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Add "Decline Curves" functionality.

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Adapted from formulas here:
https://petrowiki.spe.org/Production_forecasting_decline_curve_analysis
This commit is contained in:
Kristian Bendiksen
2023-04-26 12:31:57 +02:00
parent bc718db7df
commit c8b402651d
16 changed files with 878 additions and 33 deletions
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1
ApplicationLibCode/ReservoirDataModel/CMakeLists_files.cmake
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@@ -181,6 +181,7 @@ set(SOURCE_GROUP_SOURCE_FILES
${CMAKE_CURRENT_LIST_DIR}/RigWellAllocationOverTime.cpp
${CMAKE_CURRENT_LIST_DIR}/RigWellResultBranch.cpp
${CMAKE_CURRENT_LIST_DIR}/RigWellResultFrame.cpp
${CMAKE_CURRENT_LIST_DIR}/RigDeclineCurveCalculator.cpp
)
list(APPEND CODE_HEADER_FILES ${SOURCE_GROUP_HEADER_FILES})

97
ApplicationLibCode/ReservoirDataModel/RigDeclineCurveCalculator.cpp Normal file
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@@ -0,0 +1,97 @@
/////////////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2023- Equinor ASA
//
// ResInsight 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.
//
// ResInsight 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 at <http://www.gnu.org/licenses/gpl.html>
// for more details.
//
/////////////////////////////////////////////////////////////////////////////////
#include "RigDeclineCurveCalculator.h"
#include <cmath>
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
double RigDeclineCurveCalculator::computeDeclineRate( double time0, double value0, double time1, double value1 )
{
return ( 1.0 / ( time1 - time0 ) ) * std::log( value0 / value1 );
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
double RigDeclineCurveCalculator::computeFlowRateExponentialDecline( double initialProductionRateQi,
double initialDeclineRateDi,
double timeSinceStart )
{
return initialProductionRateQi * std::exp( -initialDeclineRateDi * timeSinceStart );
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
double RigDeclineCurveCalculator::computeFlowRateHarmonicDecline( double initialProductionRateQi, double initialDeclineRateDi, double timeSinceStart )
{
return initialProductionRateQi / ( 1.0 + initialDeclineRateDi * timeSinceStart );
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
double RigDeclineCurveCalculator::computeFlowRateHyperbolicDecline( double initialProductionRateQi,
double initialDeclineRateDi,
double timeSinceStart,
double hyperbolicDeclineConstantB )
{
return initialProductionRateQi /
std::pow( 1.0 + hyperbolicDeclineConstantB * initialDeclineRateDi * timeSinceStart, 1.0 / hyperbolicDeclineConstantB );
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
double RigDeclineCurveCalculator::computeCumulativeProductionExponentialDecline( double initialProductionRateQi,
double initialDeclineRateDi,
double timeSinceStart )
{
double productionRate = computeFlowRateExponentialDecline( initialProductionRateQi, initialDeclineRateDi, timeSinceStart );
return ( 1 / initialDeclineRateDi ) * ( initialProductionRateQi - productionRate );
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
double RigDeclineCurveCalculator::computeCumulativeProductionHarmonicDecline( double initialProductionRateQi,
double initialDeclineRateDi,
double timeSinceStart )
{
double productionRate = computeFlowRateHarmonicDecline( initialProductionRateQi, initialDeclineRateDi, timeSinceStart );
return ( initialProductionRateQi / initialDeclineRateDi ) * std::log( initialProductionRateQi / productionRate );
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
double RigDeclineCurveCalculator::computeCumulativeProductionHyperbolicDecline( double initialProductionRateQi,
double initialDeclineRateDi,
double timeSinceStart,
double hyperbolicDeclineConstantB )
{
double productionRate =
computeFlowRateHyperbolicDecline( initialProductionRateQi, initialDeclineRateDi, timeSinceStart, hyperbolicDeclineConstantB );
return ( std::pow( initialProductionRateQi, hyperbolicDeclineConstantB ) / ( ( 1.0 - hyperbolicDeclineConstantB ) * initialDeclineRateDi ) ) *
( std::pow( initialProductionRateQi, 1.0 - hyperbolicDeclineConstantB ) -
std::pow( productionRate, 1.0 - hyperbolicDeclineConstantB ) );
}

50
ApplicationLibCode/ReservoirDataModel/RigDeclineCurveCalculator.h Normal file
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@@ -0,0 +1,50 @@
/////////////////////////////////////////////////////////////////////////////////
//
// Copyright (C) 2023- Equinor ASA
//
// ResInsight 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.
//
// ResInsight 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 at <http://www.gnu.org/licenses/gpl.html>
// for more details.
//
/////////////////////////////////////////////////////////////////////////////////
#pragma once
//==================================================================================================
//
//
//
//==================================================================================================
class RigDeclineCurveCalculator
{
public:
static double computeDeclineRate( double time0, double value0, double time1, double value1 );
static double computeFlowRateExponentialDecline( double initialProductionRateQi, double initialDeclineRateDi, double timeSinceStart );
static double computeFlowRateHarmonicDecline( double initialProductionRateQi, double initialDeclineRateDi, double timeSinceStart );
static double computeFlowRateHyperbolicDecline( double initialProductionRateQi,
double initialDeclineRateDi,
double timeSinceStart,
double hyperbolicDeclineConstantB );
static double
computeCumulativeProductionExponentialDecline( double initialProductionRateQi, double initialDeclineRateDi, double timeSinceStart );
static double
computeCumulativeProductionHarmonicDecline( double initialProductionRateQi, double initialDeclineRateDi, double timeSinceStart );
static double computeCumulativeProductionHyperbolicDecline( double initialProductionRateQi,
double initialDeclineRateDi,
double timeSinceStart,
double hyperbolicDeclineConstantB );
};