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Merge pull request #4573 from hakonhagland/glift_grad

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Fix bug when recalculating gaslift gradient
This commit is contained in:
Markus Blatt
2023-04-03 11:20:15 +02:00
committed by GitHub
parent c52ab4ccd5 973a883043
commit 734eb76910
6 changed files with 114 additions and 84 deletions
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30
opm/simulators/wells/GasLiftSingleWellGeneric.cpp
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@@ -85,8 +85,14 @@ GasLiftSingleWellGeneric::GasLiftSingleWellGeneric(DeferredLogger& deferred_logg
****************************************/
// NOTE: Used from GasLiftStage2
std::optional<GasLiftSingleWellGeneric::GradInfo>
GasLiftSingleWellGeneric::calcIncOrDecGradient(
double oil_rate, double gas_rate, double water_rate, double alq, const std::string& gr_name_dont_limit, bool increase) const
GasLiftSingleWellGeneric::calcIncOrDecGradient( double oil_rate,
double gas_rate,
double water_rate,
double alq,
const std::string& gr_name_dont_limit,
bool increase,
bool debug_output
) const
{
auto [new_alq_opt, alq_is_limited] = addOrSubtractAlqIncrement_(alq, increase);
// TODO: What to do if ALQ is limited and new_alq != alq?
@@ -99,15 +105,10 @@ GasLiftSingleWellGeneric::calcIncOrDecGradient(
if (checkGroupALQrateExceeded(delta_alq, gr_name_dont_limit))
return std::nullopt;
if (auto bhp = computeBhpAtThpLimit_(new_alq)) {
if (auto bhp = computeBhpAtThpLimit_(new_alq, debug_output)) {
auto [new_bhp, bhp_is_limited] = getBhpWithLimit_(*bhp);
// TODO: What to do if BHP is limited?
auto rates = computeWellRates_(new_bhp, bhp_is_limited);
// double new_oil_rate, new_gas_rate, new_water_rate;
// bool oil_is_limited, gas_is_limited, water_is_limited;
// std::tie(new_oil_rate, oil_is_limited) = getOilRateWithLimit_(rates);
// std::tie(new_gas_rate, gas_is_limited) = getGasRateWithLimit_(rates);
// std::tie(new_water_rate, water_is_limited) = getWaterRateWithLimit_(rates);
auto rates = computeWellRates_(new_bhp, bhp_is_limited, debug_output);
const auto ratesLimited = getLimitedRatesFromRates_(rates);
BasicRates oldrates = {oil_rate, gas_rate, water_rate, false};
const auto new_rates = updateRatesToGroupLimits_(oldrates, ratesLimited, gr_name_dont_limit);
@@ -288,7 +289,7 @@ computeConvergedBhpAtThpLimitByMaybeIncreasingALQ_() const
auto alq = this->orig_alq_;
double new_alq = alq;
std::optional<double> bhp;
while (alq <= (this->max_alq_ + this->increment_)) {
while ((alq < this->max_alq_) || checkALQequal_(alq, this->max_alq_)) {
if (bhp = computeBhpAtThpLimit_(alq); bhp) {
new_alq = alq;
break;
@@ -321,7 +322,8 @@ GasLiftSingleWellGeneric::computeInitialWellRates_() const
rates->water);
displayDebugMessage_(msg);
}
} else {
}
else {
displayDebugMessage_("Aborting optimization.");
}
return {rates, initial_alq};
@@ -1531,10 +1533,10 @@ GasLiftSingleWellGeneric::OptimizeState::checkAlqOutsideLimits(double alq, [[may
}
} else { // we are decreasing lift gas
if (alq == 0) {
ss << "ALQ is zero, cannot decrease further. Stopping iteration.";
ss << "ALQ is zero, cannot decrease further. Stopping iteration. ";
result = true;
} else if (alq < 0) {
ss << "Negative ALQ: " << alq << ". Stopping iteration.";
ss << "Negative ALQ: " << alq << ". Stopping iteration. ";
result = true;
}
// NOTE: A negative min_alq_ means: allocate at least enough lift gas
@@ -1593,7 +1595,7 @@ GasLiftSingleWellGeneric::checkGroupALQrateExceeded(double delta_alq, const std:
const auto& pairs = group_info_.getWellGroups(well_name_);
for (const auto& [group_name, efficiency] : pairs) {
// in stage 2 we don't want to limit the rate to the group
// target we are trying to redistribute the gaslift within
// target we are trying to redistribute the gaslift within
if (gr_name_dont_limit == group_name)
continue;
auto max_alq_opt = group_info_.maxAlq(group_name);