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c8b402651d
Adapted from formulas here: https://petrowiki.spe.org/Production_forecasting_decline_curve_analysis
51 lines
2.4 KiB
C++
51 lines
2.4 KiB
C++
/////////////////////////////////////////////////////////////////////////////////
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//
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// Copyright (C) 2023- Equinor ASA
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//
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// ResInsight 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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//
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// ResInsight is distributed in the hope that it will be useful, but WITHOUT ANY
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// WARRANTY; without even the implied warranty of MERCHANTABILITY or
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// FITNESS FOR A PARTICULAR PURPOSE.
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//
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// See the GNU General Public License at <http://www.gnu.org/licenses/gpl.html>
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// for more details.
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//
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/////////////////////////////////////////////////////////////////////////////////
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#pragma once
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//==================================================================================================
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//
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//
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//
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//==================================================================================================
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class RigDeclineCurveCalculator
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{
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public:
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static double computeDeclineRate( double time0, double value0, double time1, double value1 );
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static double computeFlowRateExponentialDecline( double initialProductionRateQi, double initialDeclineRateDi, double timeSinceStart );
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static double computeFlowRateHarmonicDecline( double initialProductionRateQi, double initialDeclineRateDi, double timeSinceStart );
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static double computeFlowRateHyperbolicDecline( double initialProductionRateQi,
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double initialDeclineRateDi,
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double timeSinceStart,
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double hyperbolicDeclineConstantB );
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static double
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computeCumulativeProductionExponentialDecline( double initialProductionRateQi, double initialDeclineRateDi, double timeSinceStart );
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static double
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computeCumulativeProductionHarmonicDecline( double initialProductionRateQi, double initialDeclineRateDi, double timeSinceStart );
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static double computeCumulativeProductionHyperbolicDecline( double initialProductionRateQi,
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double initialDeclineRateDi,
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double timeSinceStart,
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double hyperbolicDeclineConstantB );
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};
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