diff --git a/ApplicationCode/ProjectDataModel/RimEclipseCase.cpp b/ApplicationCode/ProjectDataModel/RimEclipseCase.cpp
index 42152e78a6..040e22007a 100644
--- a/ApplicationCode/ProjectDataModel/RimEclipseCase.cpp
+++ b/ApplicationCode/ProjectDataModel/RimEclipseCase.cpp
@@ -534,7 +534,7 @@ cvf::Vec3d RimEclipseCase::displayModelOffset() const
 //--------------------------------------------------------------------------------------------------
 /// 
 //--------------------------------------------------------------------------------------------------
-RimReservoirCellResultsStorage* RimEclipseCase::results(RifReaderInterface::PorosityModelResultType porosityModel)
+RimReservoirCellResultsStorage* RimEclipseCase::results(RifReaderInterface::PorosityModelResultType porosityModel) const
 {
     if (porosityModel == RifReaderInterface::MATRIX_RESULTS)
     {
diff --git a/ApplicationCode/ProjectDataModel/RimEclipseCase.h b/ApplicationCode/ProjectDataModel/RimEclipseCase.h
index e6060f8f64..a156f2dedb 100644
--- a/ApplicationCode/ProjectDataModel/RimEclipseCase.h
+++ b/ApplicationCode/ProjectDataModel/RimEclipseCase.h
@@ -72,7 +72,7 @@ public:
     const RigEclipseCaseData*                   eclipseCaseData() const;
     cvf::Color3f                                defaultWellColor(const QString& wellName);
 
-    RimReservoirCellResultsStorage*             results(RifReaderInterface::PorosityModelResultType porosityModel);
+    RimReservoirCellResultsStorage*             results(RifReaderInterface::PorosityModelResultType porosityModel) const ;
                                                       
     RimEclipseView*                             createAndAddReservoirView();
     RimEclipseView*                             createCopyAndAddView(const RimEclipseView* sourceView);
diff --git a/ApplicationCode/ReservoirDataModel/RigAllGridCellsResultAccessor.cpp b/ApplicationCode/ReservoirDataModel/RigAllGridCellsResultAccessor.cpp
index 33810175fb..5281d2de14 100644
--- a/ApplicationCode/ReservoirDataModel/RigAllGridCellsResultAccessor.cpp
+++ b/ApplicationCode/ReservoirDataModel/RigAllGridCellsResultAccessor.cpp
@@ -27,7 +27,7 @@
 //--------------------------------------------------------------------------------------------------
 /// 
 //--------------------------------------------------------------------------------------------------
-RigAllGridCellsResultAccessor::RigAllGridCellsResultAccessor(const RigGridBase* grid, std::vector<double>* reservoirResultValues)
+RigAllGridCellsResultAccessor::RigAllGridCellsResultAccessor(const RigGridBase* grid, const std::vector<double>* reservoirResultValues)
     : m_grid(grid),
     m_reservoirResultValues(reservoirResultValues)
 {
diff --git a/ApplicationCode/ReservoirDataModel/RigAllGridCellsResultAccessor.h b/ApplicationCode/ReservoirDataModel/RigAllGridCellsResultAccessor.h
index 57ab007bc7..81c9298b33 100644
--- a/ApplicationCode/ReservoirDataModel/RigAllGridCellsResultAccessor.h
+++ b/ApplicationCode/ReservoirDataModel/RigAllGridCellsResultAccessor.h
@@ -30,7 +30,7 @@ class RigGridBase;
 class RigAllGridCellsResultAccessor : public RigResultAccessor
 {
 public:
-    RigAllGridCellsResultAccessor(const RigGridBase* grid, std::vector<double>* reservoirResultValues);
+    RigAllGridCellsResultAccessor(const RigGridBase* grid, const std::vector<double>* reservoirResultValues);
 
     virtual double  cellScalar(size_t gridLocalCellIndex) const;
     virtual double  cellFaceScalar(size_t gridLocalCellIndex, cvf::StructGridInterface::FaceType faceId) const;
@@ -39,7 +39,7 @@ public:
 
 private:
     const RigGridBase*      m_grid;
-    std::vector<double>*    m_reservoirResultValues;
+    const std::vector<double>*    m_reservoirResultValues;
 };
 
 
diff --git a/ApplicationCode/ReservoirDataModel/RigResultAccessorFactory.cpp b/ApplicationCode/ReservoirDataModel/RigResultAccessorFactory.cpp
index 5b1411e14e..e0fdc6bea8 100644
--- a/ApplicationCode/ReservoirDataModel/RigResultAccessorFactory.cpp
+++ b/ApplicationCode/ReservoirDataModel/RigResultAccessorFactory.cpp
@@ -39,7 +39,7 @@
 //--------------------------------------------------------------------------------------------------
 /// 
 //--------------------------------------------------------------------------------------------------
-cvf::ref<RigResultAccessor> RigResultAccessorFactory::createFromUiResultName(RigEclipseCaseData* eclipseCase,
+cvf::ref<RigResultAccessor> RigResultAccessorFactory::createFromUiResultName(const RigEclipseCaseData* eclipseCase,
                                                                              size_t gridIndex,
                                                                              RifReaderInterface::PorosityModelResultType porosityModel,
                                                                              size_t timeStepIndex,
@@ -50,7 +50,7 @@ cvf::ref<RigResultAccessor> RigResultAccessorFactory::createFromUiResultName(Rig
     CVF_ASSERT(eclipseCase->results(porosityModel));
     CVF_ASSERT(eclipseCase->activeCellInfo(porosityModel));
 
-    RigGridBase* grid = eclipseCase->grid(gridIndex);
+    const RigGridBase* grid = eclipseCase->grid(gridIndex);
 
     if (uiResultName == RimDefines::combinedTransmissibilityResultName())
     {
@@ -132,7 +132,7 @@ cvf::ref<RigResultAccessor> RigResultAccessorFactory::createFromUiResultName(Rig
 //--------------------------------------------------------------------------------------------------
 /// 
 //--------------------------------------------------------------------------------------------------
-cvf::ref<RigResultAccessor> RigResultAccessorFactory::createFromNameAndType(RigEclipseCaseData* eclipseCase,
+cvf::ref<RigResultAccessor> RigResultAccessorFactory::createFromNameAndType(const RigEclipseCaseData* eclipseCase,
                                                                             size_t gridIndex,
                                                                             RifReaderInterface::PorosityModelResultType porosityModel,
                                                                             size_t timeStepIndex,
@@ -167,7 +167,7 @@ cvf::ref<RigResultAccessor> RigResultAccessorFactory::createFromNameAndType(RigE
 //--------------------------------------------------------------------------------------------------
 /// 
 //--------------------------------------------------------------------------------------------------
-cvf::ref<RigResultAccessor> RigResultAccessorFactory::createFromResultDefinition(RigEclipseCaseData* eclipseCase,
+cvf::ref<RigResultAccessor> RigResultAccessorFactory::createFromResultDefinition(const RigEclipseCaseData* eclipseCase,
                                                                                  size_t gridIndex,
                                                                                  size_t timeStepIndex,
                                                                                  RimEclipseResultDefinition* resultDefinition)
@@ -197,7 +197,7 @@ cvf::ref<RigResultAccessor> RigResultAccessorFactory::createFromResultDefinition
         const std::vector<double>* resultValues = flowSol->flowDiagResults()->resultValues( resultDefinition->flowDiagResAddress(), timeStepIndex);
         if (!resultValues) return new RigHugeValResultAccessor;
 
-        RigGridBase* grid = eclipseCase->grid(gridIndex);
+        const RigGridBase* grid = eclipseCase->grid(gridIndex);
         if ( !grid ) return new RigHugeValResultAccessor;
 
         cvf::ref<RigResultAccessor> object = new RigActiveCellsResultAccessor(grid, resultValues, eclipseCase->activeCellInfo(porosityModel));
@@ -209,7 +209,7 @@ cvf::ref<RigResultAccessor> RigResultAccessorFactory::createFromResultDefinition
 //--------------------------------------------------------------------------------------------------
 /// This function must be harmonized with RigResultModifierFactory::createResultModifier()
 //--------------------------------------------------------------------------------------------------
-cvf::ref<RigResultAccessor> RigResultAccessorFactory::createNativeFromUiResultName(RigEclipseCaseData* eclipseCase,
+cvf::ref<RigResultAccessor> RigResultAccessorFactory::createNativeFromUiResultName(const RigEclipseCaseData* eclipseCase,
                                                                                    size_t gridIndex,
                                                                                    RifReaderInterface::PorosityModelResultType porosityModel,
                                                                                    size_t timeStepIndex,
@@ -237,7 +237,7 @@ cvf::ref<RigResultAccessor> RigResultAccessorFactory::createNativeFromUiResultNa
 //--------------------------------------------------------------------------------------------------
 /// 
 //--------------------------------------------------------------------------------------------------
-cvf::ref<RigResultAccessor> RigResultAccessorFactory::createFromResultIdx(RigEclipseCaseData* eclipseCase,
+cvf::ref<RigResultAccessor> RigResultAccessorFactory::createFromResultIdx(const RigEclipseCaseData* eclipseCase,
                                                                           size_t gridIndex,
                                                                           RifReaderInterface::PorosityModelResultType porosityModel,
                                                                           size_t timeStepIndex,
@@ -250,17 +250,17 @@ cvf::ref<RigResultAccessor> RigResultAccessorFactory::createFromResultIdx(RigEcl
 
     if (!eclipseCase) return NULL;
 
-    RigGridBase* grid = eclipseCase->grid(gridIndex);
+    const RigGridBase* grid = eclipseCase->grid(gridIndex);
     if (!grid) return NULL;
 
-    std::vector< std::vector<double> >& scalarSetResults = eclipseCase->results(porosityModel)->cellScalarResults(resultIndex);
+    const std::vector< std::vector<double> >& scalarSetResults = eclipseCase->results(porosityModel)->cellScalarResults(resultIndex);
 
     if (timeStepIndex >= scalarSetResults.size())
     {
         return new RigHugeValResultAccessor;
     }
 
-    std::vector<double>* resultValues = NULL;
+    const std::vector<double>* resultValues = NULL;
     if (timeStepIndex < scalarSetResults.size())
     {
         resultValues = &(scalarSetResults[timeStepIndex]);
diff --git a/ApplicationCode/ReservoirDataModel/RigResultAccessorFactory.h b/ApplicationCode/ReservoirDataModel/RigResultAccessorFactory.h
index 5cb2e83b13..4594cf8fbc 100644
--- a/ApplicationCode/ReservoirDataModel/RigResultAccessorFactory.h
+++ b/ApplicationCode/ReservoirDataModel/RigResultAccessorFactory.h
@@ -33,20 +33,20 @@ class RigResultAccessorFactory
 {
 public:
     static cvf::ref<RigResultAccessor>
-        createFromResultDefinition(RigEclipseCaseData* eclipseCase,
+        createFromResultDefinition(const RigEclipseCaseData* eclipseCase,
                                    size_t gridIndex,
                                    size_t timeStepIndex,
                                    RimEclipseResultDefinition* resultDefinition);
 
     static cvf::ref<RigResultAccessor>
-        createFromUiResultName(RigEclipseCaseData* eclipseCase,
+        createFromUiResultName(const RigEclipseCaseData* eclipseCase,
                                size_t gridIndex,
                                RifReaderInterface::PorosityModelResultType porosityModel,
                                size_t timeStepIndex,
                                const QString& uiResultName);
 
     static cvf::ref<RigResultAccessor>
-        createFromNameAndType(RigEclipseCaseData* eclipseCase,
+        createFromNameAndType(const RigEclipseCaseData* eclipseCase,
                               size_t gridIndex,
                               RifReaderInterface::PorosityModelResultType porosityModel,
                               size_t timeStepIndex,
@@ -54,7 +54,7 @@ public:
                               RimDefines::ResultCatType resultType);
 
     static cvf::ref<RigResultAccessor>
-        createFromResultIdx(RigEclipseCaseData* eclipseCase,
+        createFromResultIdx(const RigEclipseCaseData* eclipseCase,
                             size_t gridIndex,
                             RifReaderInterface::PorosityModelResultType porosityModel,
                             size_t timeStepIndex,
@@ -62,7 +62,7 @@ public:
 
 private:
     static cvf::ref<RigResultAccessor>
-        createNativeFromUiResultName(RigEclipseCaseData* eclipseCase,
+        createNativeFromUiResultName(const RigEclipseCaseData* eclipseCase,
                                      size_t gridIndex,
                                      RifReaderInterface::PorosityModelResultType porosityModel,
                                      size_t timeStepIndex,