to determine whether we will treat mutlisegment wells with
MultisegmentWell well model. Currently, it will be faulse by default.
It might be changed to be true by default when considering the
multisegment well model is well tested.
that parameter is called "max_strict_iter". This increases the
flexibility of this slightly and it avoids screwing up the default
value for the "max_iter" parameter in the future. The credits for this
patch go to [at]atgeirr for proposing it.
i.e. give up after 10 instead of 15 Newton iterations. since this now
also causes the CNV convergence criterion to be ignored after 8
instead of after 13 Newton iterations, and because CNV stagnation
seems to be the cause for the vast majority of the failures, it does
not lead to worse results or more time step chopping on Norne but
causes fewer wasted iterations.
Start using the parameters in the parameter file instead of the hard-
coded ones.
Unify the restriction of the drs and drv in black-oil and black-oil-
solvent updateState
1) changes dp_max_rel default to 0.2
2) introduces a dbhp_max_rel paramter to restrict the bhp update in the
updateWellState() (instead of using the dp_max_rel) Default is set to
1.0
3) Restrict rs and rv between 0,and the satruation value
4) Set rs and rv to zero for the water only cases
5) Guard against zero rs and rv when calcuating the maximum allowed rs
and rv change.
Tested on norne, model 2 and model 2.2
Number of problems for the different models with and without this fix
Case
this PR master
Norne
10
45
Model 2
21
78
Model 2.2
200
248
- restrict pressure changes. Set default to 1.0 (this also effects flow)
- change default number of linear iterations to 150
- tell stabilized newton the residual occilates even if it occilates in
only one phase (this also effects flow)
- avoid problems realated to division on small numbers
Tested on SPE9, norne and Model 2 with significant improvments.
A boolen user parameter is added to controll the computation of well
potential.
This is a temporary fix to assure that no extra computation time is used
on well potential calculation if it is not needed. The long term fix
will require a more thorough revising of the well group implementation.
