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712 lines
23 KiB
C++
712 lines
23 KiB
C++
/*
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Copyright 2021 Equinor ASA.
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This file is part of the Open Porous Media project (OPM).
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OPM is free software: you can redistribute it and/or modify
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it under the terms of the GNU General Public License as published by
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the Free Software Foundation, either version 3 of the License, or
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(at your option) any later version.
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OPM is distributed in the hope that it will be useful,
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but WITHOUT ANY WARRANTY; without even the implied warranty of
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MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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GNU General Public License for more details.
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You should have received a copy of the GNU General Public License
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along with OPM. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include <config.h>
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#include <opm/simulators/wells/GasLiftGroupInfo.hpp>
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namespace Opm {
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GasLiftGroupInfo::
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GasLiftGroupInfo(
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GLiftEclWells &ecl_wells,
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const Schedule &schedule,
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const SummaryState &summary_state,
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const int report_step_idx,
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const int iteration_idx,
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const PhaseUsage &phase_usage,
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DeferredLogger &deferred_logger,
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WellState &well_state,
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const GroupState &group_state,
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const Communication &comm,
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bool glift_debug
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) :
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GasLiftCommon(well_state, group_state, deferred_logger, comm, glift_debug)
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, ecl_wells_{ecl_wells}
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, schedule_{schedule}
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, summary_state_{summary_state}
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, report_step_idx_{report_step_idx}
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, iteration_idx_{iteration_idx}
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, phase_usage_{phase_usage}
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, glo_{schedule_.glo(report_step_idx_)}
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{
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}
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/****************************************
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* Public methods in alphabetical order
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****************************************/
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double
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GasLiftGroupInfo::
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alqRate(const std::string& group_name)
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{
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auto& group_rate = this->group_rate_map_.at(group_name);
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return group_rate.alq();
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}
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int
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GasLiftGroupInfo::
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getGroupIdx(const std::string& group_name)
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{
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return this->group_idx_.at(group_name);
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}
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double
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GasLiftGroupInfo::
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gasRate(const std::string& group_name) const
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{
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auto& group_rate = this->group_rate_map_.at(group_name);
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return group_rate.gasRate();
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}
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double
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GasLiftGroupInfo::
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gasPotential(const std::string& group_name) const
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{
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auto& group_rate = this->group_rate_map_.at(group_name);
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return group_rate.gasPotential();
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}
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double
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GasLiftGroupInfo::
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waterPotential(const std::string& group_name) const
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{
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auto& group_rate = this->group_rate_map_.at(group_name);
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return group_rate.waterPotential();
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}
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double
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GasLiftGroupInfo::
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oilPotential(const std::string& group_name) const
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{
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auto& group_rate = this->group_rate_map_.at(group_name);
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return group_rate.oilPotential();
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}
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std::optional<double>
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GasLiftGroupInfo::
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gasTarget(const std::string& group_name) const
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{
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auto& group_rate = this->group_rate_map_.at(group_name);
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return group_rate.gasTarget();
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}
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double
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GasLiftGroupInfo::
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getRate(Rate rate_type, const std::string& group_name) const
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{
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switch (rate_type) {
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case Rate::oil:
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return oilRate(group_name);
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case Rate::gas:
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return gasRate(group_name);
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case Rate::water:
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return waterRate(group_name);
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case Rate::liquid:
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return oilRate(group_name) + waterRate(group_name);
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default:
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// Need this to avoid compiler warning : control reaches end of non-void function
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throw std::runtime_error("This should not happen");
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}
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}
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double
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GasLiftGroupInfo::
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getPotential(Rate rate_type, const std::string& group_name) const
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{
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switch (rate_type) {
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case Rate::oil:
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return oilPotential(group_name);
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case Rate::gas:
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return gasPotential(group_name);
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case Rate::water:
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return waterPotential(group_name);
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case Rate::liquid:
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return oilPotential(group_name) + waterPotential(group_name);
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default:
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// Need this to avoid compiler warning : control reaches end of non-void function
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throw std::runtime_error("This should not happen");
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}
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}
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std::tuple<double, double, double, double>
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GasLiftGroupInfo::
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getRates(const int group_idx) const
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{
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const auto& group_name = groupIdxToName(group_idx);
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auto& rates = this->group_rate_map_.at(group_name);
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return std::make_tuple(rates.oilRate(), rates.gasRate(), rates.waterRate(), rates.alq());
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}
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std::optional<double>
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GasLiftGroupInfo::
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getTarget(Rate rate_type, const std::string& group_name) const
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{
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switch (rate_type) {
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case Rate::oil:
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return oilTarget(group_name);
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case Rate::gas:
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return gasTarget(group_name);
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case Rate::water:
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return waterTarget(group_name);
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case Rate::liquid:
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return liquidTarget(group_name);
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default:
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// Need this to avoid compiler warning : control reaches end of non-void function
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throw std::runtime_error("This should not happen");
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}
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}
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std::vector<std::pair<std::string,double>>&
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GasLiftGroupInfo::
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getWellGroups(const std::string& well_name)
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{
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assert(this->well_group_map_.count(well_name) == 1);
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return this->well_group_map_[well_name];
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}
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const std::string&
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GasLiftGroupInfo::
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groupIdxToName(int group_idx) const
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{
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const std::string *group_name = nullptr;
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// TODO: An alternative to the below loop is to set up a reverse map from idx ->
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// string, then we could in theory do faster lookup here..
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for (const auto& [key, value] : this->group_idx_) {
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if (value == group_idx) {
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// NOTE: it is assumed that the mapping from name->idx is one-to-one
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// so there can only be one idx with a given group name.
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group_name = &key;
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break;
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}
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}
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// the caller is responsible for providing a valid idx, so group_name
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// cannot be nullptr here..
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assert(group_name);
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return *group_name;
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}
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bool
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GasLiftGroupInfo::
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hasAnyTarget(const std::string& group_name) const
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{
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return oilTarget(group_name) || gasTarget(group_name)
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|| waterTarget(group_name) || liquidTarget(group_name);
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}
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bool
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GasLiftGroupInfo::
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hasWell(const std::string& well_name)
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{
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return this->well_group_map_.count(well_name) == 1;
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}
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void
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GasLiftGroupInfo::
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initialize()
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{
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const auto& group = this->schedule_.getGroup("FIELD", this->report_step_idx_);
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initializeGroupRatesRecursive_(group);
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std::vector<std::string> group_names;
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std::vector<double> group_efficiency;
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initializeWell2GroupMapRecursive_(
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group, group_names, group_efficiency, /*current efficiency=*/1.0);
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}
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std::optional<double>
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GasLiftGroupInfo::
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liquidTarget(const std::string &group_name) const
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{
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auto& group_rate = this->group_rate_map_.at(group_name);
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return group_rate.liquidTarget();
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}
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std::optional<double>
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GasLiftGroupInfo::
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maxAlq(const std::string& group_name)
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{
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auto& group_rate = this->group_rate_map_.at(group_name);
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return group_rate.maxAlq();
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}
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std::optional<double>
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GasLiftGroupInfo::
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maxTotalGasRate(const std::string& group_name)
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{
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auto& group_rate = this->group_rate_map_.at(group_name);
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return group_rate.maxTotalGasRate();
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}
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double
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GasLiftGroupInfo::
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oilRate(const std::string &group_name) const
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{
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auto& group_rate = this->group_rate_map_.at(group_name);
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return group_rate.oilRate();
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}
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std::optional<double>
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GasLiftGroupInfo::
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oilTarget(const std::string &group_name) const
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{
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auto& group_rate = this->group_rate_map_.at(group_name);
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return group_rate.oilTarget();
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}
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const std::string
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GasLiftGroupInfo::
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rateToString(Rate rate) {
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switch (rate) {
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case Rate::oil:
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return "oil";
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case Rate::gas:
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return "gas";
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case Rate::water:
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return "water";
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case Rate::liquid:
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return "liquid";
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default:
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throw std::runtime_error("This should not happen");
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}
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}
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double
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GasLiftGroupInfo::
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waterRate(const std::string &group_name) const
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{
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auto& group_rate = this->group_rate_map_.at(group_name);
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return group_rate.waterRate();
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}
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std::optional<double>
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GasLiftGroupInfo::
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waterTarget(const std::string &group_name) const
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{
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auto& group_rate = this->group_rate_map_.at(group_name);
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return group_rate.waterTarget();
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}
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void
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GasLiftGroupInfo::
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update(
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const std::string &group_name, double delta_oil, double delta_gas, double delta_water, double delta_alq)
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{
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auto& group_rate = this->group_rate_map_.at(group_name);
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group_rate.update(delta_oil, delta_gas, delta_water, delta_alq);
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}
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void
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GasLiftGroupInfo::
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updateRate(int idx, double oil_rate, double gas_rate, double water_rate, double alq)
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{
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const auto& group_name = groupIdxToName(idx);
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auto& rates = this->group_rate_map_.at(group_name);
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rates.assign(oil_rate, gas_rate, water_rate, alq);
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}
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/****************************************
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* Protected methods in alphabetical order
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****************************************/
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bool
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GasLiftGroupInfo::
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checkDoGasLiftOptimization_(const std::string &well_name)
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{
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if (this->well_state_.gliftCheckAlqOscillation(well_name)) {
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displayDebugMessage_(
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"further optimization skipped due to oscillation in ALQ", well_name);
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return false;
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}
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auto itr = this->ecl_wells_.find(well_name);
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if (itr == this->ecl_wells_.end()) {
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// well_name is not present in the well_model's well container
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//displayDebugMessage_("Could not find well in ecl_wells. Skipping.", well_name);
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return false;
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}
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const Well *well = (itr->second).first;
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//assert(well); // Should never be nullptr
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if (well->isInjector()) {
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displayDebugMessage_("Injector well. Skipping", well_name);
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return false;
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}
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if (this->optimize_only_thp_wells_) {
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const int well_index = (itr->second).second;
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const auto& ws = this->well_state_.well(well_index);
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const Well::ProducerCMode& control_mode = ws.production_cmode;
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if (control_mode != Well::ProducerCMode::THP ) {
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displayDebugMessage_("Not THP control. Skipping.", well_name);
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return false;
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}
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}
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if (!checkNewtonIterationIdxOk_(well_name)) {
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return false;
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}
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if (!this->glo_.has_well(well_name)) {
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displayDebugMessage_(
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"Gas Lift not activated: WLIFTOPT is probably missing. Skipping.", well_name);
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return false;
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}
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auto increment = this->glo_.gaslift_increment();
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// NOTE: According to the manual: LIFTOPT, item 1, :
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// "Increment size for lift gas injection rate. Lift gas is
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// allocated to individual wells in whole numbers of the increment
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// size. If gas lift optimization is no longer required, it can be
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// turned off by entering a zero or negative number."
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if (increment <= 0) {
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if (this->debug) {
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const std::string msg = fmt::format(
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"Gas Lift switched off in LIFTOPT item 1 due to non-positive "
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"value: {}", increment);
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displayDebugMessage_(msg, well_name);
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}
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return false;
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}
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else {
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return true;
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}
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}
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bool
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GasLiftGroupInfo::
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checkNewtonIterationIdxOk_(const std::string &well_name)
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{
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if (this->glo_.all_newton()) {
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const int nupcol = this->schedule_[this->report_step_idx_].nupcol();
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if (this->debug) {
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const std::string msg = fmt::format(
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"LIFTOPT item4 == YES, it = {}, nupcol = {} --> GLIFT optimize = {}",
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this->iteration_idx_,
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nupcol,
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((this->iteration_idx_ <= nupcol) ? "TRUE" : "FALSE"));
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displayDebugMessage_(msg, well_name);
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}
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return this->iteration_idx_ <= nupcol;
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}
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else {
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if (this->debug) {
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const std::string msg = fmt::format(
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"LIFTOPT item4 == NO, it = {} --> GLIFT optimize = {}",
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this->iteration_idx_,
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((this->iteration_idx_ == 1) ? "TRUE" : "FALSE"));
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displayDebugMessage_(msg, well_name);
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}
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return this->iteration_idx_ == 1;
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}
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}
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// This is called by each rank, but the value of "well_name" should be unique
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// across ranks
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void
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GasLiftGroupInfo::
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debugDisplayWellContribution_(
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const std::string& gr_name, const std::string& well_name,
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double eff_factor,
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double well_oil_rate, double well_gas_rate, double well_water_rate,
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double well_alq,
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double oil_rate, double gas_rate, double water_rate,
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double alq
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) const
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{
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const std::string msg = fmt::format("Group rate for {} : Well {} : "
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"eff_factor = {}, oil_rate = {}, gas_rate = {}, water_rate = {}, "
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"alq = {}, New group rates: oil = {}, gas = {}, water = {}, alq = {}",
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gr_name, well_name, eff_factor, well_oil_rate, well_gas_rate,
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well_water_rate, well_alq, oil_rate, gas_rate, water_rate, alq);
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displayDebugMessage_(msg);
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}
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void
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GasLiftGroupInfo::
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debugDisplayUpdatedGroupRates(
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const std::string& name,
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double oil_rate, double gas_rate, double water_rate, double alq) const
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{
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const std::string msg = fmt::format("Updated group info for {} : "
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"oil_rate = {}, gas_rate = {}, water_rate = {}, alq = {}",
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name, oil_rate, gas_rate, water_rate, alq);
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displayDebugMessageOnRank0_(msg);
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}
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void
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GasLiftGroupInfo::
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debugEndInitializeGroup(const std::string& name) const
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{
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const std::string msg = fmt::format("Finished with group {} ...", name);
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displayDebugMessageOnRank0_(msg);
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}
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void
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GasLiftGroupInfo::
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debugStartInitializeGroup(const std::string& name) const
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{
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const std::string msg = fmt::format("Initializing group {} ...", name);
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displayDebugMessageOnRank0_(msg);
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}
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void
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GasLiftGroupInfo::
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displayDebugMessage_(const std::string &msg) const
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{
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if (this->debug) {
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const std::string message = fmt::format("Init group info : {}", msg);
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logMessage_(/*prefix=*/"GLIFT", message);
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}
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}
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void
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GasLiftGroupInfo::
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displayDebugMessage_(const std::string &msg, const std::string &well_name)
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{
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if (this->debug) {
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const std::string message = fmt::format("Well {} : {}", well_name, msg);
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displayDebugMessage_(message);
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}
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}
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std::tuple<double, double, double, double, double, double>
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GasLiftGroupInfo::
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getProducerWellRates_(const Well* well, int well_index)
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{
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const auto& pu = this->phase_usage_;
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const auto& ws= this->well_state_.well(well_index);
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const auto& wrate = ws.well_potentials;
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const auto oil_pot = pu.phase_used[Oil]
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? wrate[pu.phase_pos[Oil]]
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: 0.0;
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const auto gas_pot = pu.phase_used[Gas]
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? wrate[pu.phase_pos[Gas]]
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: 0.0;
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const auto water_pot = pu.phase_used[Water]
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? wrate[pu.phase_pos[Water]]
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: 0.0;
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const auto controls = well->productionControls(this->summary_state_);
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double oil_rate = oil_pot;
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if (controls.hasControl(Well::ProducerCMode::ORAT)) {
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oil_rate = std::min(controls.oil_rate, oil_rate);
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}
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double gas_rate = gas_pot;
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if (controls.hasControl(Well::ProducerCMode::GRAT)) {
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gas_rate = std::min(controls.gas_rate, gas_rate);
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}
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double water_rate = water_pot;
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if (controls.hasControl(Well::ProducerCMode::WRAT)) {
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water_rate = std::min(controls.water_rate, water_rate);
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}
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if (controls.hasControl(Well::ProducerCMode::LRAT)) {
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double liquid_rate = oil_rate + water_rate;
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double liquid_rate_lim = std::min(controls.liquid_rate, liquid_rate);
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water_rate = water_rate / liquid_rate * liquid_rate_lim;
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oil_rate = oil_rate / liquid_rate * liquid_rate_lim;
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}
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return {oil_rate, gas_rate, water_rate, oil_pot, gas_pot, water_pot};
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}
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std::tuple<double, double, double, double, double, double, double>
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GasLiftGroupInfo::
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initializeGroupRatesRecursive_(const Group &group)
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{
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std::array<double,7> rates{};
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if (this->debug) debugStartInitializeGroup(group.name());
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auto& [oil_rate, water_rate, gas_rate, oil_potential, water_potential, gas_potential, alq] = rates;
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if (group.wellgroup()) {
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for (const std::string& well_name : group.wells()) {
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// NOTE: we cannot simply use:
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//
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// const auto &well =
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// this->schedule_.getWell(well_name, this->report_step_idx_);
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//
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// since the well may not be active (present in the well container)
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auto itr = this->ecl_wells_.find(well_name);
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if (itr != this->ecl_wells_.end()) {
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const Well *well = (itr->second).first;
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assert(well); // Should never be nullptr
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const int index = (itr->second).second;
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if (well->isProducer()) {
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auto [sw_oil_rate, sw_gas_rate, sw_water_rate, sw_oil_pot, sw_gas_pot, sw_water_pot] = getProducerWellRates_(well, index);
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auto sw_alq = this->well_state_.getALQ(well_name);
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double factor = well->getEfficiencyFactor();
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oil_rate += (factor * sw_oil_rate);
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gas_rate += (factor * sw_gas_rate);
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water_rate += (factor * sw_water_rate);
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oil_potential += (factor * sw_oil_pot);
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gas_potential += (factor * sw_gas_pot);
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water_potential += (factor * sw_water_pot);
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alq += (factor * sw_alq);
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if (this->debug) {
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debugDisplayWellContribution_(
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group.name(), well_name, factor,
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sw_oil_pot, sw_gas_pot, sw_water_pot, sw_alq,
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oil_rate, gas_rate, water_rate, alq
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);
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}
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}
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}
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}
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this->comm_.sum(rates.data(), rates.size());
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}
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else {
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for (const std::string& group_name : group.groups()) {
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if (!this->schedule_.back().groups.has(group_name))
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continue;
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const Group& sub_group = this->schedule_.getGroup(
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group_name, this->report_step_idx_);
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auto [sg_oil_rate, sg_gas_rate, sg_water_rate,
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sg_oil_pot, sg_gas_pot, sg_water_pot, sg_alq]
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= initializeGroupRatesRecursive_(sub_group);
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const auto gefac = sub_group.getGroupEfficiencyFactor();
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oil_rate += (gefac * sg_oil_rate);
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gas_rate += (gefac * sg_gas_rate);
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water_rate += (gefac * sg_water_rate);
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oil_potential += (gefac * sg_oil_pot);
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gas_potential += (gefac * sg_gas_pot);
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water_potential += (gefac * sg_water_pot);
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alq += (gefac * sg_alq);
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}
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}
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if (this->debug) debugEndInitializeGroup(group.name());
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std::optional<double> oil_target, gas_target, water_target, liquid_target, max_total_gas, max_alq;
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const auto controls = group.productionControls(this->summary_state_);
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if (group.has_control(Group::ProductionCMode::LRAT)) {
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liquid_target = controls.liquid_target;
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}
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if (group.has_control(Group::ProductionCMode::ORAT)) {
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oil_target = controls.oil_target;
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}
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if (group.has_control(Group::ProductionCMode::GRAT)) {
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gas_target = controls.gas_target;
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}
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if (group.has_control(Group::ProductionCMode::WRAT)) {
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water_target = controls.water_target;
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}
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if (this->glo_.has_group(group.name())) {
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const auto &gl_group = this->glo_.group(group.name());
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max_alq = gl_group.max_lift_gas();
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max_total_gas = gl_group.max_total_gas();
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}
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if (oil_target || liquid_target || water_target || gas_target || max_total_gas || max_alq) {
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updateGroupIdxMap_(group.name());
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if(oil_target)
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oil_rate = std::min(oil_rate, *oil_target);
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if(gas_target)
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gas_rate = std::min(gas_rate, *gas_target);
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if(water_target)
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water_rate = std::min(water_rate, *water_target);
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if(liquid_target) {
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double liquid_rate = oil_rate + water_rate;
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double liquid_rate_limited = std::min(liquid_rate, *liquid_target);
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oil_rate = oil_rate / liquid_rate * liquid_rate_limited;
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water_rate = water_rate / liquid_rate * liquid_rate_limited;
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}
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this->group_rate_map_.try_emplace(group.name(),
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oil_rate, gas_rate, water_rate, alq,
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oil_potential, gas_potential, water_potential,
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oil_target, gas_target, water_target, liquid_target, max_total_gas, max_alq);
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if (this->debug) {
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debugDisplayUpdatedGroupRates(
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group.name(), oil_rate, gas_rate, water_rate, alq);
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}
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}
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return std::make_tuple(oil_rate, gas_rate, water_rate, oil_potential, gas_potential, water_potential, alq);
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}
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void
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GasLiftGroupInfo::
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initializeWell2GroupMapRecursive_(
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const Group &group,
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std::vector<std::string> &group_names,
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std::vector<double> &group_efficiency,
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double cur_efficiency)
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{
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double gfac = group.getGroupEfficiencyFactor();
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cur_efficiency = gfac * cur_efficiency;
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for (auto &item : group_efficiency) {
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item *= gfac;
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}
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if (this->group_rate_map_.count(group.name()) == 1) {
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// extract the subset of groups that has limits or targets that can affect
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// gas lift optimization.
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group_names.push_back(group.name());
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group_efficiency.push_back(gfac);
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}
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if (group.wellgroup()) {
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for (const std::string& well_name : group.wells()) {
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// TODO: can the same well be memember of two different groups
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// (on the same recursion level) ?
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assert(this->well_group_map_.count(well_name) == 0);
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if (checkDoGasLiftOptimization_(well_name)) {
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const auto &well = this->schedule_.getWell(
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well_name, this->report_step_idx_);
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double wfac = well.getEfficiencyFactor();
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auto [itr, success] = this->well_group_map_.insert(
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{well_name, /*empty vector*/ {}});
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assert(success);
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auto &vec = itr->second;
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assert(group_names.size() == group_efficiency.size());
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auto iter2 = group_efficiency.begin();
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for (auto iter1 = group_names.begin();
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iter1 != group_names.end(); ++iter1)
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{
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double efficiency = (*iter2) * wfac;
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vec.emplace_back(/*group_name=*/*iter1, efficiency);
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++iter2;
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}
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}
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}
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}
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else {
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for (const std::string& group_name : group.groups()) {
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if (!this->schedule_.back().groups.has(group_name))
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continue;
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const Group& sub_group = this->schedule_.getGroup(
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group_name, this->report_step_idx_);
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initializeWell2GroupMapRecursive_(
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sub_group, group_names, group_efficiency, cur_efficiency);
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}
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}
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if (this->group_rate_map_.count(group.name()) == 1) {
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group_names.pop_back();
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group_efficiency.pop_back();
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}
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}
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// TODO: It would be more efficient if the group idx map was build once
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// per time step (or better: once per report step) and saved e.g. in
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// the well state object, instead of rebuilding here for each of
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// NUPCOL well iteration for each time step.
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void
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GasLiftGroupInfo::
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updateGroupIdxMap_(const std::string &group_name)
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{
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if (this->group_idx_.count(group_name) == 0) {
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//auto [itr, success] =
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this->group_idx_.try_emplace(group_name, this->next_group_idx_);
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this->next_group_idx_++;
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}
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}
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} // namespace Opm
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