CCS and Power Systems
Carbon Storage - Geologic Storage Technologies and Simulation and Risk Assessment
Validation of Models Simulating Capillary and Dissolution Trapping
Performer: Trustees of Colorado School of Mines
Project No: FE0004630
As part of intermediate-scale testing, the researchers have completed the selection and testing of surrogate fluids, and small tank experiments have been completed for testing capillary trapping and density-dependent fingers in homogeneous and simple heterogeneous systems (Figure 3).
As part of modeling code evaluation, the researchers simulated the two-phase flow in small tank experiments and compared the model results with experimental data. The numerical model based on the classical two-phase flow theory was able to capture the main features observed during the migration of the CO2 surrogate fluid in the small tanks.
The researchers have developed a new multi-phase flow solver (based on the Finite Volume method) for analysis of the experimental data and new constitutive models and non-equilibrium mass transfer.
The project team has developed a new code for analyzing heterogeneity, which computes connectivity based on invasion percolation algorithm. This code also involves algorithms to upscale two-phase flow parameters.
A new hysteresis model was developed by the research team. The model was tested against multiple data sets to assess accuracy in prediction of post-injection capillary entrapment.