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Merge pull request #4409 from GitPaean/update_well_state_with_thp_target2

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update well state when switching to THP control for producers
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Kai Bao 2023-02-10 16:08:32 +01:00 committed by GitHub
commit 0d00337275
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GPG Key ID: 4AEE18F83AFDEB23
7 changed files with 104 additions and 24 deletions
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4
opm/simulators/wells/MultisegmentWell.hpp
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@ -258,6 +258,10 @@ namespace Opm
const Simulator& ebos_simulator,
DeferredLogger& deferred_logger) const;
bool updateWellStateWithTHPTargetProd(const Simulator& ebos_simulator,
WellState& well_state,
DeferredLogger& deferred_logger) const;
virtual double getRefDensity() const override;
virtual bool iterateWellEqWithControl(const Simulator& ebosSimulator,

28
opm/simulators/wells/MultisegmentWell_impl.hpp
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@ -2020,4 +2020,32 @@ namespace Opm
connII[phase_pos] = connIICalc(mt * fs.invB(this->flowPhaseToEbosPhaseIdx(phase_pos)).value());
}
template<typename TypeTag>
bool
MultisegmentWell<TypeTag>::
updateWellStateWithTHPTargetProd(const Simulator& ebos_simulator,
WellState& well_state,
DeferredLogger& deferred_logger) const
{
const auto& summary_state = ebos_simulator.vanguard().summaryState();
auto bhp_at_thp_limit = computeBhpAtThpLimitProdWithAlq(
ebos_simulator, summary_state, this->getALQ(well_state), deferred_logger);
if (bhp_at_thp_limit) {
std::vector<double> rates(this->number_of_phases_, 0.0);
computeWellRatesWithBhpIterations(ebos_simulator, *bhp_at_thp_limit, rates, deferred_logger);
auto& ws = well_state.well(this->name());
ws.surface_rates = rates;
ws.bhp = *bhp_at_thp_limit;
ws.thp = this->getTHPConstraint(summary_state);
return true;
} else {
return false;
}
}
} // namespace Opm

3
opm/simulators/wells/StandardWell.hpp
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@ -334,6 +334,9 @@ namespace Opm
DeferredLogger& deferred_logger,
const WellState &well_state) const;
bool updateWellStateWithTHPTargetProd(const Simulator& ebos_simulator,
WellState& well_state,
DeferredLogger& deferred_logger) const;
virtual double getRefDensity() const override;

45
opm/simulators/wells/StandardWell_impl.hpp
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@ -1783,6 +1783,34 @@ namespace Opm
return potentials;
}
template<typename TypeTag>
bool
StandardWell<TypeTag>::
updateWellStateWithTHPTargetProd(const Simulator& ebos_simulator,
WellState& well_state,
DeferredLogger& deferred_logger) const
{
const auto& summary_state = ebos_simulator.vanguard().summaryState();
auto bhp_at_thp_limit = computeBhpAtThpLimitProdWithAlq(
ebos_simulator, summary_state, this->getALQ(well_state), deferred_logger);
if (bhp_at_thp_limit) {
std::vector<double> rates(this->number_of_phases_, 0.0);
computeWellRatesWithBhp(ebos_simulator, *bhp_at_thp_limit, rates, deferred_logger);
auto& ws = well_state.well(this->name());
ws.surface_rates = rates;
ws.bhp = *bhp_at_thp_limit;
ws.thp = this->getTHPConstraint(summary_state);
return true;
} else {
return false;
}
}
template<typename TypeTag>
double
StandardWell<TypeTag>::
@ -2363,9 +2391,14 @@ namespace Opm
alq_value,
this->getTHPConstraint(summary_state),
deferred_logger);
if (bhpAtLimit) {
auto v = frates(*bhpAtLimit);
if (bhpAtLimit && std::all_of(v.cbegin(), v.cend(), [](double i){ return i <= 0; }))
if (std::all_of(v.cbegin(), v.cend(), [](double i){ return i <= 0; }) ) {
return bhpAtLimit;
}
}
auto fratesIter = [this, &ebos_simulator, &deferred_logger](const double bhp) {
// Solver the well iterations to see if we are
@ -2384,9 +2417,15 @@ namespace Opm
alq_value,
this->getTHPConstraint(summary_state),
deferred_logger);
v = frates(*bhpAtLimit);
if(bhpAtLimit && std::all_of(v.cbegin(), v.cend(), [](double i){ return i <= 0; }))
if (bhpAtLimit) {
// should we use fratesIter here since fratesIter is used in computeBhpAtThpLimitProd above?
auto v = frates(*bhpAtLimit);
if (std::all_of(v.cbegin(), v.cend(), [](double i){ return i <= 0; }) ) {
return bhpAtLimit;
}
}
// we still don't get a valied solution.
return std::nullopt;

2
opm/simulators/wells/WellBhpThpCalculator.cpp
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@ -738,7 +738,7 @@ bruteForceBracket(const std::function<double(const double)>& eq,
bool finding_bracket = false;
low = range[0];
high = range[1];
const int sample_number = 100;
const int sample_number = 200;
const double interval = (high - low) / sample_number;
double eq_low = eq(low);
double eq_high;

4
opm/simulators/wells/WellInterface.hpp
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@ -201,6 +201,10 @@ public:
WellState& well_state,
DeferredLogger& deferred_logger) const;
virtual bool updateWellStateWithTHPTargetProd(const Simulator& ebos_simulator,
WellState& well_state,
DeferredLogger& deferred_logger) const = 0;
enum class IndividualOrGroup { Individual, Group, Both };
bool updateWellControl(const Simulator& ebos_simulator,
const IndividualOrGroup iog,

24
opm/simulators/wells/WellInterface_impl.hpp
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@ -965,26 +965,28 @@ namespace Opm
}
case Well::ProducerCMode::THP:
{
const bool update_success = updateWellStateWithTHPTargetProd(ebos_simulator, well_state, deferred_logger);
if (!update_success) {
// the following is the original way of initializing well state with THP constraint
// keeping it for robust reason in case that it fails to get a bhp value with THP constraint
// more sophisticated design might be needed in the future
auto rates = ws.surface_rates;
this->adaptRatesForVFP(rates);
double bhp = WellBhpThpCalculator(*this).calculateBhpFromThp(well_state,
rates,
well,
summaryState,
this->getRefDensity(),
deferred_logger);
const double bhp = WellBhpThpCalculator(*this).calculateBhpFromThp(
well_state, rates, well, summaryState, this->getRefDensity(), deferred_logger);
ws.bhp = bhp;
ws.thp = this->getTHPConstraint(summaryState);
// if the total rates are negative or zero
// we try to provide a better intial well rate
// we try to provide a better initial well rate
// using the well potentials
double total_rate = -std::accumulate(rates.begin(), rates.end(), 0.0);
if (total_rate <= 0.0){
for (int p = 0; p<np; ++p) {
const double total_rate = -std::accumulate(rates.begin(), rates.end(), 0.0);
if (total_rate <= 0.0) {
for (int p = 0; p < this->number_of_phases_; ++p) {
ws.surface_rates[p] = -ws.well_potentials[p];
}
}
}
break;
}
case Well::ProducerCMode::GRUP: