/*
Copyright 2017 SINTEF Digital, Mathematics and Cybernetics.
Copyright 2017 Statoil ASA.
Copyright 2016 - 2017 IRIS AS.
This file is part of the Open Porous Media project (OPM).
OPM is free software: you can redistribute it and/or modify
it under the terms of the GNU General Public License as published by
the Free Software Foundation, either version 3 of the License, or
(at your option) any later version.
OPM is distributed in the hope that it will be useful,
but WITHOUT ANY WARRANTY; without even the implied warranty of
MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
GNU General Public License for more details.
You should have received a copy of the GNU General Public License
along with OPM. If not, see .
*/
#ifndef OPM_STANDARDWELL_IMPL_HEADER_INCLUDED
#define OPM_STANDARDWELL_IMPL_HEADER_INCLUDED
// Improve IDE experience
#ifndef OPM_STANDARDWELL_HEADER_INCLUDED
#include
#include
#endif
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
#include
namespace Opm
{
template
StandardWell::
StandardWell(const Well& well,
const ParallelWellInfo& pw_info,
const int time_step,
const ModelParameters& param,
const RateConverterType& rate_converter,
const int pvtRegionIdx,
const int num_components,
const int num_phases,
const int index_of_well,
const std::vector>& perf_data)
: Base(well, pw_info, time_step, param, rate_converter, pvtRegionIdx, num_components, num_phases, index_of_well, perf_data)
, StdWellEval(static_cast&>(*this))
, regularize_(false)
{
assert(this->num_components_ == numWellConservationEq);
}
template
void
StandardWell::
init(const PhaseUsage* phase_usage_arg,
const std::vector& depth_arg,
const Scalar gravity_arg,
const std::vector< Scalar >& B_avg,
const bool changed_to_open_this_step)
{
Base::init(phase_usage_arg, depth_arg, gravity_arg, B_avg, changed_to_open_this_step);
this->StdWellEval::init(this->perf_depth_, depth_arg, Base::has_polymermw);
}
template
template
void
StandardWell::
computePerfRate(const IntensiveQuantities& intQuants,
const std::vector& mob,
const Value& bhp,
const std::vector& Tw,
const int perf,
const bool allow_cf,
std::vector& cq_s,
PerforationRates& perf_rates,
DeferredLogger& deferred_logger) const
{
auto obtain = [this](const Eval& value)
{
if constexpr (std::is_same_v) {
static_cast(this); // suppress clang warning
return getValue(value);
} else {
return this->extendEval(value);
}
};
auto obtainN = [](const auto& value)
{
if constexpr (std::is_same_v) {
return getValue(value);
} else {
return value;
}
};
auto zeroElem = [this]()
{
if constexpr (std::is_same_v) {
static_cast(this); // suppress clang warning
return 0.0;
} else {
return Value{this->primary_variables_.numWellEq() + Indices::numEq, 0.0};
}
};
const auto& fs = intQuants.fluidState();
const Value pressure = obtain(this->getPerfCellPressure(fs));
const Value rs = obtain(fs.Rs());
const Value rv = obtain(fs.Rv());
const Value rvw = obtain(fs.Rvw());
const Value rsw = obtain(fs.Rsw());
std::vector b_perfcells_dense(this->numComponents(), zeroElem());
for (unsigned phaseIdx = 0; phaseIdx < FluidSystem::numPhases; ++phaseIdx) {
if (!FluidSystem::phaseIsActive(phaseIdx)) {
continue;
}
const unsigned compIdx = Indices::canonicalToActiveComponentIndex(FluidSystem::solventComponentIndex(phaseIdx));
b_perfcells_dense[compIdx] = obtain(fs.invB(phaseIdx));
}
if constexpr (has_solvent) {
b_perfcells_dense[Indices::contiSolventEqIdx] = obtain(intQuants.solventInverseFormationVolumeFactor());
}
if constexpr (has_zFraction) {
if (this->isInjector()) {
const unsigned gasCompIdx = Indices::canonicalToActiveComponentIndex(FluidSystem::gasCompIdx);
b_perfcells_dense[gasCompIdx] *= (1.0 - this->wsolvent());
b_perfcells_dense[gasCompIdx] += this->wsolvent()*intQuants.zPureInvFormationVolumeFactor().value();
}
}
Value skin_pressure = zeroElem();
if (has_polymermw) {
if (this->isInjector()) {
const int pskin_index = Bhp + 1 + this->numPerfs() + perf;
skin_pressure = obtainN(this->primary_variables_.eval(pskin_index));
}
}
// surface volume fraction of fluids within wellbore
std::vector cmix_s(this->numComponents(), zeroElem());
for (int componentIdx = 0; componentIdx < this->numComponents(); ++componentIdx) {
cmix_s[componentIdx] = obtainN(this->primary_variables_.surfaceVolumeFraction(componentIdx));
}
computePerfRate(mob,
pressure,
bhp,
rs,
rv,
rvw,
rsw,
b_perfcells_dense,
Tw,
perf,
allow_cf,
skin_pressure,
cmix_s,
cq_s,
perf_rates,
deferred_logger);
}
template
template
void
StandardWell::
computePerfRate(const std::vector& mob,
const Value& pressure,
const Value& bhp,
const Value& rs,
const Value& rv,
const Value& rvw,
const Value& rsw,
std::vector& b_perfcells_dense,
const std::vector& Tw,
const int perf,
const bool allow_cf,
const Value& skin_pressure,
const std::vector& cmix_s,
std::vector& cq_s,
PerforationRates& perf_rates,
DeferredLogger& deferred_logger) const
{
// Pressure drawdown (also used to determine direction of flow)
const Value well_pressure = bhp + this->connections_.pressure_diff(perf);
Value drawdown = pressure - well_pressure;
if (this->isInjector()) {
drawdown += skin_pressure;
}
RatioCalculator ratioCalc{
FluidSystem::phaseIsActive(FluidSystem::gasPhaseIdx)
? Indices::canonicalToActiveComponentIndex(FluidSystem::gasCompIdx)
: -1,
FluidSystem::phaseIsActive(FluidSystem::oilPhaseIdx)
? Indices::canonicalToActiveComponentIndex(FluidSystem::oilCompIdx)
: -1,
FluidSystem::phaseIsActive(FluidSystem::waterPhaseIdx)
? Indices::canonicalToActiveComponentIndex(FluidSystem::waterCompIdx)
: -1,
this->name()
};
// producing perforations
if (drawdown > 0) {
// Do nothing if crossflow is not allowed
if (!allow_cf && this->isInjector()) {
return;
}
// compute component volumetric rates at standard conditions
for (int componentIdx = 0; componentIdx < this->numComponents(); ++componentIdx) {
const Value cq_p = - Tw[componentIdx] * (mob[componentIdx] * drawdown);
cq_s[componentIdx] = b_perfcells_dense[componentIdx] * cq_p;
}
if (FluidSystem::phaseIsActive(FluidSystem::oilPhaseIdx) &&
FluidSystem::phaseIsActive(FluidSystem::gasPhaseIdx))
{
ratioCalc.gasOilPerfRateProd(cq_s, perf_rates, rv, rs, rvw,
FluidSystem::phaseIsActive(FluidSystem::waterPhaseIdx),
this->isProducer());
} else if (FluidSystem::phaseIsActive(FluidSystem::waterPhaseIdx) &&
FluidSystem::phaseIsActive(FluidSystem::gasPhaseIdx))
{
ratioCalc.gasWaterPerfRateProd(cq_s, perf_rates, rvw, rsw, this->isProducer());
}
} else {
// Do nothing if crossflow is not allowed
if (!allow_cf && this->isProducer()) {
return;
}
// Using total mobilities
Value total_mob_dense = mob[0];
for (int componentIdx = 1; componentIdx < this->numComponents(); ++componentIdx) {
total_mob_dense += mob[componentIdx];
}
// compute volume ratio between connection at standard conditions
Value volumeRatio = bhp * 0.0; // initialize it with the correct type
if (FluidSystem::enableVaporizedWater() && FluidSystem::enableDissolvedGasInWater()) {
ratioCalc.disOilVapWatVolumeRatio(volumeRatio, rvw, rsw, pressure,
cmix_s, b_perfcells_dense, deferred_logger);
// DISGASW only supported for gas-water CO2STORE/H2STORE case
// and the simulator will throw long before it reach to this point in the code
// For blackoil support of DISGASW we need to add the oil component here
assert(FluidSystem::phaseIsActive(FluidSystem::gasPhaseIdx));
assert(FluidSystem::phaseIsActive(FluidSystem::waterPhaseIdx));
assert(!FluidSystem::phaseIsActive(FluidSystem::oilPhaseIdx));
} else {
if (FluidSystem::phaseIsActive(FluidSystem::waterPhaseIdx)) {
const unsigned waterCompIdx = Indices::canonicalToActiveComponentIndex(FluidSystem::waterCompIdx);
volumeRatio += cmix_s[waterCompIdx] / b_perfcells_dense[waterCompIdx];
}
if constexpr (Indices::enableSolvent) {
volumeRatio += cmix_s[Indices::contiSolventEqIdx] / b_perfcells_dense[Indices::contiSolventEqIdx];
}
if (FluidSystem::phaseIsActive(FluidSystem::oilPhaseIdx) &&
FluidSystem::phaseIsActive(FluidSystem::gasPhaseIdx))
{
ratioCalc.gasOilVolumeRatio(volumeRatio, rv, rs, pressure,
cmix_s, b_perfcells_dense,
deferred_logger);
} else {
if (FluidSystem::phaseIsActive(FluidSystem::oilPhaseIdx)) {
const unsigned oilCompIdx = Indices::canonicalToActiveComponentIndex(FluidSystem::oilCompIdx);
volumeRatio += cmix_s[oilCompIdx] / b_perfcells_dense[oilCompIdx];
}
if (FluidSystem::phaseIsActive(FluidSystem::gasPhaseIdx)) {
const unsigned gasCompIdx = Indices::canonicalToActiveComponentIndex(FluidSystem::gasCompIdx);
volumeRatio += cmix_s[gasCompIdx] / b_perfcells_dense[gasCompIdx];
}
}
}
// injecting connections total volumerates at standard conditions
for (int componentIdx = 0; componentIdx < this->numComponents(); ++componentIdx) {
const Value cqt_i = - Tw[componentIdx] * (total_mob_dense * drawdown);
Value cqt_is = cqt_i / volumeRatio;
cq_s[componentIdx] = cmix_s[componentIdx] * cqt_is;
}
// calculating the perforation solution gas rate and solution oil rates
if (this->isProducer()) {
if (FluidSystem::phaseIsActive(FluidSystem::oilPhaseIdx) &&
FluidSystem::phaseIsActive(FluidSystem::gasPhaseIdx))
{
ratioCalc.gasOilPerfRateInj(cq_s, perf_rates,
rv, rs, pressure, rvw,
FluidSystem::phaseIsActive(FluidSystem::waterPhaseIdx),
deferred_logger);
}
if (FluidSystem::phaseIsActive(FluidSystem::gasPhaseIdx) &&
FluidSystem::phaseIsActive(FluidSystem::waterPhaseIdx))
{
//no oil
ratioCalc.gasWaterPerfRateInj(cq_s, perf_rates, rvw, rsw,
pressure, deferred_logger);
}
}
}
}
template
void
StandardWell::
assembleWellEqWithoutIteration(const Simulator& simulator,
const double dt,
const Well::InjectionControls& inj_controls,
const Well::ProductionControls& prod_controls,
WellState& well_state,
const GroupState& group_state,
DeferredLogger& deferred_logger)
{
// TODO: only_wells should be put back to save some computation
// for example, the matrices B C does not need to update if only_wells
if (!this->isOperableAndSolvable() && !this->wellIsStopped()) return;
// clear all entries
this->linSys_.clear();
assembleWellEqWithoutIterationImpl(simulator, dt, inj_controls,
prod_controls, well_state,
group_state, deferred_logger);
}
template
void
StandardWell::
assembleWellEqWithoutIterationImpl(const Simulator& simulator,
const double dt,
const Well::InjectionControls& inj_controls,
const Well::ProductionControls& prod_controls,
WellState& well_state,
const GroupState& group_state,
DeferredLogger& deferred_logger)
{
// try to regularize equation if the well does not converge
const Scalar regularization_factor = this->regularize_? this->param_.regularization_factor_wells_ : 1.0;
const Scalar volume = 0.1 * unit::cubic(unit::feet) * regularization_factor;
auto& ws = well_state.well(this->index_of_well_);
ws.phase_mixing_rates.fill(0.0);
const int np = this->number_of_phases_;
std::vector connectionRates = this->connectionRates_; // Copy to get right size.
auto& perf_data = ws.perf_data;
auto& perf_rates = perf_data.phase_rates;
for (int perf = 0; perf < this->number_of_perforations_; ++perf) {
// Calculate perforation quantities.
std::vector cq_s(this->num_components_, {this->primary_variables_.numWellEq() + Indices::numEq, 0.0});
EvalWell water_flux_s{this->primary_variables_.numWellEq() + Indices::numEq, 0.0};
EvalWell cq_s_zfrac_effective{this->primary_variables_.numWellEq() + Indices::numEq, 0.0};
calculateSinglePerf(simulator, perf, well_state, connectionRates,
cq_s, water_flux_s, cq_s_zfrac_effective, deferred_logger);
// Equation assembly for this perforation.
if constexpr (has_polymer && Base::has_polymermw) {
if (this->isInjector()) {
handleInjectivityEquations(simulator, well_state, perf,
water_flux_s, deferred_logger);
}
}
for (int componentIdx = 0; componentIdx < this->num_components_; ++componentIdx) {
// the cq_s entering mass balance equations need to consider the efficiency factors.
const EvalWell cq_s_effective = cq_s[componentIdx] * this->well_efficiency_factor_;
connectionRates[perf][componentIdx] = Base::restrictEval(cq_s_effective);
StandardWellAssemble(*this).
assemblePerforationEq(cq_s_effective,
componentIdx,
perf,
this->primary_variables_.numWellEq(),
this->linSys_);
// Store the perforation phase flux for later usage.
if (has_solvent && componentIdx == Indices::contiSolventEqIdx) {
auto& perf_rate_solvent = perf_data.solvent_rates;
perf_rate_solvent[perf] = cq_s[componentIdx].value();
} else {
perf_rates[perf*np + this->modelCompIdxToFlowCompIdx(componentIdx)] = cq_s[componentIdx].value();
}
}
if constexpr (has_zFraction) {
StandardWellAssemble(*this).
assembleZFracEq(cq_s_zfrac_effective,
perf,
this->primary_variables_.numWellEq(),
this->linSys_);
}
}
// Update the connection
this->connectionRates_ = connectionRates;
// Accumulate dissolved gas and vaporized oil flow rates across all
// ranks sharing this well (this->index_of_well_).
{
const auto& comm = this->parallel_well_info_.communication();
comm.sum(ws.phase_mixing_rates.data(), ws.phase_mixing_rates.size());
}
// accumulate resWell_ and duneD_ in parallel to get effects of all perforations (might be distributed)
this->linSys_.sumDistributed(this->parallel_well_info_.communication());
// add vol * dF/dt + Q to the well equations;
for (int componentIdx = 0; componentIdx < numWellConservationEq; ++componentIdx) {
// TODO: following the development in MSW, we need to convert the volume of the wellbore to be surface volume
// since all the rates are under surface condition
EvalWell resWell_loc(this->primary_variables_.numWellEq() + Indices::numEq, 0.0);
if (FluidSystem::numActivePhases() > 1) {
assert(dt > 0);
resWell_loc += (this->primary_variables_.surfaceVolumeFraction(componentIdx) -
this->F0_[componentIdx]) * volume / dt;
}
resWell_loc -= this->primary_variables_.getQs(componentIdx) * this->well_efficiency_factor_;
StandardWellAssemble(*this).
assembleSourceEq(resWell_loc,
componentIdx,
this->primary_variables_.numWellEq(),
this->linSys_);
}
const auto& summaryState = simulator.vanguard().summaryState();
const Schedule& schedule = simulator.vanguard().schedule();
const bool stopped_or_zero_target = this->stoppedOrZeroRateTarget(simulator, well_state, deferred_logger);
StandardWellAssemble(*this).
assembleControlEq(well_state, group_state,
schedule, summaryState,
inj_controls, prod_controls,
this->primary_variables_,
this->connections_.rho(),
this->linSys_,
stopped_or_zero_target,
deferred_logger);
// do the local inversion of D.
try {
this->linSys_.invert();
} catch( ... ) {
OPM_DEFLOG_PROBLEM(NumericalProblem, "Error when inverting local well equations for well " + name(), deferred_logger);
}
}
template
void
StandardWell::
calculateSinglePerf(const Simulator& simulator,
const int perf,
WellState& well_state,
std::vector& connectionRates,
std::vector& cq_s,
EvalWell& water_flux_s,
EvalWell& cq_s_zfrac_effective,
DeferredLogger& deferred_logger) const
{
const bool allow_cf = this->getAllowCrossFlow() || openCrossFlowAvoidSingularity(simulator);
const EvalWell& bhp = this->primary_variables_.eval(Bhp);
const int cell_idx = this->well_cells_[perf];
const auto& intQuants = simulator.model().intensiveQuantities(cell_idx, /*timeIdx=*/ 0);
std::vector mob(this->num_components_, {this->primary_variables_.numWellEq() + Indices::numEq, 0.});
getMobility(simulator, perf, mob, deferred_logger);
PerforationRates perf_rates;
Scalar trans_mult = simulator.problem().template wellTransMultiplier(intQuants, cell_idx);
const auto& wellstate_nupcol = simulator.problem().wellModel().nupcolWellState().well(this->index_of_well_);
const std::vector Tw = this->wellIndex(perf, intQuants, trans_mult, wellstate_nupcol);
computePerfRate(intQuants, mob, bhp, Tw, perf, allow_cf,
cq_s, perf_rates, deferred_logger);
auto& ws = well_state.well(this->index_of_well_);
auto& perf_data = ws.perf_data;
if constexpr (has_polymer && Base::has_polymermw) {
if (this->isInjector()) {
// Store the original water flux computed from the reservoir quantities.
// It will be required to assemble the injectivity equations.
const unsigned water_comp_idx = Indices::canonicalToActiveComponentIndex(FluidSystem::waterCompIdx);
water_flux_s = cq_s[water_comp_idx];
// Modify the water flux for the rest of this function to depend directly on the
// local water velocity primary variable.
handleInjectivityRate(simulator, perf, cq_s);
}
}
// updating the solution gas rate and solution oil rate
if (this->isProducer()) {
ws.phase_mixing_rates[ws.dissolved_gas] += perf_rates.dis_gas;
ws.phase_mixing_rates[ws.dissolved_gas_in_water] += perf_rates.dis_gas_in_water;
ws.phase_mixing_rates[ws.vaporized_oil] += perf_rates.vap_oil;
ws.phase_mixing_rates[ws.vaporized_water] += perf_rates.vap_wat;
perf_data.phase_mixing_rates[perf][ws.dissolved_gas] = perf_rates.dis_gas;
perf_data.phase_mixing_rates[perf][ws.dissolved_gas_in_water] = perf_rates.dis_gas_in_water;
perf_data.phase_mixing_rates[perf][ws.vaporized_oil] = perf_rates.vap_oil;
perf_data.phase_mixing_rates[perf][ws.vaporized_water] = perf_rates.vap_wat;
}
if constexpr (has_energy) {
connectionRates[perf][Indices::contiEnergyEqIdx] =
connectionRateEnergy(simulator.problem().maxOilSaturation(cell_idx),
cq_s, intQuants, deferred_logger);
}
if constexpr (has_polymer) {
std::variant polymerConcentration;
if (this->isInjector()) {
polymerConcentration = this->wpolymer();
} else {
polymerConcentration = this->extendEval(intQuants.polymerConcentration() *
intQuants.polymerViscosityCorrection());
}
[[maybe_unused]] EvalWell cq_s_poly;
std::tie(connectionRates[perf][Indices::contiPolymerEqIdx],
cq_s_poly) =
this->connections_.connectionRatePolymer(perf_data.polymer_rates[perf],
cq_s, polymerConcentration);
if constexpr (Base::has_polymermw) {
updateConnectionRatePolyMW(cq_s_poly, intQuants, well_state,
perf, connectionRates, deferred_logger);
}
}
if constexpr (has_foam) {
std::variant foamConcentration;
if (this->isInjector()) {
foamConcentration = this->wfoam();
} else {
foamConcentration = this->extendEval(intQuants.foamConcentration());
}
connectionRates[perf][Indices::contiFoamEqIdx] =
this->connections_.connectionRateFoam(cq_s, foamConcentration,
FoamModule::transportPhase(),
deferred_logger);
}
if constexpr (has_zFraction) {
std::variant> solventConcentration;
if (this->isInjector()) {
solventConcentration = this->wsolvent();
} else {
solventConcentration = std::array{this->extendEval(intQuants.xVolume()),
this->extendEval(intQuants.yVolume())};
}
std::tie(connectionRates[perf][Indices::contiZfracEqIdx],
cq_s_zfrac_effective) =
this->connections_.connectionRatezFraction(perf_data.solvent_rates[perf],
perf_rates.dis_gas, cq_s,
solventConcentration);
}
if constexpr (has_brine) {
std::variant saltConcentration;
if (this->isInjector()) {
saltConcentration = this->wsalt();
} else {
saltConcentration = this->extendEval(intQuants.fluidState().saltConcentration());
}
connectionRates[perf][Indices::contiBrineEqIdx] =
this->connections_.connectionRateBrine(perf_data.brine_rates[perf],
perf_rates.vap_wat, cq_s,
saltConcentration);
}
if constexpr (has_micp) {
std::variant microbialConcentration;
std::variant oxygenConcentration;
std::variant ureaConcentration;
if (this->isInjector()) {
microbialConcentration = this->wmicrobes();
oxygenConcentration = this->woxygen();
ureaConcentration = this->wurea();
} else {
microbialConcentration = this->extendEval(intQuants.microbialConcentration());
oxygenConcentration = this->extendEval(intQuants.oxygenConcentration());
ureaConcentration = this->extendEval(intQuants.ureaConcentration());
}
std::tie(connectionRates[perf][Indices::contiMicrobialEqIdx],
connectionRates[perf][Indices::contiOxygenEqIdx],
connectionRates[perf][Indices::contiUreaEqIdx]) =
this->connections_.connectionRatesMICP(cq_s,
microbialConcentration,
oxygenConcentration,
ureaConcentration);
}
// Store the perforation pressure for later usage.
perf_data.pressure[perf] = ws.bhp + this->connections_.pressure_diff(perf);
}
template
template
void
StandardWell::
getMobility(const Simulator& simulator,
const int perf,
std::vector& mob,
DeferredLogger& deferred_logger) const
{
auto obtain = [this](const Eval& value)
{
if constexpr (std::is_same_v) {
static_cast(this); // suppress clang warning
return getValue(value);
} else {
return this->extendEval(value);
}
};
WellInterface::getMobility(simulator, perf, mob,
obtain, deferred_logger);
// modify the water mobility if polymer is present
if constexpr (has_polymer) {
if (!FluidSystem::phaseIsActive(FluidSystem::waterPhaseIdx)) {
OPM_DEFLOG_THROW(std::runtime_error, "Water is required when polymer is active", deferred_logger);
}
// for the cases related to polymer molecular weight, we assume fully mixing
// as a result, the polymer and water share the same viscosity
if constexpr (!Base::has_polymermw) {
if constexpr (std::is_same_v) {
std::vector mob_eval(this->num_components_, {this->primary_variables_.numWellEq() + Indices::numEq, 0.});
for (std::size_t i = 0; i < mob.size(); ++i) {
mob_eval[i].setValue(mob[i]);
}
updateWaterMobilityWithPolymer(simulator, perf, mob_eval, deferred_logger);
for (std::size_t i = 0; i < mob.size(); ++i) {
mob[i] = getValue(mob_eval[i]);
}
} else {
updateWaterMobilityWithPolymer(simulator, perf, mob, deferred_logger);
}
}
}
// if the injecting well has WINJMULT setup, we update the mobility accordingly
if (this->isInjector() && this->well_ecl_.getInjMultMode() != Well::InjMultMode::NONE) {
const Scalar bhp = this->primary_variables_.value(Bhp);
const Scalar perf_press = bhp + this->connections_.pressure_diff(perf);
const Scalar multiplier = this->getInjMult(perf, bhp, perf_press, deferred_logger);
for (std::size_t i = 0; i < mob.size(); ++i) {
mob[i] *= multiplier;
}
}
}
template
void
StandardWell::
updateWellState(const Simulator& simulator,
const BVectorWell& dwells,
WellState& well_state,
DeferredLogger& deferred_logger)
{
if (!this->isOperableAndSolvable() && !this->wellIsStopped()) return;
const bool stop_or_zero_rate_target = this->stoppedOrZeroRateTarget(simulator, well_state, deferred_logger);
updatePrimaryVariablesNewton(dwells, stop_or_zero_rate_target, deferred_logger);
const auto& summary_state = simulator.vanguard().summaryState();
updateWellStateFromPrimaryVariables(well_state, summary_state, deferred_logger);
Base::calculateReservoirRates(simulator.vanguard().eclState().runspec().co2Storage(), well_state.well(this->index_of_well_));
}
template
void
StandardWell::
updatePrimaryVariablesNewton(const BVectorWell& dwells,
const bool stop_or_zero_rate_target,
DeferredLogger& deferred_logger)
{
const Scalar dFLimit = this->param_.dwell_fraction_max_;
const Scalar dBHPLimit = this->param_.dbhp_max_rel_;
this->primary_variables_.updateNewton(dwells, stop_or_zero_rate_target, dFLimit, dBHPLimit, deferred_logger);
// for the water velocity and skin pressure
if constexpr (Base::has_polymermw) {
this->primary_variables_.updateNewtonPolyMW(dwells);
}
this->primary_variables_.checkFinite(deferred_logger);
}
template
void
StandardWell::
updateWellStateFromPrimaryVariables(WellState& well_state,
const SummaryState& summary_state,
DeferredLogger& deferred_logger) const
{
this->StdWellEval::updateWellStateFromPrimaryVariables(well_state, summary_state, deferred_logger);
// other primary variables related to polymer injectivity study
if constexpr (Base::has_polymermw) {
this->primary_variables_.copyToWellStatePolyMW(well_state);
}
}
template
void
StandardWell::
updateIPR(const Simulator& simulator, DeferredLogger& deferred_logger) const
{
// TODO: not handling solvent related here for now
// initialize all the values to be zero to begin with
std::fill(this->ipr_a_.begin(), this->ipr_a_.end(), 0.);
std::fill(this->ipr_b_.begin(), this->ipr_b_.end(), 0.);
for (int perf = 0; perf < this->number_of_perforations_; ++perf) {
std::vector mob(this->num_components_, 0.0);
getMobility(simulator, perf, mob, deferred_logger);
const int cell_idx = this->well_cells_[perf];
const auto& int_quantities = simulator.model().intensiveQuantities(cell_idx, /*timeIdx=*/ 0);
const auto& fs = int_quantities.fluidState();
// the pressure of the reservoir grid block the well connection is in
Scalar p_r = this->getPerfCellPressure(fs).value();
// calculating the b for the connection
std::vector b_perf(this->num_components_);
for (std::size_t phase = 0; phase < FluidSystem::numPhases; ++phase) {
if (!FluidSystem::phaseIsActive(phase)) {
continue;
}
const unsigned comp_idx = Indices::canonicalToActiveComponentIndex(FluidSystem::solventComponentIndex(phase));
b_perf[comp_idx] = fs.invB(phase).value();
}
if constexpr (has_solvent) {
b_perf[Indices::contiSolventEqIdx] = int_quantities.solventInverseFormationVolumeFactor().value();
}
// the pressure difference between the connection and BHP
const Scalar h_perf = this->connections_.pressure_diff(perf);
const Scalar pressure_diff = p_r - h_perf;
// Let us add a check, since the pressure is calculated based on zero value BHP
// it should not be negative anyway. If it is negative, we might need to re-formulate
// to taking into consideration the crossflow here.
if ( (this->isProducer() && pressure_diff < 0.) || (this->isInjector() && pressure_diff > 0.) ) {
deferred_logger.debug("CROSSFLOW_IPR",
"cross flow found when updateIPR for well " + name()
+ " . The connection is ignored in IPR calculations");
// we ignore these connections for now
continue;
}
// the well index associated with the connection
Scalar trans_mult = simulator.problem().template wellTransMultiplier(int_quantities, cell_idx);
const auto& wellstate_nupcol = simulator.problem().wellModel().nupcolWellState().well(this->index_of_well_);
const std::vector tw_perf = this->wellIndex(perf,
int_quantities,
trans_mult,
wellstate_nupcol);
std::vector ipr_a_perf(this->ipr_a_.size());
std::vector ipr_b_perf(this->ipr_b_.size());
for (int comp_idx = 0; comp_idx < this->num_components_; ++comp_idx) {
const Scalar tw_mob = tw_perf[comp_idx] * mob[comp_idx] * b_perf[comp_idx];
ipr_a_perf[comp_idx] += tw_mob * pressure_diff;
ipr_b_perf[comp_idx] += tw_mob;
}
// we need to handle the rs and rv when both oil and gas are present
if (FluidSystem::phaseIsActive(FluidSystem::oilPhaseIdx) && FluidSystem::phaseIsActive(FluidSystem::gasPhaseIdx)) {
const unsigned oil_comp_idx = Indices::canonicalToActiveComponentIndex(FluidSystem::oilCompIdx);
const unsigned gas_comp_idx = Indices::canonicalToActiveComponentIndex(FluidSystem::gasCompIdx);
const Scalar rs = (fs.Rs()).value();
const Scalar rv = (fs.Rv()).value();
const Scalar dis_gas_a = rs * ipr_a_perf[oil_comp_idx];
const Scalar vap_oil_a = rv * ipr_a_perf[gas_comp_idx];
ipr_a_perf[gas_comp_idx] += dis_gas_a;
ipr_a_perf[oil_comp_idx] += vap_oil_a;
const Scalar dis_gas_b = rs * ipr_b_perf[oil_comp_idx];
const Scalar vap_oil_b = rv * ipr_b_perf[gas_comp_idx];
ipr_b_perf[gas_comp_idx] += dis_gas_b;
ipr_b_perf[oil_comp_idx] += vap_oil_b;
}
for (std::size_t comp_idx = 0; comp_idx < ipr_a_perf.size(); ++comp_idx) {
this->ipr_a_[comp_idx] += ipr_a_perf[comp_idx];
this->ipr_b_[comp_idx] += ipr_b_perf[comp_idx];
}
}
this->parallel_well_info_.communication().sum(this->ipr_a_.data(), this->ipr_a_.size());
this->parallel_well_info_.communication().sum(this->ipr_b_.data(), this->ipr_b_.size());
}
template
void
StandardWell::
updateIPRImplicit(const Simulator& simulator,
WellState& well_state,
DeferredLogger& deferred_logger)
{
// Compute IPR based on *converged* well-equation:
// For a component rate r the derivative dr/dbhp is obtained by
// dr/dbhp = - (partial r/partial x) * inv(partial Eq/partial x) * (partial Eq/partial bhp_target)
// where Eq(x)=0 is the well equation setup with bhp control and primary variables x
// We shouldn't have zero rates at this stage, but check
bool zero_rates;
auto rates = well_state.well(this->index_of_well_).surface_rates;
zero_rates = true;
for (std::size_t p = 0; p < rates.size(); ++p) {
zero_rates &= rates[p] == 0.0;
}
auto& ws = well_state.well(this->index_of_well_);
if (zero_rates) {
const auto msg = fmt::format("updateIPRImplicit: Well {} has zero rate, IPRs might be problematic", this->name());
deferred_logger.debug(msg);
/*
// could revert to standard approach here:
updateIPR(simulator, deferred_logger);
for (int comp_idx = 0; comp_idx < this->num_components_; ++comp_idx){
const int idx = this->modelCompIdxToFlowCompIdx(comp_idx);
ws.implicit_ipr_a[idx] = this->ipr_a_[comp_idx];
ws.implicit_ipr_b[idx] = this->ipr_b_[comp_idx];
}
return;
*/
}
const auto& group_state = simulator.problem().wellModel().groupState();
std::fill(ws.implicit_ipr_a.begin(), ws.implicit_ipr_a.end(), 0.);
std::fill(ws.implicit_ipr_b.begin(), ws.implicit_ipr_b.end(), 0.);
auto inj_controls = Well::InjectionControls(0);
auto prod_controls = Well::ProductionControls(0);
prod_controls.addControl(Well::ProducerCMode::BHP);
prod_controls.bhp_limit = well_state.well(this->index_of_well_).bhp;
// Set current control to bhp, and bhp value in state, modify bhp limit in control object.
const auto cmode = ws.production_cmode;
ws.production_cmode = Well::ProducerCMode::BHP;
const double dt = simulator.timeStepSize();
assembleWellEqWithoutIteration(simulator, dt, inj_controls, prod_controls, well_state, group_state, deferred_logger);
const size_t nEq = this->primary_variables_.numWellEq();
BVectorWell rhs(1);
rhs[0].resize(nEq);
// rhs = 0 except -1 for control eq
for (size_t i=0; i < nEq; ++i){
rhs[0][i] = 0.0;
}
rhs[0][Bhp] = -1.0;
BVectorWell x_well(1);
x_well[0].resize(nEq);
this->linSys_.solve(rhs, x_well);
for (int comp_idx = 0; comp_idx < this->num_components_; ++comp_idx){
EvalWell comp_rate = this->primary_variables_.getQs(comp_idx);
const int idx = this->modelCompIdxToFlowCompIdx(comp_idx);
for (size_t pvIdx = 0; pvIdx < nEq; ++pvIdx) {
// well primary variable derivatives in EvalWell start at position Indices::numEq
ws.implicit_ipr_b[idx] -= x_well[0][pvIdx]*comp_rate.derivative(pvIdx+Indices::numEq);
}
ws.implicit_ipr_a[idx] = ws.implicit_ipr_b[idx]*ws.bhp - comp_rate.value();
}
// reset cmode
ws.production_cmode = cmode;
}
template
void
StandardWell::
checkOperabilityUnderBHPLimit(const WellState& well_state,
const Simulator& simulator,
DeferredLogger& deferred_logger)
{
const auto& summaryState = simulator.vanguard().summaryState();
const Scalar bhp_limit = WellBhpThpCalculator(*this).mostStrictBhpFromBhpLimits(summaryState);
// Crude but works: default is one atmosphere.
// TODO: a better way to detect whether the BHP is defaulted or not
const bool bhp_limit_not_defaulted = bhp_limit > 1.5 * unit::barsa;
if ( bhp_limit_not_defaulted || !this->wellHasTHPConstraints(summaryState) ) {
// if the BHP limit is not defaulted or the well does not have a THP limit
// we need to check the BHP limit
Scalar total_ipr_mass_rate = 0.0;
for (unsigned phaseIdx = 0; phaseIdx < FluidSystem::numPhases; ++phaseIdx)
{
if (!FluidSystem::phaseIsActive(phaseIdx)) {
continue;
}
const unsigned compIdx = Indices::canonicalToActiveComponentIndex(FluidSystem::solventComponentIndex(phaseIdx));
const Scalar ipr_rate = this->ipr_a_[compIdx] - this->ipr_b_[compIdx] * bhp_limit;
const Scalar rho = FluidSystem::referenceDensity( phaseIdx, Base::pvtRegionIdx() );
total_ipr_mass_rate += ipr_rate * rho;
}
if ( (this->isProducer() && total_ipr_mass_rate < 0.) || (this->isInjector() && total_ipr_mass_rate > 0.) ) {
this->operability_status_.operable_under_only_bhp_limit = false;
}
// checking whether running under BHP limit will violate THP limit
if (this->operability_status_.operable_under_only_bhp_limit && this->wellHasTHPConstraints(summaryState)) {
// option 1: calculate well rates based on the BHP limit.
// option 2: stick with the above IPR curve
// we use IPR here
std::vector well_rates_bhp_limit;
computeWellRatesWithBhp(simulator, bhp_limit, well_rates_bhp_limit, deferred_logger);
this->adaptRatesForVFP(well_rates_bhp_limit);
const Scalar thp_limit = this->getTHPConstraint(summaryState);
const Scalar thp = WellBhpThpCalculator(*this).calculateThpFromBhp(well_rates_bhp_limit,
bhp_limit,
this->connections_.rho(),
this->getALQ(well_state),
thp_limit,
deferred_logger);
if ( (this->isProducer() && thp < thp_limit) || (this->isInjector() && thp > thp_limit) ) {
this->operability_status_.obey_thp_limit_under_bhp_limit = false;
}
}
} else {
// defaulted BHP and there is a THP constraint
// default BHP limit is about 1 atm.
// when applied the hydrostatic pressure correction dp,
// most likely we get a negative value (bhp + dp)to search in the VFP table,
// which is not desirable.
// we assume we can operate under defaulted BHP limit and will violate the THP limit
// when operating under defaulted BHP limit.
this->operability_status_.operable_under_only_bhp_limit = true;
this->operability_status_.obey_thp_limit_under_bhp_limit = false;
}
}
template
void
StandardWell::
checkOperabilityUnderTHPLimit(const Simulator& simulator,
const WellState& well_state,
DeferredLogger& deferred_logger)
{
const auto& summaryState = simulator.vanguard().summaryState();
const auto obtain_bhp = this->isProducer() ? computeBhpAtThpLimitProd(well_state, simulator, summaryState, deferred_logger)
: computeBhpAtThpLimitInj(simulator, summaryState, deferred_logger);
if (obtain_bhp) {
this->operability_status_.can_obtain_bhp_with_thp_limit = true;
const Scalar bhp_limit = WellBhpThpCalculator(*this).mostStrictBhpFromBhpLimits(summaryState);
this->operability_status_.obey_bhp_limit_with_thp_limit = this->isProducer() ?
*obtain_bhp >= bhp_limit : *obtain_bhp <= bhp_limit ;
const Scalar thp_limit = this->getTHPConstraint(summaryState);
if (this->isProducer() && *obtain_bhp < thp_limit) {
const std::string msg = " obtained bhp " + std::to_string(unit::convert::to(*obtain_bhp, unit::barsa))
+ " bars is SMALLER than thp limit "
+ std::to_string(unit::convert::to(thp_limit, unit::barsa))
+ " bars as a producer for well " + name();
deferred_logger.debug(msg);
}
else if (this->isInjector() && *obtain_bhp > thp_limit) {
const std::string msg = " obtained bhp " + std::to_string(unit::convert::to(*obtain_bhp, unit::barsa))
+ " bars is LARGER than thp limit "
+ std::to_string(unit::convert::to(thp_limit, unit::barsa))
+ " bars as a injector for well " + name();
deferred_logger.debug(msg);
}
} else {
this->operability_status_.can_obtain_bhp_with_thp_limit = false;
this->operability_status_.obey_bhp_limit_with_thp_limit = false;
if (!this->wellIsStopped()) {
const Scalar thp_limit = this->getTHPConstraint(summaryState);
deferred_logger.debug(" could not find bhp value at thp limit "
+ std::to_string(unit::convert::to(thp_limit, unit::barsa))
+ " bar for well " + name() + ", the well might need to be closed ");
}
}
}
template
bool
StandardWell::
allDrawDownWrongDirection(const Simulator& simulator) const
{
bool all_drawdown_wrong_direction = true;
for (int perf = 0; perf < this->number_of_perforations_; ++perf) {
const int cell_idx = this->well_cells_[perf];
const auto& intQuants = simulator.model().intensiveQuantities(cell_idx, /*timeIdx=*/0);
const auto& fs = intQuants.fluidState();
const Scalar pressure = this->getPerfCellPressure(fs).value();
const Scalar bhp = this->primary_variables_.eval(Bhp).value();
// Pressure drawdown (also used to determine direction of flow)
const Scalar well_pressure = bhp + this->connections_.pressure_diff(perf);
const Scalar drawdown = pressure - well_pressure;
// for now, if there is one perforation can produce/inject in the correct
// direction, we consider this well can still produce/inject.
// TODO: it can be more complicated than this to cause wrong-signed rates
if ( (drawdown < 0. && this->isInjector()) ||
(drawdown > 0. && this->isProducer()) ) {
all_drawdown_wrong_direction = false;
break;
}
}
const auto& comm = this->parallel_well_info_.communication();
if (comm.size() > 1)
{
all_drawdown_wrong_direction =
(comm.min(all_drawdown_wrong_direction ? 1 : 0) == 1);
}
return all_drawdown_wrong_direction;
}
template
bool
StandardWell::
canProduceInjectWithCurrentBhp(const Simulator& simulator,
const WellState& well_state,
DeferredLogger& deferred_logger)
{
const Scalar bhp = well_state.well(this->index_of_well_).bhp;
std::vector well_rates;
computeWellRatesWithBhp(simulator, bhp, well_rates, deferred_logger);
const Scalar sign = (this->isProducer()) ? -1. : 1.;
const Scalar threshold = sign * std::numeric_limits::min();
bool can_produce_inject = false;
for (const auto value : well_rates) {
if (this->isProducer() && value < threshold) {
can_produce_inject = true;
break;
} else if (this->isInjector() && value > threshold) {
can_produce_inject = true;
break;
}
}
if (!can_produce_inject) {
deferred_logger.debug(" well " + name() + " CANNOT produce or inejct ");
}
return can_produce_inject;
}
template
bool
StandardWell::
openCrossFlowAvoidSingularity(const Simulator& simulator) const
{
return !this->getAllowCrossFlow() && allDrawDownWrongDirection(simulator);
}
template
typename StandardWell::WellConnectionProps
StandardWell::
computePropertiesForWellConnectionPressures(const Simulator& simulator,
const WellState& well_state) const
{
auto prop_func = typename StdWellEval::StdWellConnections::PressurePropertyFunctions {
// getTemperature
[&model = simulator.model()](int cell_idx, int phase_idx)
{
return model.intensiveQuantities(cell_idx, /* time_idx = */ 0)
.fluidState().temperature(phase_idx).value();
},
// getSaltConcentration
[&model = simulator.model()](int cell_idx)
{
return model.intensiveQuantities(cell_idx, /* time_idx = */ 0)
.fluidState().saltConcentration().value();
},
// getPvtRegionIdx
[&model = simulator.model()](int cell_idx)
{
return model.intensiveQuantities(cell_idx, /* time_idx = */ 0)
.fluidState().pvtRegionIndex();
}
};
if constexpr (Indices::enableSolvent) {
prop_func.solventInverseFormationVolumeFactor =
[&model = simulator.model()](int cell_idx)
{
return model.intensiveQuantities(cell_idx, /* time_idx = */ 0)
.solventInverseFormationVolumeFactor().value();
};
prop_func.solventRefDensity = [&model = simulator.model()](int cell_idx)
{
return model.intensiveQuantities(cell_idx, /* time_idx = */ 0)
.solventRefDensity();
};
}
return this->connections_.computePropertiesForPressures(well_state, prop_func);
}
template
ConvergenceReport
StandardWell::
getWellConvergence(const Simulator& simulator,
const WellState& well_state,
const std::vector& B_avg,
DeferredLogger& deferred_logger,
const bool relax_tolerance) const
{
// the following implementation assume that the polymer is always after the w-o-g phases
// For the polymer, energy and foam cases, there is one more mass balance equations of reservoir than wells
assert((int(B_avg.size()) == this->num_components_) || has_polymer || has_energy || has_foam || has_brine || has_zFraction || has_micp);
Scalar tol_wells = this->param_.tolerance_wells_;
// use stricter tolerance for stopped wells and wells under zero rate target control.
constexpr Scalar stopped_factor = 1.e-4;
// use stricter tolerance for dynamic thp to ameliorate network convergence
constexpr Scalar dynamic_thp_factor = 1.e-1;
if (this->stoppedOrZeroRateTarget(simulator, well_state, deferred_logger)) {
tol_wells = tol_wells*stopped_factor;
} else if (this->getDynamicThpLimit()) {
tol_wells = tol_wells*dynamic_thp_factor;
}
std::vector res;
ConvergenceReport report = this->StdWellEval::getWellConvergence(well_state,
B_avg,
this->param_.max_residual_allowed_,
tol_wells,
this->param_.relaxed_tolerance_flow_well_,
relax_tolerance,
this->wellIsStopped(),
res,
deferred_logger);
checkConvergenceExtraEqs(res, report);
return report;
}
template
void
StandardWell::
updateProductivityIndex(const Simulator& simulator,
const WellProdIndexCalculator& wellPICalc,
WellState& well_state,
DeferredLogger& deferred_logger) const
{
auto fluidState = [&simulator, this](const int perf)
{
const auto cell_idx = this->well_cells_[perf];
return simulator.model()
.intensiveQuantities(cell_idx, /*timeIdx=*/ 0).fluidState();
};
const int np = this->number_of_phases_;
auto setToZero = [np](Scalar* x) -> void
{
std::fill_n(x, np, 0.0);
};
auto addVector = [np](const Scalar* src, Scalar* dest) -> void
{
std::transform(src, src + np, dest, dest, std::plus<>{});
};
auto& ws = well_state.well(this->index_of_well_);
auto& perf_data = ws.perf_data;
auto* wellPI = ws.productivity_index.data();
auto* connPI = perf_data.prod_index.data();
setToZero(wellPI);
const auto preferred_phase = this->well_ecl_.getPreferredPhase();
auto subsetPerfID = 0;
for (const auto& perf : *this->perf_data_) {
auto allPerfID = perf.ecl_index;
auto connPICalc = [&wellPICalc, allPerfID](const Scalar mobility) -> Scalar
{
return wellPICalc.connectionProdIndStandard(allPerfID, mobility);
};
std::vector mob(this->num_components_, 0.0);
getMobility(simulator, static_cast(subsetPerfID), mob, deferred_logger);
const auto& fs = fluidState(subsetPerfID);
setToZero(connPI);
if (this->isInjector()) {
this->computeConnLevelInjInd(fs, preferred_phase, connPICalc,
mob, connPI, deferred_logger);
}
else { // Production or zero flow rate
this->computeConnLevelProdInd(fs, connPICalc, mob, connPI);
}
addVector(connPI, wellPI);
++subsetPerfID;
connPI += np;
}
// Sum with communication in case of distributed well.
const auto& comm = this->parallel_well_info_.communication();
if (comm.size() > 1) {
comm.sum(wellPI, np);
}
assert ((static_cast(subsetPerfID) == this->number_of_perforations_) &&
"Internal logic error in processing connections for PI/II");
}
template
void StandardWell::
computeWellConnectionDensitesPressures(const Simulator& simulator,
const WellState& well_state,
const WellConnectionProps& props,
DeferredLogger& deferred_logger)
{
// Cell level dynamic property call-back functions as fall-back
// option for calculating connection level mixture densities in
// stopped or zero-rate producer wells.
const auto prop_func = typename StdWellEval::StdWellConnections::DensityPropertyFunctions {
// This becomes slightly more palatable with C++20's designated
// initialisers.
// mobility: Phase mobilities in specified cell.
[&model = simulator.model()](const int cell,
const std::vector& phases,
std::vector& mob)
{
const auto& iq = model.intensiveQuantities(cell, /* time_idx = */ 0);
std::transform(phases.begin(), phases.end(), mob.begin(),
[&iq](const int phase) { return iq.mobility(phase).value(); });
},
// densityInCell: Reservoir condition phase densities in
// specified cell.
[&model = simulator.model()](const int cell,
const std::vector& phases,
std::vector& rho)
{
const auto& fs = model.intensiveQuantities(cell, /* time_idx = */ 0).fluidState();
std::transform(phases.begin(), phases.end(), rho.begin(),
[&fs](const int phase) { return fs.density(phase).value(); });
}
};
const auto stopped_or_zero_rate_target = this->
stoppedOrZeroRateTarget(simulator, well_state, deferred_logger);
this->connections_
.computeProperties(stopped_or_zero_rate_target, well_state,
prop_func, props, deferred_logger);
}
template
void
StandardWell::
computeWellConnectionPressures(const Simulator& simulator,
const WellState& well_state,
DeferredLogger& deferred_logger)
{
const auto props = computePropertiesForWellConnectionPressures
(simulator, well_state);
computeWellConnectionDensitesPressures(simulator, well_state,
props, deferred_logger);
}
template
void
StandardWell::
solveEqAndUpdateWellState(const Simulator& simulator,
WellState& well_state,
DeferredLogger& deferred_logger)
{
if (!this->isOperableAndSolvable() && !this->wellIsStopped()) return;
// We assemble the well equations, then we check the convergence,
// which is why we do not put the assembleWellEq here.
BVectorWell dx_well(1);
dx_well[0].resize(this->primary_variables_.numWellEq());
this->linSys_.solve( dx_well);
updateWellState(simulator, dx_well, well_state, deferred_logger);
}
template
void
StandardWell::
calculateExplicitQuantities(const Simulator& simulator,
const WellState& well_state,
DeferredLogger& deferred_logger)
{
updatePrimaryVariables(simulator, well_state, deferred_logger);
computeWellConnectionPressures(simulator, well_state, deferred_logger);
this->computeAccumWell();
}
template
void
StandardWell::
apply(const BVector& x, BVector& Ax) const
{
if (!this->isOperableAndSolvable() && !this->wellIsStopped()) return;
if (this->param_.matrix_add_well_contributions_)
{
// Contributions are already in the matrix itself
return;
}
this->linSys_.apply(x, Ax);
}
template
void
StandardWell::
apply(BVector& r) const
{
if (!this->isOperableAndSolvable() && !this->wellIsStopped()) return;
this->linSys_.apply(r);
}
template
void
StandardWell::
recoverWellSolutionAndUpdateWellState(const Simulator& simulator,
const BVector& x,
WellState& well_state,
DeferredLogger& deferred_logger)
{
if (!this->isOperableAndSolvable() && !this->wellIsStopped()) return;
BVectorWell xw(1);
xw[0].resize(this->primary_variables_.numWellEq());
this->linSys_.recoverSolutionWell(x, xw);
updateWellState(simulator, xw, well_state, deferred_logger);
}
template
void
StandardWell::
computeWellRatesWithBhp(const Simulator& simulator,
const Scalar& bhp,
std::vector& well_flux,
DeferredLogger& deferred_logger) const
{
OPM_TIMEFUNCTION();
const int np = this->number_of_phases_;
well_flux.resize(np, 0.0);
const bool allow_cf = this->getAllowCrossFlow();
for (int perf = 0; perf < this->number_of_perforations_; ++perf) {
const int cell_idx = this->well_cells_[perf];
const auto& intQuants = simulator.model().intensiveQuantities(cell_idx, /*timeIdx=*/ 0);
// flux for each perforation
std::vector mob(this->num_components_, 0.);
getMobility(simulator, perf, mob, deferred_logger);
Scalar trans_mult = simulator.problem().template wellTransMultiplier(intQuants, cell_idx);
const auto& wellstate_nupcol = simulator.problem().wellModel().nupcolWellState().well(this->index_of_well_);
const std::vector Tw = this->wellIndex(perf, intQuants, trans_mult, wellstate_nupcol);
std::vector cq_s(this->num_components_, 0.);
PerforationRates perf_rates;
computePerfRate(intQuants, mob, bhp, Tw, perf, allow_cf,
cq_s, perf_rates, deferred_logger);
for(int p = 0; p < np; ++p) {
well_flux[this->modelCompIdxToFlowCompIdx(p)] += cq_s[p];
}
// the solvent contribution is added to the gas potentials
if constexpr (has_solvent) {
const auto& pu = this->phaseUsage();
assert(pu.phase_used[Gas]);
const int gas_pos = pu.phase_pos[Gas];
well_flux[gas_pos] += cq_s[Indices::contiSolventEqIdx];
}
}
this->parallel_well_info_.communication().sum(well_flux.data(), well_flux.size());
}
template
void
StandardWell::
computeWellRatesWithBhpIterations(const Simulator& simulator,
const Scalar& bhp,
std::vector& well_flux,
DeferredLogger& deferred_logger) const
{
// creating a copy of the well itself, to avoid messing up the explicit information
// during this copy, the only information not copied properly is the well controls
StandardWell well_copy(*this);
well_copy.resetDampening();
// iterate to get a more accurate well density
// create a copy of the well_state to use. If the operability checking is sucessful, we use this one
// to replace the original one
WellState well_state_copy = simulator.problem().wellModel().wellState();
const auto& group_state = simulator.problem().wellModel().groupState();
// Get the current controls.
const auto& summary_state = simulator.vanguard().summaryState();
auto inj_controls = well_copy.well_ecl_.isInjector()
? well_copy.well_ecl_.injectionControls(summary_state)
: Well::InjectionControls(0);
auto prod_controls = well_copy.well_ecl_.isProducer()
? well_copy.well_ecl_.productionControls(summary_state) :
Well::ProductionControls(0);
// Set current control to bhp, and bhp value in state, modify bhp limit in control object.
auto& ws = well_state_copy.well(this->index_of_well_);
if (well_copy.well_ecl_.isInjector()) {
inj_controls.bhp_limit = bhp;
ws.injection_cmode = Well::InjectorCMode::BHP;
} else {
prod_controls.bhp_limit = bhp;
ws.production_cmode = Well::ProducerCMode::BHP;
}
ws.bhp = bhp;
// initialized the well rates with the potentials i.e. the well rates based on bhp
const int np = this->number_of_phases_;
const Scalar sign = this->well_ecl_.isInjector() ? 1.0 : -1.0;
for (int phase = 0; phase < np; ++phase){
well_state_copy.wellRates(this->index_of_well_)[phase]
= sign * ws.well_potentials[phase];
}
well_copy.updatePrimaryVariables(simulator, well_state_copy, deferred_logger);
well_copy.computeAccumWell();
const double dt = simulator.timeStepSize();
const bool converged = well_copy.iterateWellEqWithControl(simulator, dt, inj_controls, prod_controls, well_state_copy, group_state, deferred_logger);
if (!converged) {
const std::string msg = " well " + name() + " did not get converged during well potential calculations "
" potentials are computed based on unconverged solution";
deferred_logger.debug(msg);
}
well_copy.updatePrimaryVariables(simulator, well_state_copy, deferred_logger);
well_copy.computeWellConnectionPressures(simulator, well_state_copy, deferred_logger);
well_copy.computeWellRatesWithBhp(simulator, bhp, well_flux, deferred_logger);
}
template
std::vector::Scalar>
StandardWell::
computeWellPotentialWithTHP(const Simulator& simulator,
DeferredLogger& deferred_logger,
const WellState& well_state) const
{
std::vector potentials(this->number_of_phases_, 0.0);
const auto& summary_state = simulator.vanguard().summaryState();
const auto& well = this->well_ecl_;
if (well.isInjector()){
const auto& controls = this->well_ecl_.injectionControls(summary_state);
auto bhp_at_thp_limit = computeBhpAtThpLimitInj(simulator, summary_state, deferred_logger);
if (bhp_at_thp_limit) {
const Scalar bhp = std::min(*bhp_at_thp_limit,
static_cast(controls.bhp_limit));
computeWellRatesWithBhp(simulator, bhp, potentials, deferred_logger);
} else {
deferred_logger.warning("FAILURE_GETTING_CONVERGED_POTENTIAL",
"Failed in getting converged thp based potential calculation for well "
+ name() + ". Instead the bhp based value is used");
const Scalar bhp = controls.bhp_limit;
computeWellRatesWithBhp(simulator, bhp, potentials, deferred_logger);
}
} else {
computeWellRatesWithThpAlqProd(
simulator, summary_state,
deferred_logger, potentials, this->getALQ(well_state)
);
}
return potentials;
}
template
bool
StandardWell::
computeWellPotentialsImplicit(const Simulator& simulator,
const WellState& well_state,
std::vector& well_potentials,
DeferredLogger& deferred_logger) const
{
// Create a copy of the well.
// TODO: check if we can avoid taking multiple copies. Call from updateWellPotentials
// is allready a copy, but not from other calls.
StandardWell well_copy(*this);
// store a copy of the well state, we don't want to update the real well state
WellState well_state_copy = well_state;
const auto& group_state = simulator.problem().wellModel().groupState();
auto& ws = well_state_copy.well(this->index_of_well_);
// get current controls
const auto& summary_state = simulator.vanguard().summaryState();
auto inj_controls = well_copy.well_ecl_.isInjector()
? well_copy.well_ecl_.injectionControls(summary_state)
: Well::InjectionControls(0);
auto prod_controls = well_copy.well_ecl_.isProducer()
? well_copy.well_ecl_.productionControls(summary_state) :
Well::ProductionControls(0);
// prepare/modify well state and control
well_copy.prepareForPotentialCalculations(summary_state, well_state_copy, inj_controls, prod_controls);
// update connection pressures relative to updated bhp to get better estimate of connection dp
const int num_perf = ws.perf_data.size();
for (int perf = 0; perf < num_perf; ++perf) {
ws.perf_data.pressure[perf] = ws.bhp + well_copy.connections_.pressure_diff(perf);
}
// initialize rates from previous potentials
const int np = this->number_of_phases_;
bool trivial = true;
for (int phase = 0; phase < np; ++phase){
trivial = trivial && (ws.well_potentials[phase] == 0.0) ;
}
if (!trivial) {
const Scalar sign = well_copy.well_ecl_.isInjector() ? 1.0 : -1.0;
for (int phase = 0; phase < np; ++phase) {
ws.surface_rates[phase] = sign * ws.well_potentials[phase];
}
}
well_copy.calculateExplicitQuantities(simulator, well_state_copy, deferred_logger);
const double dt = simulator.timeStepSize();
// iterate to get a solution at the given bhp.
bool converged = false;
if (this->well_ecl_.isProducer() && this->wellHasTHPConstraints(summary_state)) {
converged = well_copy.solveWellWithTHPConstraint(simulator, dt, inj_controls, prod_controls, well_state_copy, group_state, deferred_logger);
} else {
converged = well_copy.iterateWellEqWithSwitching(simulator, dt, inj_controls, prod_controls, well_state_copy, group_state, deferred_logger);
}
// fetch potentials (sign is updated on the outside).
well_potentials.clear();
well_potentials.resize(np, 0.0);
for (int comp_idx = 0; comp_idx < this->num_components_; ++comp_idx) {
if (has_solvent && comp_idx == Indices::contiSolventEqIdx) continue; // we do not store the solvent in the well_potentials
const EvalWell rate = well_copy.primary_variables_.getQs(comp_idx);
well_potentials[this->modelCompIdxToFlowCompIdx(comp_idx)] = rate.value();
}
// the solvent contribution is added to the gas potentials
if constexpr (has_solvent) {
const auto& pu = this->phaseUsage();
assert(pu.phase_used[Gas]);
const int gas_pos = pu.phase_pos[Gas];
const EvalWell rate = well_copy.primary_variables_.getQs(Indices::contiSolventEqIdx);
well_potentials[gas_pos] += rate.value();
}
return converged;
}
template
typename StandardWell::Scalar
StandardWell::
computeWellRatesAndBhpWithThpAlqProd(const Simulator &simulator,
const SummaryState &summary_state,
DeferredLogger& deferred_logger,
std::vector& potentials,
Scalar alq) const
{
Scalar bhp;
auto bhp_at_thp_limit = computeBhpAtThpLimitProdWithAlq(
simulator, summary_state, alq, deferred_logger, /*iterate_if_no_solution */ true);
if (bhp_at_thp_limit) {
const auto& controls = this->well_ecl_.productionControls(summary_state);
bhp = std::max(*bhp_at_thp_limit,
static_cast(controls.bhp_limit));
computeWellRatesWithBhp(simulator, bhp, potentials, deferred_logger);
}
else {
deferred_logger.warning("FAILURE_GETTING_CONVERGED_POTENTIAL",
"Failed in getting converged thp based potential calculation for well "
+ name() + ". Instead the bhp based value is used");
const auto& controls = this->well_ecl_.productionControls(summary_state);
bhp = controls.bhp_limit;
computeWellRatesWithBhp(simulator, bhp, potentials, deferred_logger);
}
return bhp;
}
template
void
StandardWell::
computeWellRatesWithThpAlqProd(const Simulator& simulator,
const SummaryState& summary_state,
DeferredLogger& deferred_logger,
std::vector& potentials,
Scalar alq) const
{
/*double bhp =*/
computeWellRatesAndBhpWithThpAlqProd(simulator,
summary_state,
deferred_logger,
potentials,
alq);
}
template
void
StandardWell::
computeWellPotentials(const Simulator& simulator,
const WellState& well_state,
std::vector& well_potentials,
DeferredLogger& deferred_logger) // const
{
const auto [compute_potential, bhp_controlled_well] =
this->WellInterfaceGeneric::computeWellPotentials(well_potentials, well_state);
if (!compute_potential) {
return;
}
bool converged_implicit = false;
// for newly opened wells we dont compute the potentials implicit
// group controlled wells with defaulted guiderates will have zero targets as
// the potentials are used to compute the well fractions.
if (this->param_.local_well_solver_control_switching_ && !(this->changed_to_open_this_step_ && this->wellUnderZeroRateTarget(simulator, well_state, deferred_logger))) {
converged_implicit = computeWellPotentialsImplicit(simulator, well_state, well_potentials, deferred_logger);
}
if (!converged_implicit) {
// does the well have a THP related constraint?
const auto& summaryState = simulator.vanguard().summaryState();
if (!Base::wellHasTHPConstraints(summaryState) || bhp_controlled_well) {
// get the bhp value based on the bhp constraints
Scalar bhp = WellBhpThpCalculator(*this).mostStrictBhpFromBhpLimits(summaryState);
// In some very special cases the bhp pressure target are
// temporary violated. This may lead to too small or negative potentials
// that could lead to premature shutting of wells.
// As a remedy the bhp that gives the largest potential is used.
// For converged cases, ws.bhp <=bhp for injectors and ws.bhp >= bhp,
// and the potentials will be computed using the limit as expected.
const auto& ws = well_state.well(this->index_of_well_);
if (this->isInjector())
bhp = std::max(ws.bhp, bhp);
else
bhp = std::min(ws.bhp, bhp);
assert(std::abs(bhp) != std::numeric_limits::max());
computeWellRatesWithBhpIterations(simulator, bhp, well_potentials, deferred_logger);
} else {
// the well has a THP related constraint
well_potentials = computeWellPotentialWithTHP(simulator, deferred_logger, well_state);
}
}
this->checkNegativeWellPotentials(well_potentials,
this->param_.check_well_operability_,
deferred_logger);
}
template
typename StandardWell::Scalar
StandardWell::
connectionDensity([[maybe_unused]] const int globalConnIdx,
const int openConnIdx) const
{
return (openConnIdx < 0)
? 0.0
: this->connections_.rho(openConnIdx);
}
template
void
StandardWell::
updatePrimaryVariables(const Simulator& simulator,
const WellState& well_state,
DeferredLogger& deferred_logger)
{
if (!this->isOperableAndSolvable() && !this->wellIsStopped()) return;
const bool stop_or_zero_rate_target = this->stoppedOrZeroRateTarget(simulator, well_state, deferred_logger);
this->primary_variables_.update(well_state, stop_or_zero_rate_target, deferred_logger);
// other primary variables related to polymer injection
if constexpr (Base::has_polymermw) {
this->primary_variables_.updatePolyMW(well_state);
}
this->primary_variables_.checkFinite(deferred_logger);
}
template
typename StandardWell::Scalar
StandardWell::
getRefDensity() const
{
return this->connections_.rho();
}
template
void
StandardWell::
updateWaterMobilityWithPolymer(const Simulator& simulator,
const int perf,
std::vector& mob,
DeferredLogger& deferred_logger) const
{
const int cell_idx = this->well_cells_[perf];
const auto& int_quant = simulator.model().intensiveQuantities(cell_idx, /*timeIdx=*/ 0);
const EvalWell polymer_concentration = this->extendEval(int_quant.polymerConcentration());
// TODO: not sure should based on the well type or injecting/producing peforations
// it can be different for crossflow
if (this->isInjector()) {
// assume fully mixing within injecting wellbore
const auto& visc_mult_table = PolymerModule::plyviscViscosityMultiplierTable(int_quant.pvtRegionIndex());
const unsigned waterCompIdx = Indices::canonicalToActiveComponentIndex(FluidSystem::waterCompIdx);
mob[waterCompIdx] /= (this->extendEval(int_quant.waterViscosityCorrection()) * visc_mult_table.eval(polymer_concentration, /*extrapolate=*/true) );
}
if (PolymerModule::hasPlyshlog()) {
// we do not calculate the shear effects for injection wells when they do not
// inject polymer.
if (this->isInjector() && this->wpolymer() == 0.) {
return;
}
// compute the well water velocity with out shear effects.
// TODO: do we need to turn on crossflow here?
const bool allow_cf = this->getAllowCrossFlow() || openCrossFlowAvoidSingularity(simulator);
const EvalWell& bhp = this->primary_variables_.eval(Bhp);
std::vector cq_s(this->num_components_, {this->primary_variables_.numWellEq() + Indices::numEq, 0.});
PerforationRates perf_rates;
Scalar trans_mult = simulator.problem().template wellTransMultiplier(int_quant, cell_idx);
const auto& wellstate_nupcol = simulator.problem().wellModel().nupcolWellState().well(this->index_of_well_);
const std::vector Tw = this->wellIndex(perf, int_quant, trans_mult, wellstate_nupcol);
computePerfRate(int_quant, mob, bhp, Tw, perf, allow_cf, cq_s,
perf_rates, deferred_logger);
// TODO: make area a member
const Scalar area = 2 * M_PI * this->perf_rep_radius_[perf] * this->perf_length_[perf];
const auto& material_law_manager = simulator.problem().materialLawManager();
const auto& scaled_drainage_info =
material_law_manager->oilWaterScaledEpsInfoDrainage(cell_idx);
const Scalar swcr = scaled_drainage_info.Swcr;
const EvalWell poro = this->extendEval(int_quant.porosity());
const EvalWell sw = this->extendEval(int_quant.fluidState().saturation(FluidSystem::waterPhaseIdx));
// guard against zero porosity and no water
const EvalWell denom = max( (area * poro * (sw - swcr)), 1e-12);
const unsigned waterCompIdx = Indices::canonicalToActiveComponentIndex(FluidSystem::waterCompIdx);
EvalWell water_velocity = cq_s[waterCompIdx] / denom * this->extendEval(int_quant.fluidState().invB(FluidSystem::waterPhaseIdx));
if (PolymerModule::hasShrate()) {
// the equation for the water velocity conversion for the wells and reservoir are from different version
// of implementation. It can be changed to be more consistent when possible.
water_velocity *= PolymerModule::shrate( int_quant.pvtRegionIndex() ) / this->bore_diameters_[perf];
}
const EvalWell shear_factor = PolymerModule::computeShearFactor(polymer_concentration,
int_quant.pvtRegionIndex(),
water_velocity);
// modify the mobility with the shear factor.
mob[waterCompIdx] /= shear_factor;
}
}
template
void
StandardWell::addWellContributions(SparseMatrixAdapter& jacobian) const
{
this->linSys_.extract(jacobian);
}
template
void
StandardWell::addWellPressureEquations(PressureMatrix& jacobian,
const BVector& weights,
const int pressureVarIndex,
const bool use_well_weights,
const WellState& well_state) const
{
this->linSys_.extractCPRPressureMatrix(jacobian,
weights,
pressureVarIndex,
use_well_weights,
*this,
Bhp,
well_state);
}
template
typename StandardWell::EvalWell
StandardWell::
pskinwater(const Scalar throughput,
const EvalWell& water_velocity,
DeferredLogger& deferred_logger) const
{
if constexpr (Base::has_polymermw) {
const int water_table_id = this->polymerWaterTable_();
if (water_table_id <= 0) {
OPM_DEFLOG_THROW(std::runtime_error,
fmt::format("Unused SKPRWAT table id used for well {}", name()),
deferred_logger);
}
const auto& water_table_func = PolymerModule::getSkprwatTable(water_table_id);
const EvalWell throughput_eval(this->primary_variables_.numWellEq() + Indices::numEq, throughput);
// the skin pressure when injecting water, which also means the polymer concentration is zero
EvalWell pskin_water(this->primary_variables_.numWellEq() + Indices::numEq, 0.0);
pskin_water = water_table_func.eval(throughput_eval, water_velocity);
return pskin_water;
} else {
OPM_DEFLOG_THROW(std::runtime_error,
fmt::format("Polymermw is not activated, while injecting "
"skin pressure is requested for well {}", name()),
deferred_logger);
}
}
template
typename StandardWell::EvalWell
StandardWell::
pskin(const Scalar throughput,
const EvalWell& water_velocity,
const EvalWell& poly_inj_conc,
DeferredLogger& deferred_logger) const
{
if constexpr (Base::has_polymermw) {
const Scalar sign = water_velocity >= 0. ? 1.0 : -1.0;
const EvalWell water_velocity_abs = abs(water_velocity);
if (poly_inj_conc == 0.) {
return sign * pskinwater(throughput, water_velocity_abs, deferred_logger);
}
const int polymer_table_id = this->polymerTable_();
if (polymer_table_id <= 0) {
OPM_DEFLOG_THROW(std::runtime_error,
fmt::format("Unavailable SKPRPOLY table id used for well {}", name()),
deferred_logger);
}
const auto& skprpolytable = PolymerModule::getSkprpolyTable(polymer_table_id);
const Scalar reference_concentration = skprpolytable.refConcentration;
const EvalWell throughput_eval(this->primary_variables_.numWellEq() + Indices::numEq, throughput);
// the skin pressure when injecting water, which also means the polymer concentration is zero
EvalWell pskin_poly(this->primary_variables_.numWellEq() + Indices::numEq, 0.0);
pskin_poly = skprpolytable.table_func.eval(throughput_eval, water_velocity_abs);
if (poly_inj_conc == reference_concentration) {
return sign * pskin_poly;
}
// poly_inj_conc != reference concentration of the table, then some interpolation will be required
const EvalWell pskin_water = pskinwater(throughput, water_velocity_abs, deferred_logger);
const EvalWell pskin = pskin_water + (pskin_poly - pskin_water) / reference_concentration * poly_inj_conc;
return sign * pskin;
} else {
OPM_DEFLOG_THROW(std::runtime_error,
fmt::format("Polymermw is not activated, while injecting "
"skin pressure is requested for well {}", name()),
deferred_logger);
}
}
template
typename StandardWell::EvalWell
StandardWell::
wpolymermw(const Scalar throughput,
const EvalWell& water_velocity,
DeferredLogger& deferred_logger) const
{
if constexpr (Base::has_polymermw) {
const int table_id = this->polymerInjTable_();
const auto& table_func = PolymerModule::getPlymwinjTable(table_id);
const EvalWell throughput_eval(this->primary_variables_.numWellEq() + Indices::numEq, throughput);
EvalWell molecular_weight(this->primary_variables_.numWellEq() + Indices::numEq, 0.);
if (this->wpolymer() == 0.) { // not injecting polymer
return molecular_weight;
}
molecular_weight = table_func.eval(throughput_eval, abs(water_velocity));
return molecular_weight;
} else {
OPM_DEFLOG_THROW(std::runtime_error,
fmt::format("Polymermw is not activated, while injecting "
"polymer molecular weight is requested for well {}", name()),
deferred_logger);
}
}
template
void
StandardWell::
updateWaterThroughput([[maybe_unused]] const double dt,
WellState& well_state) const
{
if constexpr (Base::has_polymermw) {
if (!this->isInjector()) {
return;
}
auto& perf_water_throughput = well_state.well(this->index_of_well_)
.perf_data.water_throughput;
for (int perf = 0; perf < this->number_of_perforations_; ++perf) {
const Scalar perf_water_vel =
this->primary_variables_.value(Bhp + 1 + perf);
// we do not consider the formation damage due to water
// flowing from reservoir into wellbore
if (perf_water_vel > Scalar{0}) {
perf_water_throughput[perf] += perf_water_vel * dt;
}
}
}
}
template
void
StandardWell::
handleInjectivityRate(const Simulator& simulator,
const int perf,
std::vector& cq_s) const
{
const int cell_idx = this->well_cells_[perf];
const auto& int_quants = simulator.model().intensiveQuantities(cell_idx, /*timeIdx=*/ 0);
const auto& fs = int_quants.fluidState();
const EvalWell b_w = this->extendEval(fs.invB(FluidSystem::waterPhaseIdx));
const Scalar area = M_PI * this->bore_diameters_[perf] * this->perf_length_[perf];
const int wat_vel_index = Bhp + 1 + perf;
const unsigned water_comp_idx = Indices::canonicalToActiveComponentIndex(FluidSystem::waterCompIdx);
// water rate is update to use the form from water velocity, since water velocity is
// a primary variable now
cq_s[water_comp_idx] = area * this->primary_variables_.eval(wat_vel_index) * b_w;
}
template
void
StandardWell::
handleInjectivityEquations(const Simulator& simulator,
const WellState& well_state,
const int perf,
const EvalWell& water_flux_s,
DeferredLogger& deferred_logger)
{
const int cell_idx = this->well_cells_[perf];
const auto& int_quants = simulator.model().intensiveQuantities(cell_idx, /*timeIdx=*/ 0);
const auto& fs = int_quants.fluidState();
const EvalWell b_w = this->extendEval(fs.invB(FluidSystem::waterPhaseIdx));
const EvalWell water_flux_r = water_flux_s / b_w;
const Scalar area = M_PI * this->bore_diameters_[perf] * this->perf_length_[perf];
const EvalWell water_velocity = water_flux_r / area;
const int wat_vel_index = Bhp + 1 + perf;
// equation for the water velocity
const EvalWell eq_wat_vel = this->primary_variables_.eval(wat_vel_index) - water_velocity;
const auto& ws = well_state.well(this->index_of_well_);
const auto& perf_data = ws.perf_data;
const auto& perf_water_throughput = perf_data.water_throughput;
const Scalar throughput = perf_water_throughput[perf];
const int pskin_index = Bhp + 1 + this->number_of_perforations_ + perf;
EvalWell poly_conc(this->primary_variables_.numWellEq() + Indices::numEq, 0.0);
poly_conc.setValue(this->wpolymer());
// equation for the skin pressure
const EvalWell eq_pskin = this->primary_variables_.eval(pskin_index)
- pskin(throughput, this->primary_variables_.eval(wat_vel_index), poly_conc, deferred_logger);
StandardWellAssemble(*this).
assembleInjectivityEq(eq_pskin,
eq_wat_vel,
pskin_index,
wat_vel_index,
perf,
this->primary_variables_.numWellEq(),
this->linSys_);
}
template
void
StandardWell::
checkConvergenceExtraEqs(const std::vector& res,
ConvergenceReport& report) const
{
// if different types of extra equations are involved, this function needs to be refactored further
// checking the convergence of the extra equations related to polymer injectivity
if constexpr (Base::has_polymermw) {
WellConvergence(*this).
checkConvergencePolyMW(res, Bhp, this->param_.max_residual_allowed_, report);
}
}
template
void
StandardWell::
updateConnectionRatePolyMW(const EvalWell& cq_s_poly,
const IntensiveQuantities& int_quants,
const WellState& well_state,
const int perf,
std::vector& connectionRates,
DeferredLogger& deferred_logger) const
{
// the source term related to transport of molecular weight
EvalWell cq_s_polymw = cq_s_poly;
if (this->isInjector()) {
const int wat_vel_index = Bhp + 1 + perf;
const EvalWell water_velocity = this->primary_variables_.eval(wat_vel_index);
if (water_velocity > 0.) { // injecting
const auto& ws = well_state.well(this->index_of_well_);
const auto& perf_water_throughput = ws.perf_data.water_throughput;
const Scalar throughput = perf_water_throughput[perf];
const EvalWell molecular_weight = wpolymermw(throughput, water_velocity, deferred_logger);
cq_s_polymw *= molecular_weight;
} else {
// we do not consider the molecular weight from the polymer
// going-back to the wellbore through injector
cq_s_polymw *= 0.;
}
} else if (this->isProducer()) {
if (cq_s_polymw < 0.) {
cq_s_polymw *= this->extendEval(int_quants.polymerMoleWeight() );
} else {
// we do not consider the molecular weight from the polymer
// re-injecting back through producer
cq_s_polymw *= 0.;
}
}
connectionRates[perf][Indices::contiPolymerMWEqIdx] = Base::restrictEval(cq_s_polymw);
}
template
std::optional::Scalar>
StandardWell::
computeBhpAtThpLimitProd(const WellState& well_state,
const Simulator& simulator,
const SummaryState& summary_state,
DeferredLogger& deferred_logger) const
{
return computeBhpAtThpLimitProdWithAlq(simulator,
summary_state,
this->getALQ(well_state),
deferred_logger,
/*iterate_if_no_solution */ true);
}
template
std::optional::Scalar>
StandardWell::
computeBhpAtThpLimitProdWithAlq(const Simulator& simulator,
const SummaryState& summary_state,
const Scalar alq_value,
DeferredLogger& deferred_logger,
bool iterate_if_no_solution) const
{
OPM_TIMEFUNCTION();
// Make the frates() function.
auto frates = [this, &simulator, &deferred_logger](const Scalar bhp) {
// Not solving the well equations here, which means we are
// calculating at the current Fg/Fw values of the
// well. This does not matter unless the well is
// crossflowing, and then it is likely still a good
// approximation.
std::vector rates(3);
computeWellRatesWithBhp(simulator, bhp, rates, deferred_logger);
this->adaptRatesForVFP(rates);
return rates;
};
Scalar max_pressure = 0.0;
for (int perf = 0; perf < this->number_of_perforations_; ++perf) {
const int cell_idx = this->well_cells_[perf];
const auto& int_quants = simulator.model().intensiveQuantities(cell_idx, /*timeIdx=*/ 0);
const auto& fs = int_quants.fluidState();
Scalar pressure_cell = this->getPerfCellPressure(fs).value();
max_pressure = std::max(max_pressure, pressure_cell);
}
auto bhpAtLimit = WellBhpThpCalculator(*this).computeBhpAtThpLimitProd(frates,
summary_state,
max_pressure,
this->connections_.rho(),
alq_value,
this->getTHPConstraint(summary_state),
deferred_logger);
if (bhpAtLimit) {
auto v = frates(*bhpAtLimit);
if (std::all_of(v.cbegin(), v.cend(), [](Scalar i){ return i <= 0; }) ) {
return bhpAtLimit;
}
}
if (!iterate_if_no_solution)
return std::nullopt;
auto fratesIter = [this, &simulator, &deferred_logger](const Scalar bhp) {
// Solver the well iterations to see if we are
// able to get a solution with an update
// solution
std::vector rates(3);
computeWellRatesWithBhpIterations(simulator, bhp, rates, deferred_logger);
this->adaptRatesForVFP(rates);
return rates;
};
bhpAtLimit = WellBhpThpCalculator(*this).computeBhpAtThpLimitProd(fratesIter,
summary_state,
max_pressure,
this->connections_.rho(),
alq_value,
this->getTHPConstraint(summary_state),
deferred_logger);
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(), [](Scalar i){ return i <= 0; }) ) {
return bhpAtLimit;
}
}
// we still don't get a valied solution.
return std::nullopt;
}
template