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289 lines
12 KiB
C++
289 lines
12 KiB
C++
/*
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Copyright 2017 SINTEF Digital, Mathematics and Cybernetics.
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Copyright 2017 Statoil ASA.
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Copyright 2018 IRIS
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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/WellConstraints.hpp>
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#include <opm/input/eclipse/Schedule/Well/WVFPEXP.hpp>
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#include <opm/core/props/BlackoilPhases.hpp>
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#include <opm/simulators/utils/DeferredLogger.hpp>
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#include <opm/simulators/wells/SingleWellState.hpp>
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#include <opm/simulators/wells/WellInterfaceGeneric.hpp>
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namespace Opm
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{
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bool WellConstraints::
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checkIndividualConstraints(SingleWellState& ws,
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const SummaryState& summaryState,
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const RateConvFunc& calcReservoirVoidageRates,
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bool& thp_limit_violated_but_not_switched,
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DeferredLogger& deferred_logger) const
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{
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if (well_.isProducer()) {
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auto new_cmode = this->activeProductionConstraint(ws, summaryState,
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calcReservoirVoidageRates,
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thp_limit_violated_but_not_switched,
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deferred_logger);
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if (new_cmode != ws.production_cmode) {
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ws.production_cmode = new_cmode;
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return true;
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}
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}
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if (well_.isInjector()) {
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auto new_cmode = this->activeInjectionConstraint(ws, summaryState,
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thp_limit_violated_but_not_switched,
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deferred_logger);
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if (new_cmode != ws.injection_cmode) {
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ws.injection_cmode = new_cmode;
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return true;
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}
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}
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return false;
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}
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Well::InjectorCMode WellConstraints::
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activeInjectionConstraint(const SingleWellState& ws,
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const SummaryState& summaryState,
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bool& thp_limit_violated_but_not_switched,
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DeferredLogger& deferred_logger) const
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{
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const PhaseUsage& pu = well_.phaseUsage();
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const auto controls = well_.wellEcl().injectionControls(summaryState);
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const auto currentControl = ws.injection_cmode;
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if (controls.hasControl(Well::InjectorCMode::BHP) && currentControl != Well::InjectorCMode::BHP)
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{
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const auto& bhp = controls.bhp_limit;
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double current_bhp = ws.bhp;
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if (bhp < current_bhp)
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return Well::InjectorCMode::BHP;
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}
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if (controls.hasControl(Well::InjectorCMode::RATE) && currentControl != Well::InjectorCMode::RATE)
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{
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InjectorType injectorType = controls.injector_type;
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double current_rate = 0.0;
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switch (injectorType) {
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case InjectorType::WATER:
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{
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current_rate = ws.surface_rates[ pu.phase_pos[BlackoilPhases::Aqua] ];
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break;
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}
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case InjectorType::OIL:
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{
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current_rate = ws.surface_rates[ pu.phase_pos[BlackoilPhases::Liquid] ];
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break;
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}
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case InjectorType::GAS:
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{
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current_rate = ws.surface_rates[ pu.phase_pos[BlackoilPhases::Vapour] ];
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break;
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}
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default:
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throw("Expected WATER, OIL or GAS as type for injectors " + well_.name());
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}
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if (controls.surface_rate < current_rate)
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return Well::InjectorCMode::RATE;
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}
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if (controls.hasControl(Well::InjectorCMode::RESV) && currentControl != Well::InjectorCMode::RESV)
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{
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double current_rate = 0.0;
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if( pu.phase_used[BlackoilPhases::Aqua] )
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current_rate += ws.reservoir_rates[ pu.phase_pos[BlackoilPhases::Aqua] ];
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if( pu.phase_used[BlackoilPhases::Liquid] )
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current_rate += ws.reservoir_rates[ pu.phase_pos[BlackoilPhases::Liquid] ];
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if( pu.phase_used[BlackoilPhases::Vapour] )
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current_rate += ws.reservoir_rates[ pu.phase_pos[BlackoilPhases::Vapour] ];
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if (controls.reservoir_rate < current_rate)
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return Well::InjectorCMode::RESV;
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}
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// Note: we are not working on injecting network yet, so it is possible we need to change the following line
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// to be as follows to incorporate the injecting network nodal pressure
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// if (well_.wellHasTHPConstraints(summaryState) && currentControl != Well::InjectorCMode::THP)
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if (controls.hasControl(Well::InjectorCMode::THP) && currentControl != Well::InjectorCMode::THP)
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{
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const auto& thp = well_.getTHPConstraint(summaryState);
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double current_thp = ws.thp;
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if (thp < current_thp) {
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bool rate_less_than_potential = true;
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for (int p = 0; p < well_.numPhases(); ++p) {
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// Currently we use the well potentials here computed before the iterations.
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// We may need to recompute the well potentials to get a more
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// accurate check here.
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rate_less_than_potential = rate_less_than_potential && (ws.surface_rates[p]) <= ws.well_potentials[p];
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}
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if (!rate_less_than_potential) {
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thp_limit_violated_but_not_switched = false;
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return Well::InjectorCMode::THP;
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} else {
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thp_limit_violated_but_not_switched = true;
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deferred_logger.debug("NOT_SWITCHING_TO_THP",
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"The THP limit is violated for injector " +
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well_.name() +
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". But the rate will increase if switched to THP. " +
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"The well is therefore kept at " + WellInjectorCMode2String(currentControl));
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}
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}
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}
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return currentControl;
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}
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Well::ProducerCMode WellConstraints::
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activeProductionConstraint(const SingleWellState& ws,
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const SummaryState& summaryState,
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const RateConvFunc& calcReservoirVoidageRates,
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bool& thp_limit_violated_but_not_switched,
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DeferredLogger& deferred_logger) const
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{
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const PhaseUsage& pu = well_.phaseUsage();
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const auto controls = well_.wellEcl().productionControls(summaryState);
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const auto currentControl = ws.production_cmode;
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if (controls.hasControl(Well::ProducerCMode::BHP) && currentControl != Well::ProducerCMode::BHP) {
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const double bhp_limit = controls.bhp_limit;
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double current_bhp = ws.bhp;
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if (bhp_limit > current_bhp)
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return Well::ProducerCMode::BHP;
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}
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if (controls.hasControl(Well::ProducerCMode::ORAT) && currentControl != Well::ProducerCMode::ORAT) {
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double current_rate = -ws.surface_rates[pu.phase_pos[BlackoilPhases::Liquid]];
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if (controls.oil_rate < current_rate)
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return Well::ProducerCMode::ORAT;
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}
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if (controls.hasControl(Well::ProducerCMode::WRAT) && currentControl != Well::ProducerCMode::WRAT) {
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double current_rate = -ws.surface_rates[pu.phase_pos[BlackoilPhases::Aqua]];
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if (controls.water_rate < current_rate)
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return Well::ProducerCMode::WRAT;
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}
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if (controls.hasControl(Well::ProducerCMode::GRAT) && currentControl != Well::ProducerCMode::GRAT) {
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double current_rate = -ws.surface_rates[pu.phase_pos[BlackoilPhases::Vapour]];
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if (controls.gas_rate < current_rate)
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return Well::ProducerCMode::GRAT;
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}
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if (controls.hasControl(Well::ProducerCMode::LRAT) && currentControl != Well::ProducerCMode::LRAT) {
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double current_rate = -ws.surface_rates[pu.phase_pos[BlackoilPhases::Liquid]];
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current_rate -= ws.surface_rates[pu.phase_pos[BlackoilPhases::Aqua]];
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bool skip = false;
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if (controls.liquid_rate == controls.oil_rate) {
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const double current_water_rate = ws.surface_rates[pu.phase_pos[BlackoilPhases::Aqua]];
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if (std::abs(current_water_rate) < 1e-12) {
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skip = true;
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deferred_logger.debug("LRAT_ORAT_WELL", "Well " + well_.name() + " The LRAT target is equal the ORAT target and the water rate is zero, skip checking LRAT");
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}
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}
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if (!skip && controls.liquid_rate < current_rate)
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return Well::ProducerCMode::LRAT;
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}
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if (controls.hasControl(Well::ProducerCMode::RESV) && currentControl != Well::ProducerCMode::RESV) {
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double current_rate = 0.0;
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if (pu.phase_used[BlackoilPhases::Aqua])
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current_rate -= ws.reservoir_rates[pu.phase_pos[BlackoilPhases::Aqua]];
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if (pu.phase_used[BlackoilPhases::Liquid])
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current_rate -= ws.reservoir_rates[pu.phase_pos[BlackoilPhases::Liquid]];
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if (pu.phase_used[BlackoilPhases::Vapour])
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current_rate -= ws.reservoir_rates[pu.phase_pos[BlackoilPhases::Vapour]];
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if (controls.prediction_mode && controls.resv_rate < current_rate)
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return Well::ProducerCMode::RESV;
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if (!controls.prediction_mode) {
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const int fipreg = 0; // not considering the region for now
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const int np = well_.numPhases();
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std::vector<double> surface_rates(np, 0.0);
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if (pu.phase_used[BlackoilPhases::Aqua])
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surface_rates[pu.phase_pos[BlackoilPhases::Aqua]] = controls.water_rate;
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if (pu.phase_used[BlackoilPhases::Liquid])
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surface_rates[pu.phase_pos[BlackoilPhases::Liquid]] = controls.oil_rate;
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if (pu.phase_used[BlackoilPhases::Vapour])
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surface_rates[pu.phase_pos[BlackoilPhases::Vapour]] = controls.gas_rate;
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std::vector<double> voidage_rates(np, 0.0);
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calcReservoirVoidageRates(fipreg, well_.pvtRegionIdx(), surface_rates, voidage_rates);
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double resv_rate = 0.0;
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for (int p = 0; p < np; ++p)
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resv_rate += voidage_rates[p];
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if (resv_rate < current_rate)
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return Well::ProducerCMode::RESV;
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}
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}
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if (well_.wellHasTHPConstraints(summaryState) && currentControl != Well::ProducerCMode::THP) {
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const auto& thp = well_.getTHPConstraint(summaryState);
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double current_thp = ws.thp;
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if (thp > current_thp && !ws.trivial_target) {
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// If WVFPEXP item 4 is set to YES1 or YES2
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// switching to THP is prevented if the well will
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// produce at a higher rate with THP control
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const auto& wvfpexp = well_.wellEcl().getWVFPEXP();
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bool rate_less_than_potential = true;
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if (wvfpexp.prevent()) {
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for (int p = 0; p < well_.numPhases(); ++p) {
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// Currently we use the well potentials here computed before the iterations.
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// We may need to recompute the well potentials to get a more
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// accurate check here.
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rate_less_than_potential = rate_less_than_potential && (-ws.surface_rates[p]) <= ws.well_potentials[p];
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}
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}
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if (!wvfpexp.prevent() || !rate_less_than_potential) {
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thp_limit_violated_but_not_switched = false;
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return Well::ProducerCMode::THP;
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} else {
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thp_limit_violated_but_not_switched = true;
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deferred_logger.info("NOT_SWITCHING_TO_THP",
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"The THP limit is violated for producer " +
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well_.name() +
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". But the rate will increase if switched to THP. " +
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"The well is therefore kept at " + WellProducerCMode2String(currentControl));
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}
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}
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}
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return currentControl;
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}
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} // namespace Opm
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