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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/UnitTests/CMakeLists_files.cmake
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@@ -90,6 +90,7 @@ set(SOURCE_GROUP_SOURCE_FILES
${CMAKE_CURRENT_LIST_DIR}/RifRevealCsvSummaryReader-Test.cpp
${CMAKE_CURRENT_LIST_DIR}/RifStimPlanCsvSummaryReader-Test.cpp
${CMAKE_CURRENT_LIST_DIR}/RiaEnsembleNameTools-Test.cpp
${CMAKE_CURRENT_LIST_DIR}/RigDeclineCurveCalculator-Test.cpp
)
if(RESINSIGHT_ENABLE_GRPC)

57
ApplicationLibCode/UnitTests/RigDeclineCurveCalculator-Test.cpp Normal file
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@@ -0,0 +1,57 @@
/////////////////////////////////////////////////////////////////////////////////
//
// 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 "gtest/gtest.h"
#include "RigDeclineCurveCalculator.h"
// Test case from https://web.archive.org/web/20120710104333/http://infohost.nmt.edu/~petro/faculty/Kelly/Deline.pdf
// Example Problem 8-1:
// "Given that a well has declined from 100 stb/day to 96 stb/day during a one-month period,
// use the exponential decline model to perform the following tasks:
// Predict the production rate after 11 more months."
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
TEST( RigDeclineCurveCalculatorTests, computeDeclineRateExample )
{
double t0 = 0.0;
double q0 = 100.0;
double t1 = 1.0;
double q1 = 96.0;
double expectedDeclineRateDi = 0.04082;
double declineRate = RigDeclineCurveCalculator::computeDeclineRate( t0, q0, t1, q1 );
EXPECT_NEAR( expectedDeclineRateDi, declineRate, 0.005 );
}
//--------------------------------------------------------------------------------------------------
///
//--------------------------------------------------------------------------------------------------
TEST( RigDeclineCurveCalculatorTests, exponentialFlowRateExample )
{
double initialProductionRateQi = 96.0;
double initialDeclineRateDi = 0.04082;
double timeSinceStart = 11.0;
double q = RigDeclineCurveCalculator::computeFlowRateExponentialDecline( initialProductionRateQi, initialDeclineRateDi, timeSinceStart );
EXPECT_NEAR( q, 61.27, 0.005 );
}