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adding computePerfRate() in MultisegmentWell
not tested yet.
This commit is contained in:
Kai Bao
parent
5d79a7f11b
commit
1ffa87561b
@ -711,6 +711,141 @@ namespace Opm
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template<typename TypeTag>
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void
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MultisegmentWell<TypeTag>::
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computePerfRate(const IntensiveQuantities& int_quants,
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const std::vector<EvalWell>& mob_perfcells,
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const int seg,
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const double well_index,
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const EvalWell& segment_pressure,
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const bool& allow_cf,
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std::vector<EvalWell>& cq_s) const
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{
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const int num_comp = numComponents();
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std::vector<EvalWell> cmix_s(num_comp, 0.0);
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// the composition of the components inside wellbore
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for (int comp_idx = 0; comp_idx < num_comp; ++comp_idx) {
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cmix_s[comp_idx] = surfaceVolumeFraction(seg, comp_idx);
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}
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const auto& fs = int_quants.fluidState();
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const EvalWell pressure_cell = extendEval(fs.pressure(FluidSystem::oilPhaseIdx));
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const EvalWell rs = extendEval(fs.Rs());
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const EvalWell rv = extendEval(fs.Rv());
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// not using number_of_phases_ because of solvent
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std::vector<EvalWell> b_perfcells(num_comp, 0.0);
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for (int phase = 0; phase < number_of_phases_; ++phase) {
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const int phase_idx_ebos = flowPhaseToEbosPhaseIdx(phase);
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b_perfcells[phase] = extendEval(fs.invB(phase_idx_ebos));
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}
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// TODO: not handling solvent for now
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// if (has_solvent) {
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// b_perfcells[contiSolventEqIdx] = extendEval(intQuants.solventInverseFormationVolumeFactor());
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// }
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// the pressure of the segment
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const EvalWell seg_pressure = getSegmentPressure(seg);
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// Pressure drawdown (also used to determine direction of flow)
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// TODO: not considering the two pressure difference for now. Trying to finish the framework first.
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const EvalWell drawdown = seg_pressure - pressure_cell;
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const Opm::PhaseUsage& pu = phaseUsage();
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// producing perforations
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if ( drawdown > 0.0) {
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// Do nothing is crossflow is not allowed
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if (!allow_cf && well_type_ == INJECTOR) {
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return;
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}
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// compute component volumetric rates at standard conditions
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for (int comp_idx = 0; comp_idx < num_comp; ++comp_idx) {
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const EvalWell cq_p = - well_index * (mob_perfcells[comp_idx] * drawdown);
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cq_s[comp_idx] = b_perfcells[comp_idx] * cq_p;
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}
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if (active()[Oil] && active()[Gas]) {
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const int oilpos = pu.phase_pos[Oil];
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const int gaspos = pu.phase_pos[Gas];
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const EvalWell cq_s_oil = cq_s[oilpos];
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const EvalWell cq_s_gas = cq_s[gaspos];
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cq_s[gaspos] += rs * cq_s_oil;
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cq_s[oilpos] += rv * cq_s_gas;
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}
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} else { // injecting perforations
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// Do nothing if crossflow is not allowed
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if (!allow_cf && well_type_ == PRODUCER) {
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return;
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}
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// for injecting perforations, we use total mobility
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EvalWell total_mob = mob_perfcells[0];
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for (int comp_idx = 1; comp_idx < num_comp; ++comp_idx) {
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total_mob += mob_perfcells[comp_idx];
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}
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// injection perforations total volume rates
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const EvalWell cqt_i = - well_index * (total_mob * drawdown);
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// compute volume ratio between connection and at standard conditions
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EvalWell volume_ratio = 0.0;
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if (active()[Water]) {
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const int watpos = pu.phase_pos[Water];
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volume_ratio += cmix_s[watpos] / b_perfcells[watpos];
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}
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// TODO: not handling
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// if (has_solvent) {
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// volumeRatio += cmix_s[contiSolventEqIdx] / b_perfcells_dense[contiSolventEqIdx];
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// }
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if (active()[Oil] && active()[Gas]) {
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const int oilpos = pu.phase_pos[Oil];
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const int gaspos = pu.phase_pos[Gas];
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// Incorporate RS/RV factors if both oil and gas active
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// TODO: not sure we use rs rv from the perforation cells when handling injecting perforations
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// basically, for injecting perforations, the wellbore is the upstreaming side.
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const EvalWell d = 1.0 - rv * rs;
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if (d.value() == 0.0) {
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OPM_THROW(Opm::NumericalProblem, "Zero d value obtained for well " << name() << " during flux calcuation"
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<< " with rs " << rs << " and rv " << rv);
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}
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const EvalWell tmp_oil = (cmix_s[oilpos] - rv * cmix_s[gaspos]) / d;
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volume_ratio += tmp_oil / b_perfcells[oilpos];
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const EvalWell tmp_gas = (cmix_s[gaspos] - rs * cmix_s[oilpos]) / d;
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volume_ratio += tmp_gas / b_perfcells[gaspos];
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} else { // not having gas and oil at the same time
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if (active()[Oil]) {
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const int oilpos = pu.phase_pos[Oil];
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volume_ratio += cmix_s[oilpos] / b_perfcells[oilpos];
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}
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if (active()[Gas]) {
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const int gaspos = pu.phase_pos[Gas];
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volume_ratio += cmix_s[gaspos] / b_perfcells[gaspos];
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}
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}
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// injecting connections total volumerates at standard conditions
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EvalWell cqt_is = cqt_i / volume_ratio;
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for (int comp_idx = 0; comp_idx < num_comp; ++comp_idx) {
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cq_s[comp_idx] = cmix_s[comp_idx] * cqt_is; // // TODO: checking there * b_perfcells[phase];
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}
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} // end for injection perforations
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}
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template<typename TypeTag>
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typename MultisegmentWell<TypeTag>::EvalWell
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MultisegmentWell<TypeTag>::
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@ -857,6 +992,9 @@ namespace Opm
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surf_dens[phase] = FluidSystem::referenceDensity( flowPhaseToEbosPhaseIdx(phase), pvt_region_index );
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}
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// TODO: not handling solvent for now.
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EvalWell density(0.0);
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for (int comp_idx = 0; comp_idx < num_comp; ++comp_idx) {
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density += surf_dens[comp_idx] * mix_s[comp_idx];
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