Classification of CO2 Geologic Storage: Resource and Capacity

Geologic Storage of CO2

Dynamic imaging provides an effective way to integrate previous time-lapse data with current data in order to estimate a current model. We present two methods useful for continuous dynamic reservoir and subsurface monitoring. The first method is a stochastic method for the inversion of geophysical data. It uses the ensemble Kalman filter (EnKF) that we demonstrate using time-lapse surface seism...

Geologic Storage of CO2

Health, Safety, and Environmental Screening and Ranking Framework for Geologic CO2 Storage Site Selection

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Multi-scale Petrography and Fluid Dynamics of Caprocks Associated with Geologic Co2 Storage

Implementation of the underground storage of anthropogenic CO2 in geologic media requires containment of the CO2. The general concept for onshore, deep (> 800 m) geologic environments includes both a permeable reservoir and an overlying low permeability, high capillary-breakthrough-pressure “caprock”. Significant migration of the buoyant CO2 from the reservoir may lead to inadequate performance...

Statistical Approaches to Quantifying Uncertainty of Monitoring and Performance at Geologic CO2 Storage Sites

This work evaluates the detection sensitivity of deep subsurface pressure monitoring within an uncertain CO2 sequestration system by linking the output of an analytical reduced-order model and first-order uncertainty analysis. A baseline (nonleaky) modeling run was compared against 10 different leakage scenarios, where the cap rock permeability was increased by factors of 2 to 100 (cap rock per...