Gcomp
GCOMP is a three dimensional, multiphase reservoir simulator.  It
can be run in fully compositional or black-oil mode.  It will
accommodate either Cartesian or Cylindrical grids.  In black-oil
mode it can model pseudo-miscible displacement using the
Todd-Longstaff method.  The new Windows version is fully coupled
to model flow from the reservoir to the plant, including simulation of
tubing, facility and gathering systems.