volumes anhydrous will result changing values the supercritical phase. We hypothesize that first reflect low concentration dissolved dry . As formation dissolves into is transported by phase, increase. present a pore‐scale model ‐water interface or menisci configuration based on augmented Young‐Laplace...
Glycoboehmite (GB) materials are synthesized by a solvothermal reaction to form layered aluminum oxyhydroxide (boehmite) modified intercalated butanediol molecules. These hybrid offer platform design with potentially novel sorption, wetting, and catalytic properties. Several synthetic methods have been used, resulting in different structural spectroscopic properties, but atomistic detail is needed determine the interlayer structure explore control of GB materials. Here, we use classical...
Disposal of commercial spent nuclear fuel in a geologic repository is studied. In situ heater experiments underground research laboratories provide realistic representation subsurface behavior under disposal conditions. This study describes process model development and modeling analysis for full-scale experiment opalinus clay host rock. The results thermal-hydrology simulation, solving coupled nonisothermal multiphase flow, comparison with experimental data are presented. closely match the data.
Microscale defects (microannuli) at the steel-cement and rock-cement interfaces are a major cause of failure in integrity wellbore systems. defects/microcracks as small 30 μm sufficient to create significant leakage pathway for fluids. In this paper, authors propose use nanomodified methyl methacrylate (NM-MMA) polymer seal material 30-μm microcracks. Four materials were evaluated their ability serve an effective microcracks: microfine cement, epoxy, (MMA), NM-MMA incorporating 0.5% by...
One of the main challenges using a high fiber volume content in cement composite is narrow margin beyond which fibers can cause an adverse effect on mechanical properties. In this paper, significance size distribution and different proportions chopped milled carbon microfibers are investigated. The mixes’ flowability showed improvement with altering despite having content. Uniaxial compression cylinders unnotched notched beams were cast then tested at 7 28 days age. It was found that...
Abstract Rock, concrete, and other engineered materials are often composed of several minerals that change volumetrically in response to variations the moisture content local environment. Such differential shrinkage is caused by varying rates between mineral compositions during dehydration. Using both 3D X-ray imaging geo-architected samples peridynamic (PD) numerical simulations, we show spatial distribution clay affects crack network geometry with distributed particles yielding most...