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The well potentials are caculated based on the well rates and pressure drawdown at every time step. They are used to calculate default guide rates used in group controlled wells. well_perforation_pressure_diffs is stored in WellStateFullyImplicitBlackoil as it is needed in the well potential calculations.
203 lines
8.7 KiB
C++
203 lines
8.7 KiB
C++
/*
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Copyright 2014 SINTEF ICT, Applied Mathematics.
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Copyright 2015 IRIS AS
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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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#ifndef OPM_WELLSTATEFULLYIMPLICITBLACKOIL_HEADER_INCLUDED
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#define OPM_WELLSTATEFULLYIMPLICITBLACKOIL_HEADER_INCLUDED
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#include <opm/core/wells.h>
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#include <opm/core/well_controls.h>
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#include <opm/core/simulator/WellState.hpp>
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#include <opm/common/ErrorMacros.hpp>
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#include <vector>
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#include <cassert>
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#include <string>
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#include <utility>
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#include <map>
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#include <algorithm>
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#include <array>
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namespace Opm
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{
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/// The state of a set of wells, tailored for use by the fully
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/// implicit blackoil simulator.
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class WellStateFullyImplicitBlackoil
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: public WellState
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{
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typedef WellState BaseType;
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public:
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typedef BaseType :: WellMapType WellMapType;
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using BaseType :: wellRates;
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using BaseType :: bhp;
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using BaseType :: perfPress;
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using BaseType :: wellMap;
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using BaseType :: numWells;
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using BaseType :: numPhases;
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/// Allocate and initialize if wells is non-null. Also tries
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/// to give useful initial values to the bhp(), wellRates()
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/// and perfPhaseRates() fields, depending on controls
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template <class State, class PrevState>
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void init(const Wells* wells, const State& state, const PrevState& prevState)
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{
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// call init on base class
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BaseType :: init(wells, state);
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// if there are no well, do nothing in init
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if (wells == 0) {
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return;
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}
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const int nw = wells->number_of_wells;
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if( nw == 0 ) return ;
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// Initialize perfphaserates_, which must be done here.
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const int np = wells->number_of_phases;
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const int nperf = wells->well_connpos[nw];
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// Ensure that we start out with zero rates by default.
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perfphaserates_.clear();
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perfphaserates_.resize(nperf * np, 0.0);
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for (int w = 0; w < nw; ++w) {
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assert((wells->type[w] == INJECTOR) || (wells->type[w] == PRODUCER));
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const WellControls* ctrl = wells->ctrls[w];
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if (well_controls_well_is_stopped(ctrl)) {
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// Shut well: perfphaserates_ are all zero.
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} else {
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const int num_perf_this_well = wells->well_connpos[w + 1] - wells->well_connpos[w];
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// Open well: Initialize perfphaserates_ to well
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// rates divided by the number of perforations.
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for (int perf = wells->well_connpos[w]; perf < wells->well_connpos[w + 1]; ++perf) {
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for (int p = 0; p < np; ++p) {
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perfphaserates_[np*perf + p] = wellRates()[np*w + p] / double(num_perf_this_well);
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}
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perfPress()[perf] = state.pressure()[wells->well_cells[perf]];
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}
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}
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}
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// Initialize current_controls_.
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// The controls set in the Wells object are treated as defaults,
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// and also used for initial values.
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current_controls_.resize(nw);
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for (int w = 0; w < nw; ++w) {
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current_controls_[w] = well_controls_get_current(wells->ctrls[w]);
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}
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well_perforation_pressure_diffs_.resize(nperf);
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// intialize wells that have been there before
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// order may change so the mapping is based on the well name
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if( ! prevState.wellMap().empty() )
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{
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typedef typename WellMapType :: const_iterator const_iterator;
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const_iterator end = prevState.wellMap().end();
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for (int w = 0; w < nw; ++w) {
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std::string name( wells->name[ w ] );
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const_iterator it = prevState.wellMap().find( name );
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if( it != end )
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{
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const int oldIndex = (*it).second[ 0 ];
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const int newIndex = w;
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// bhp
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bhp()[ newIndex ] = prevState.bhp()[ oldIndex ];
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// wellrates
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for( int i=0, idx=newIndex*np, oldidx=oldIndex*np; i<np; ++i, ++idx, ++oldidx )
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{
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wellRates()[ idx ] = prevState.wellRates()[ oldidx ];
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}
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// perfPhaseRates
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int oldPerf_idx = (*it).second[ 1 ];
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const int num_perf_old_well = (*it).second[ 2 ];
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const int num_perf_this_well = wells->well_connpos[newIndex + 1] - wells->well_connpos[newIndex];
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// copy perforation rates when the number of perforations is equal,
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// otherwise initialize perfphaserates to well rates divided by the number of perforations.
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if( num_perf_old_well == num_perf_this_well )
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{
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int oldPerf = oldPerf_idx *np;
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for (int perf = wells->well_connpos[ newIndex ]*np;
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perf < wells->well_connpos[ newIndex + 1]*np; ++perf, ++oldPerf )
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{
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perfPhaseRates()[ perf ] = prevState.perfPhaseRates()[ oldPerf ];
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}
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} else {
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for (int perf = wells->well_connpos[newIndex]; perf < wells->well_connpos[newIndex + 1]; ++perf) {
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for (int p = 0; p < np; ++p) {
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perfPhaseRates()[np*perf + p] = wellRates()[np*newIndex + p] / double(num_perf_this_well);
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}
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}
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}
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// perfPressures
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if( num_perf_old_well == num_perf_this_well )
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{
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for (int perf = wells->well_connpos[ newIndex ];
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perf < wells->well_connpos[ newIndex + 1]; ++perf, ++oldPerf_idx )
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{
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perfPress()[ perf ] = prevState.perfPress()[ oldPerf_idx ];
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}
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}
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// currentControls
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const int old_control_index = prevState.currentControls()[ oldIndex ];
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if (old_control_index < well_controls_get_num(wells->ctrls[w])) {
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// If the set of controls have changed, this may not be identical
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// to the last control, but it must be a valid control.
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currentControls()[ newIndex ] = old_control_index;
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}
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}
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}
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}
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}
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template <class State>
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void resize(const Wells* wells, const State& state) {
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const WellStateFullyImplicitBlackoil dummy_state{}; // Init with an empty previous state only resizes
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init(wells, state, dummy_state) ;
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}
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/// One rate per phase and well connection.
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std::vector<double>& perfPhaseRates() { return perfphaserates_; }
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const std::vector<double>& perfPhaseRates() const { return perfphaserates_; }
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/// One current control per well.
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std::vector<int>& currentControls() { return current_controls_; }
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const std::vector<int>& currentControls() const { return current_controls_; }
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/// Pressure differance to the bhp for each well perforation.
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std::vector<double>& well_perforation_pressure_diffs() { return well_perforation_pressure_diffs_; }
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const std::vector<double>& well_perforation_pressure_diffs() const { return well_perforation_pressure_diffs_; }
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private:
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std::vector<double> perfphaserates_;
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std::vector<int> current_controls_;
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std::vector<double> well_perforation_pressure_diffs_;
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};
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} // namespace Opm
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#endif // OPM_WELLSTATEFULLYIMPLICITBLACKOIL_HEADER_INCLUDED
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