Michael A. Celia
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View article: A comparative study of neural ordinary differential equations and neural operators for modeling temporal dynamics
A comparative study of neural ordinary differential equations and neural operators for modeling temporal dynamics Open
Capturing the dynamics of relational systems is a key challenge in the natural sciences, with applications ranging from simulating molecular interactions to analyzing particle mechanics. Machine learning approaches have made significant pr…
View article: The Role of Subsurface Engineering in the Net-zero Energy Transition
The Role of Subsurface Engineering in the Net-zero Energy Transition Open
Subsurface energy systems have historically focused on extraction of hydrocarbons through mining (coal) or drilling and pumping (oil and gas). These extractive industries have led to myriad environmental damages at the land surface as well…
View article: Integrated, Geothermal-CO2 Storage Reservoirs: Adaptable, Multi-Stage, Sustainable, Energy-Recovery Strategies that Reduce Carbon Intensity and Environmental Risk
Integrated, Geothermal-CO2 Storage Reservoirs: Adaptable, Multi-Stage, Sustainable, Energy-Recovery Strategies that Reduce Carbon Intensity and Environmental Risk Open
We analyze an adaptable, multi-stage, energy-recovery approach to reduce carbon intensity through sustainable geothermal energy production and secure geologic CO2 storage (GCS) with low environmental risk in saline, sedimentary formations.…
View article: Correction to A Model To Estimate Carbon Dioxide Injectivity and Storage Capacity for Geological Sequestration in Shale Gas Wells
Correction to A Model To Estimate Carbon Dioxide Injectivity and Storage Capacity for Geological Sequestration in Shale Gas Wells Open
ADVERTISEMENT RETURN TO ISSUEPREVAddition/CorrectionNEXTORIGINAL ARTICLEThis notice is a correctionCorrection to A Model To Estimate Carbon Dioxide Injectivity and Storage Capacity for Geological Sequestration in Shale Gas WellsRyan W. J. …
View article: Methane emissions from oil and gas platforms in the North Sea
Methane emissions from oil and gas platforms in the North Sea Open
Since 1850 the concentration of atmospheric methane (CH4), a potent greenhouse gas, has more than doubled. Recent studies suggest that emission inventories may be missing sources and underestimating emissions. To investigate whether offsho…
View article: Measuring methane emissions from oil and gas platforms in the North Sea
Measuring methane emissions from oil and gas platforms in the North Sea Open
Recent studies suggest oil and natural gas production facilities in North America may be underestimating methane (CH4) emissions during extraction. This, coupled with unusually high CH4 mole fractions observed at coastal sites during onsho…
View article: Multiscale Modeling of CO<sub>2</sub> Migration and Trapping in Fractured Reservoirs with Validation by Model Comparison and Real-Site Applications (Final Technical Report)
Multiscale Modeling of CO<sub>2</sub> Migration and Trapping in Fractured Reservoirs with Validation by Model Comparison and Real-Site Applications (Final Technical Report) Open
This report documents the accomplishments achieved during the project titled “Multiscale Modeling of CO2 Migration and Trapping in Fractured Reservoirs with Validation by Model Comparison and Real-Site Applications” funded by the US Depart…
View article: Infrastructure to enable deployment of carbon capture, utilization, and storage in the United States
Infrastructure to enable deployment of carbon capture, utilization, and storage in the United States Open
Significance Carbon capture, utilization, and storage (CCUS) is a crucial technology needed to limit warming to the 2 °C target of the Paris Agreement. However, deployment is lagging far behind estimates of what is required. We demonstrate…
View article: A Pseudo‐Vertical Equilibrium Model for Slow Gravity Drainage Dynamics
A Pseudo‐Vertical Equilibrium Model for Slow Gravity Drainage Dynamics Open
Vertical equilibrium (VE) models are computationally efficient and have been widely used for modeling fluid migration in the subsurface. However, they rely on the assumption of instant gravity segregation of the two fluid phases which may …
View article: Vertically Integrated Dual-porosity and Dual-permeability Models for CO2 Sequestration in Fractured Geological Formation
Vertically Integrated Dual-porosity and Dual-permeability Models for CO2 Sequestration in Fractured Geological Formation Open
Analysis of geological storage of carbon dioxide (CO2) in deep saline aquifers requires computationally efficient mathematical models to predict the pressure evolution and the injected CO2 plume migration. The subsurface system of CO2 inje…
View article: Applicability of Vertically Integrated Models for Carbon Storage Modeling in Structured Heterogeneous Domains
Applicability of Vertically Integrated Models for Carbon Storage Modeling in Structured Heterogeneous Domains Open
Numerical modeling is an essential tool for investigating the potential of geologic carbon storage and evaluating storage sites. Many different modeling approaches can be applied to problems related to geologic carbon storage, with the cho…
View article: Model complexity and choice of model approaches for practical simulations of CO<sub>2</sub> injection, migration, leakage and long-term fate
Model complexity and choice of model approaches for practical simulations of CO<sub>2</sub> injection, migration, leakage and long-term fate Open
This report documents the accomplishments achieved during the project titled “Model complexity and choice of model approaches for practical simulations of CO2 injection,migration, leakage and long-term fate” funded by the US Department of …
View article: Identification and characterization of high methane-emitting abandoned oil and gas wells
Identification and characterization of high methane-emitting abandoned oil and gas wells Open
Significance Millions of abandoned oil and gas wells exist across the United States and around the world. Our study analyzes historical and new field datasets to quantify the number of abandoned wells in Pennsylvania, individual and cumula…
View article: Effects of Spatial Heterogeneity in Rainfall and Vegetation Type on Soil Moisture and Evapotranspiration
Effects of Spatial Heterogeneity in Rainfall and Vegetation Type on Soil Moisture and Evapotranspiration Open
Nonlinear plant-scale interactions controlling the soil-water balance are generally not valid at larger spatial scales due to spatial heterogeneity in rainfall and vegetation type. The relationships between spatially averaged variables are…
View article: Axisymmetric flows from fluid injection into a confined porous medium
Axisymmetric flows from fluid injection into a confined porous medium Open
We study the axisymmetric flows generated from fluid injection into a horizontal confined porous medium that is originally saturated with another fluid of different density and viscosity. Neglecting the effects of surface tension and fluid…