For constant capillar pressure function the saturation is
determined by cell depths:
Sg_max, Sw_min
----- goc ----
Sg_min, Sw_min
----- woc ----
Sg_min, Sw_max
- use time stepping algorithm pid instead of pid + iter
Adjusting the time-steps on the number of linear iterations does
currently not give any improvents on the time-stepping.
- Change the pid tolerance. The time-stepper will take longer time-steps
and thus reduce the simulation time significantly. The Norne and the SPE
results does not degrade
- Less aggressive reduction of time-steps after convergence problems
Explicitly adds bhp control on rate controlled history matching
injector.The default bhp limit is a large number to make sure that the
well does not switch. Alternativly bhp limit can be specified using
WELTARG. This is typically done to make sure the bhp limit stays within
the pressure limits in the PVT tables. Support for WELTARG is also added
to the history matching producers (WCONHIST)
Gas and solvent is combinded and solved together
The input in the well equation is then the
total gas phase = hydro carbon gas + solvent gas
This may need to be reconsidered later, as the model
is tested.
assumes:
- solvent is immiscible in the oil phase
- gas pvt and relperms are used for the solvent
- no initial solvent in the model
Solvent is injected using the WSOLVENT keyword
TODO: Make it possible to change WSOLVENT
1) NNC are added the grad, div and average operators
2) NNC are added the upwindSelector
3) NNC transmissibilities are added to the face transmissibilities
The phase rate residuals are scaled by the average volume factor to
avoid too large weight on the gas phase rates.
This also makes the well convergence criteria more consistent with the
mass-balance residuals for the cells.
1) Comments are added
2) Variable names are made more descriptive
3) Unecessary usage of subset are removed by extracting needed
quantities for the perforation cells once in advance
The function is simplified by removing the update of the primal
variables (the ADBs). As a consequence updateWellControls must be
called prior to the creation of the primal variables.
The volume weighted averaged NTG values are used to get more
reasonable x and y transmissibilities for the cells effected by the
MINPV grid processing algorithm.
This commit starts the process of supporting the MINPV-FILL keyword
where upscaled properties are used for the merged/filled cells.
The average well block pressure is used instead of the well cell
pressure when the well properties are evaluated.
Temperature, rs, rv, phase conditions are still well cells values.
Perforation pressures are stored in the well state
1) swatinit() is changed to setSwatInitScaling() to make it obvious that
we are modifying the props.
2) the descriptions of saturation and pc now makes more sense
3) the method is removed from the sibling class and the interface and
the type of new_props is changed from BlackoilPropsAdInterface to
BlackoilPropsAdFromDeck
5) The same modification is added to sim_fibo_ad_cp
The capillary pressure function in new_props is scaled to match the
capillary pressure function in props.
This is a temporary workaround while the simulator uses two different
property object.
The derivatives of the vappars are included in the Jacobian.
To avoid inf derivatives for vap<1, the oil saturation is restricted
from below by sqrt(epsilon).
The number of perforations may change due to completions beeing shut.
If the number of perforations changes the perfPhaseRates are set to
equal the wellRates/(number of perforations) instead of the values from
the previous time step.
Rename the the meaning for shut as whats used in Eclipse.
STOP: Well stopped off above the formation. I.e. allow for flow in the
well.
SHUT: Well completely isolated from the formation. The well is removed
from the well list.
Shut is renamed to stopped in the wellsManager in order to better
reflect the name logic in the deck. This PR implements the nessesary
change in opm-autodiff
There has been an inconsitancy in which pressure to use in the
evaluation of the fluid properties.
With this commit the phase pressure is used for all the evaluation of
the fluid properties.
The multiplier contribution from the getRegionMultiplier is added to the
face multipliers. The getRegionMultiplier method is called with the cell
index on both side of the face in order to return the correct region
multiplier across faults.
1) Add the possibility for the user to chose between local and global
coordinate permeability in the transmissibility calculations.
2) Trow for CpGrid
3) Add default for switch
1. The right hand side is solved only once
2. The solver is constructed directly with the matrix
3. const is added where it was missing
4. More commennts is added
5. Variable names are changed for clarification
The following comments has been adressed
1. An array is used in stead of pair
2. is not empty is used instead of size>0 to check if the well has been
initialized before
3. const_iterator is used instead of iterator
4. partial copy is removed
5. WellMapType is no longer mutable
If we need more than 150 linear iterations, it's probably something
wrong, and we may be better of by restarting with smaller time-steps.
TODO: make it possible for the user to specify this number.
The non-diagonal elements in the sub-matrices in the Schur complement is
no longer ignored. Instead of assuming the matrix do be diagonal, and
compute the invert of the sub-matrix, small linear systems are solved
using superLU.
Tested on SPE3 and Norne. (With this fix a slightly modified norne runs
until 3292 days)
The residual output is changed from max residual to
total mass balance residual. In this way the output
resemble what is actually used as convergence criteria.
With the introduction of shut wells the same ordering in the well states
can no longer be assumed. The well names is instead used to map the old
well state to the new. Also the partial_copying is moved into the
initialization.
Tested on SPE1, SPE3, SPE9 and Norne. (Do not change the SPEs and is
nessesary for the Norne)
The old rs and rv values are used in the phase transitions calculations.
The update of rs and rv to the state is therefore moved after the phase
transitions in order for the code to use the old values.
The porv is computed if needed and the Eclipsestate will return false on
this test before it is called.
This commit applies the change to the sim_fibo_ad_cp.cpp
Shut wells are not added to the well list and the well index should
therefore not be increased when well control is set. This is similar to
whats is done for shut wells in createWellsFromSpecs.
Shut wells are not added to the well list and thus not considered in the
simulator.
The shut well test in test_wellsmanager is modified to assert this
behaviour.
BUG: This change provokes an assert in the EclipeWriter as number of
wells in wellstate is different from number of wells in the schedule.
First the change in oil saturation is calculated from changes in water
and oil saturation. Then oil saturation is updated based on this change
instead of just fixed to 1-sw-sg. With this change the oil saturation is
less sensitive towards numerical errors that may cause very small oil
saturations. Witch again may cause the simulator to think that the gas
phase is saturation with vaporized oil when it is not.
Tor Harald Sandve