The OGS 1.4 version of PFLOTRAN is the fourth in a series of releases designed to support reservoir engineering required for carbon dioxide capture and storage (CCS).
Compared to the previous OGS 1.3 version of PFLOTRAN, the main new elements are:
Carter-Tracy aquifer model
Fixed-temperature thermal boundaries
An hysteresis model for relative permeability and capillary pressure
Introduction of well group control
Enhanced reporting: FLIP, mass balance, CO2 solution and residual trapping
The well model now support PI multiplier and variable drilling direction by completion
New default convergence criteria based on dimensionless residual, included in RESERVOIR_DEFAULT
NOGASSOL option to turn off the solution of gas in the aqueous phase
Units are now required for all well values such as reference depths.
RESERVOIR_DEFAULTS has been extended to set the STOL and ITOL non-linear convergence criteria and the maximum number of non-linear iterations.