The well potentials are caculated based on the well rates and pressure
drawdown at every time step. They are used to calculate default guide
rates used in group controlled wells.
well_perforation_pressure_diffs is stored in
WellStateFullyImplicitBlackoil as it is needed in the well potential
calculations.
i.e. it now supports stuff like MULTFLT in the schedule
section. Possibly, the MPI-parallel code paths need some fixes. (but
if the geology is not changed during the simulation, the parallel code
will do the same as before.)
the most fundamental change of this patch is that the
reference/pointer to the DerivedGeology object is made
non-constant. IMO that's okay, though, becase the geology can no
longer assumed to be constant over the whole simulation run.
in particular, where to put empty lines and spaces. Also added a
copyright statement for myself to a few files and added a comment. the
new comment was requested by [at]bska, the rest was requested by
[at]atgeirr.
this is necessary because some older simulations only provide the
full-fledged solver class but no physical model.
(also, this allows to use something else than the standard newton
solver.)
so, far it is just a copy of the old "SimulatorFullyImplicitBlackoil"
class (which became a simple forward to the base class). The intention
is to unify the common simulator code in this class to avoid excessive
copy-and-pasting.
