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299 lines
13 KiB
C++
299 lines
13 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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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_MULTISEGMENTWELL_EVAL_HEADER_INCLUDED
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#define OPM_MULTISEGMENTWELL_EVAL_HEADER_INCLUDED
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#include <opm/simulators/wells/MultisegmentWellGeneric.hpp>
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#include <opm/material/densead/Evaluation.hpp>
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#include <opm/input/eclipse/Schedule/Well/Well.hpp>
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#include <dune/common/fmatrix.hh>
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#include <dune/common/fvector.hh>
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#include <dune/istl/bcrsmatrix.hh>
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#include <dune/istl/bvector.hh>
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#include <array>
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#include <memory>
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namespace Dune {
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template<class Matrix> class UMFPack;
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}
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namespace Opm
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{
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class ConvergenceReport;
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class GroupState;
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class Schedule;
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class WellContributions;
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template<class FluidSystem, class Indices, class Scalar> class WellInterfaceIndices;
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class WellState;
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template<typename FluidSystem, typename Indices, typename Scalar>
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class MultisegmentWellEval : public MultisegmentWellGeneric<Scalar>
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{
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public:
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/// add the contribution (C, D, B matrices) of this Well to the WellContributions object
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void addWellContribution(WellContributions& wellContribs) const;
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protected:
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// TODO: for now, not considering the polymer, solvent and so on to simplify the development process.
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// TODO: we need to have order for the primary variables and also the order for the well equations.
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// sometimes, they are similar, while sometimes, they can have very different forms.
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// Table showing the primary variable indices, depending on what phases are present:
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//
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// WOG OG WG WO W/O/G (single phase)
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// WQTotal 0 0 0 0 0
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// WFrac 1 -1000 1 1 -1000
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// GFrac 2 1 -1000 -1000 -1000
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// Spres 3 2 2 2 1
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static constexpr bool has_water = (Indices::waterSaturationIdx >= 0);
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static constexpr bool has_gas = (Indices::compositionSwitchIdx >= 0);
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static constexpr bool has_oil = (Indices::numPhases - has_gas - has_water) > 0;
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// In the implementation, one should use has_wfrac_variable
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// rather than has_water to check if you should do something
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// with the variable at the WFrac location, similar for GFrac.
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static constexpr bool has_wfrac_variable = has_water && Indices::numPhases > 1;
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static constexpr bool has_gfrac_variable = has_gas && has_oil;
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static constexpr int WQTotal = 0;
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static constexpr int WFrac = has_wfrac_variable ? 1 : -1000;
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static constexpr int GFrac = has_gfrac_variable ? has_wfrac_variable + 1 : -1000;
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static constexpr int SPres = has_wfrac_variable + has_gfrac_variable + 1;
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// the number of well equations TODO: it should have a more general strategy for it
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static constexpr int numWellEq = Indices::numPhases + 1;
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// sparsity pattern for the matrices
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// [A C^T [x = [ res
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// B D ] x_well] res_well]
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// the vector type for the res_well and x_well
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using VectorBlockWellType = Dune::FieldVector<Scalar, numWellEq>;
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using BVectorWell = Dune::BlockVector<VectorBlockWellType>;
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using VectorBlockType = Dune::FieldVector<Scalar, Indices::numEq>;
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using BVector = Dune::BlockVector<VectorBlockType>;
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// the matrix type for the diagonal matrix D
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using DiagMatrixBlockWellType = Dune::FieldMatrix<Scalar, numWellEq, numWellEq>;
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using DiagMatWell = Dune::BCRSMatrix<DiagMatrixBlockWellType>;
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// the matrix type for the non-diagonal matrix B and C^T
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using OffDiagMatrixBlockWellType = Dune::FieldMatrix<Scalar, numWellEq, Indices::numEq>;
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using OffDiagMatWell = Dune::BCRSMatrix<OffDiagMatrixBlockWellType>;
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// TODO: for more efficient implementation, we should have EvalReservoir, EvalWell, and EvalRerservoirAndWell
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// EvalR (Eval), EvalW, EvalRW
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// TODO: for now, we only use one type to save some implementation efforts, while improve later.
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using EvalWell = DenseAd::Evaluation<double, /*size=*/Indices::numEq + numWellEq>;
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using Eval = DenseAd::Evaluation<Scalar, /*size=*/Indices::numEq>;
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MultisegmentWellEval(WellInterfaceIndices<FluidSystem,Indices,Scalar>& baseif);
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void initMatrixAndVectors(const int num_cells) const;
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void initPrimaryVariablesEvaluation() const;
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void assembleControlEq(const WellState& well_state,
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const GroupState& group_state,
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const Schedule& schedule,
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const SummaryState& summaryState,
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const Well::InjectionControls& inj_controls,
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const Well::ProductionControls& prod_controls,
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const double rho,
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DeferredLogger& deferred_logger);
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void assembleDefaultPressureEq(const int seg,
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WellState& well_state) const;
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// assemble pressure equation for ICD segments
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void assembleICDPressureEq(const int seg,
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const UnitSystem& unit_system,
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WellState& well_state,
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DeferredLogger& deferred_logger) const;
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void assemblePressureEq(const int seg,
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const UnitSystem& unit_system,
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WellState& well_state,
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DeferredLogger& deferred_logger) const;
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/// check whether the well equations get converged for this well
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ConvergenceReport getWellConvergence(const WellState& well_state,
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const std::vector<double>& B_avg,
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DeferredLogger& deferred_logger,
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const double max_residual_allowed,
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const double tolerance_wells,
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const double relaxed_inner_tolerance_flow_ms_well,
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const double tolerance_pressure_ms_wells,
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const double relaxed_inner_tolerance_pressure_ms_well,
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const bool relax_tolerance) const;
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// handling the overshooting and undershooting of the fractions
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void processFractions(const int seg) const;
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// xw = inv(D)*(rw - C*x)
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void recoverSolutionWell(const BVector& x,
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BVectorWell& xw) const;
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void updatePrimaryVariables(const WellState& well_state) const;
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void updateUpwindingSegments();
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// updating the well_state based on well solution dwells
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void updatePrimaryVariablesNewton(const BVectorWell& dwells,
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const double relaxation_factor,
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const double DFLimit,
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const double max_pressure_change) const;
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void computeSegmentFluidProperties(const EvalWell& temperature,
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const EvalWell& saltConcentration,
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int pvt_region_index,
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DeferredLogger& deferred_logger);
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EvalWell getBhp() const;
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EvalWell getFrictionPressureLoss(const int seg) const;
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EvalWell getHydroPressureLoss(const int seg) const;
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EvalWell getQs(const int comp_idx) const;
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EvalWell getSegmentWQTotal(const int seg) const;
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EvalWell getSegmentPressure(const int seg) const;
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EvalWell getSegmentRate(const int seg, const int comp_idx) const;
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EvalWell getSegmentRateUpwinding(const int seg,
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const size_t comp_idx) const;
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EvalWell getSegmentSurfaceVolume(const EvalWell& temperature,
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const EvalWell& saltConcentration,
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const int pvt_region_index,
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const int seg_idx) const;
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EvalWell getWQTotal() const;
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std::pair<bool, std::vector<Scalar> >
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getFiniteWellResiduals(const std::vector<Scalar>& B_avg,
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DeferredLogger& deferred_logger) const;
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double getControlTolerance(const WellState& well_state,
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const double tolerance_wells,
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const double tolerance_pressure_ms_wells,
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DeferredLogger& deferred_logger) const;
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double getResidualMeasureValue(const WellState& well_state,
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const std::vector<double>& residuals,
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const double tolerance_wells,
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const double tolerance_pressure_ms_wells,
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DeferredLogger& deferred_logger) const;
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void handleAccelerationPressureLoss(const int seg,
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WellState& well_state) const;
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// pressure drop for Autonomous ICD segment (WSEGAICD)
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EvalWell pressureDropAutoICD(const int seg,
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const UnitSystem& unit_system) const;
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// pressure drop for Spiral ICD segment (WSEGSICD)
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EvalWell pressureDropSpiralICD(const int seg) const;
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// pressure drop for sub-critical valve (WSEGVALV)
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EvalWell pressureDropValve(const int seg) const;
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void updateThp(WellState& well_state,
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const double rho,
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DeferredLogger& deferred_logger) const;
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void updateWellStateFromPrimaryVariables(WellState& well_state,
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const double rho,
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DeferredLogger& deferred_logger) const;
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// fraction value of the primary variables
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// should we just use member variables to store them instead of calculating them again and again
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EvalWell volumeFraction(const int seg,
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const unsigned compIdx) const;
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// F_p / g_p, the basic usage of this value is because Q_p = G_t * F_p / G_p
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EvalWell volumeFractionScaled(const int seg,
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const int comp_idx) const;
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// basically Q_p / \sigma_p Q_p
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EvalWell surfaceVolumeFraction(const int seg,
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const int comp_idx) const;
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// convert a Eval from reservoir to contain the derivative related to wells
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EvalWell extendEval(const Eval& in) const;
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const WellInterfaceIndices<FluidSystem,Indices,Scalar>& baseif_;
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// TODO, the following should go to a class for computing purpose
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// two off-diagonal matrices
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mutable OffDiagMatWell duneB_;
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mutable OffDiagMatWell duneC_;
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// "diagonal" matrix for the well. It has offdiagonal entries for inlets and outlets.
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mutable DiagMatWell duneD_;
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/// \brief solver for diagonal matrix
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///
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/// This is a shared_ptr as MultisegmentWell is copied in computeWellPotentials...
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mutable std::shared_ptr<Dune::UMFPack<DiagMatWell> > duneDSolver_;
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// residuals of the well equations
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mutable BVectorWell resWell_;
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// the values for the primary varibles
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// based on different solutioin strategies, the wells can have different primary variables
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mutable std::vector<std::array<double, numWellEq> > primary_variables_;
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// the Evaluation for the well primary variables, which contain derivativles and are used in AD calculation
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mutable std::vector<std::array<EvalWell, numWellEq> > primary_variables_evaluation_;
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// the upwinding segment for each segment based on the flow direction
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std::vector<int> upwinding_segments_;
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// the densities of segment fluids
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// we should not have this member variable
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std::vector<EvalWell> segment_densities_;
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// the mass rate of the segments
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std::vector<EvalWell> segment_mass_rates_;
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// the viscosity of the segments
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std::vector<EvalWell> segment_viscosities_;
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std::vector<std::vector<EvalWell>> segment_phase_densities_;
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std::vector<std::vector<EvalWell>> segment_phase_fractions_;
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std::vector<std::vector<EvalWell>> segment_phase_viscosities_;
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// depth difference between perforations and the perforated grid cells
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std::vector<double> cell_perforation_depth_diffs_;
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// pressure correction due to the different depth of the perforation and
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// center depth of the grid block
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std::vector<double> cell_perforation_pressure_diffs_;
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};
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}
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#endif // OPM_MULTISEGMENTWELL_GENERIC_HEADER_INCLUDED
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