We don't need to do the calculations in terms of EvalWell when we're
going to reduce this to the .value() before calling the PI/II
calculation routine. We can also get by with a simpler approach to
computing the II by assuming we always inject pure phases and no
cross flow in injectors.
Suggested by: [at]atgeirr
This commit makes the PI/II calculation more closely mirror the
approach taken when computing connection flow rates. In particular,
we switch to using total mobility, mixing and volume ratios for
injecting connections while producing connections continue to use
the phase mobilities and formation volume factors derived from
conditions in the connecting cells. We also include dissolved
gas/oil ratios and vaporised oil/gas ratios in order to fully
capture the surface flow conditions.
We split the handling of producing/injecting connections out to
separate helper functions in order to make the overall logic in
updateProductivityIndex() more manageable.ex() more manageable.
This commit ensures that we calculate the well and connection level
per-phase steady-state productivity index (PI) at the end of a
completed time step (triggered from endTimeStep()).
We add a new data member,
BlackoilWellModel<>::prod_index_calc_
which holds one WellProdIndexCalculator for each of the process'
local wells and a new interface member function
WellInterface::updateProductivityIndex
which uses a per-well PI calculator to actually compute the PI
values and store those in the WellState. Implement this member
function for both StandardWell and MultisegmentWell. Were it not
for 'getMobility' existing only in the derived classes, the two
equal implementations could be merged and moved to the interface.
We also add a new data member to the WellStateFullyImplicitBlackoil
to hold the connection-level PI values. Finally, remove the
conditional PI calculation from StandardWell's well equation
assembly routine.
As it was, the getALQ() call would insert injectors into the ALQ maps,
leading to trouble.
Also, this gets rid of the slightly weird thing that the output data
structure's producer/injector status was only set after creation,
in BlackoilWellModel::wellData().
A const well state was passed to functions that were modifying it by
calling setALQ(). Now the setALQ() method is made non-const, mutable
references to the well state are passed where sensible. The getALQ()
method uses map::at() instead of map::operator[] and no longer modifies
current_alq_. With this, it is now easy to see which methods modify the
well state and which don't. The alq-related members in the
WellStateFullyImplicitBlackoil class are no longer 'mutable'-qualified.
In serial we use the first cell of the first well to determine the
pvt region index for a group. Previously, we used the first cell of
the first local well in a parallel run. Unfortunately that may lead
to different pvt region indices being used for the same goup on
different processes.
We fix this by using the same approach in parallel as we already use
in serial. For this we use Well::seqIndex() to determine the needed
ordering.
and use it in the WellInterface instead of creating a vector
with these indices there. The original approach recreates
information in another path of the well and assumes that all
connections are in a process's local partition. That assumption
does not hold any more for distributed wells.
Currently the simulator creats the polyhedreal grid from an eclGrid from opm-common
TODO
- make it possible to create the grid directly from DGF or MRST format
- fix issue on norne.
