diff --git a/ApplicationCode/CMakeLists.txt b/ApplicationCode/CMakeLists.txt
index 8902977fa5..dedf4dd2ba 100644
--- a/ApplicationCode/CMakeLists.txt
+++ b/ApplicationCode/CMakeLists.txt
@@ -54,6 +54,7 @@ list( APPEND CPP_SOURCES
 )
 
 list( APPEND CPP_SOURCES
+    ProjectDataModel/RimCaseCollection.cpp
     ProjectDataModel/RimCellFilter.cpp
     ProjectDataModel/RimCellPropertyFilter.cpp
     ProjectDataModel/RimCellPropertyFilterCollection.cpp
diff --git a/ApplicationCode/ProjectDataModel/RimCaseCollection.cpp b/ApplicationCode/ProjectDataModel/RimCaseCollection.cpp
new file mode 100644
index 0000000000..8001c8bffe
--- /dev/null
+++ b/ApplicationCode/ProjectDataModel/RimCaseCollection.cpp
@@ -0,0 +1,44 @@
+/////////////////////////////////////////////////////////////////////////////////
+//
+//  Copyright (C) 2011-2012 Statoil ASA, Ceetron AS
+// 
+//  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 "RIStdInclude.h"
+
+
+#include "RimCaseCollection.h"
+
+#include "RimReservoirView.h"
+
+CAF_PDM_SOURCE_INIT(RimCaseCollection, "RimCaseCollection");
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+RimCaseCollection::RimCaseCollection()
+{
+    CAF_PDM_InitObject("Derived Statistics", "", "", "");
+
+    CAF_PDM_InitFieldNoDefault(&reservoirs, "Reservoirs", "",  "", "", "");
+}
+
+//--------------------------------------------------------------------------------------------------
+/// 
+//--------------------------------------------------------------------------------------------------
+RimCaseCollection::~RimCaseCollection()
+{
+
+}
diff --git a/ApplicationCode/ProjectDataModel/RimCaseCollection.h b/ApplicationCode/ProjectDataModel/RimCaseCollection.h
new file mode 100644
index 0000000000..137435fc32
--- /dev/null
+++ b/ApplicationCode/ProjectDataModel/RimCaseCollection.h
@@ -0,0 +1,47 @@
+/////////////////////////////////////////////////////////////////////////////////
+//
+//  Copyright (C) 2011-2012 Statoil ASA, Ceetron AS
+// 
+//  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
+
+#include "cvfBase.h"
+#include "cvfObject.h"
+#include "cafPdmField.h"
+#include "cafPdmObject.h"
+
+#include "RimStatisticalCalculation.h"
+
+
+
+//==================================================================================================
+//
+// 
+//
+//==================================================================================================
+class RimCaseCollection : public caf::PdmObject
+{
+    CAF_PDM_HEADER_INIT;
+
+public:
+    RimCaseCollection();
+    virtual ~RimCaseCollection();
+
+    caf::PdmPointersField<RimReservoir*> reservoirs;
+
+private:
+
+};
diff --git a/ApplicationCode/ProjectDataModel/RimIdenticalGridCaseGroup.cpp b/ApplicationCode/ProjectDataModel/RimIdenticalGridCaseGroup.cpp
index 1acf612561..d206de060b 100644
--- a/ApplicationCode/ProjectDataModel/RimIdenticalGridCaseGroup.cpp
+++ b/ApplicationCode/ProjectDataModel/RimIdenticalGridCaseGroup.cpp
@@ -1,4 +1,5 @@
 /////////////////////////////////////////////////////////////////////////////////
+/////////////////////////////////////////////////////////////////////////////////
 //
 //  Copyright (C) 2011-2012 Statoil ASA, Ceetron AS
 // 
@@ -38,10 +39,10 @@ RimIdenticalGridCaseGroup::RimIdenticalGridCaseGroup()
 
     CAF_PDM_InitField(&name,    "UserDescription",  QString("Identical Grid Case Group"), "Name", "", "", "");
 
-    CAF_PDM_InitFieldNoDefault(&reservoirs, "Reservoirs", "",  "", "", "");
-    
-    CAF_PDM_InitFieldNoDefault(&statisticalReservoirCollection, "StatisticalReservoirCollection", "StatisticalReservoirCollection", "", "", "");
+    CAF_PDM_InitFieldNoDefault(&caseCollection, "CaseCollection", "Cases", "", "", "");
+    CAF_PDM_InitFieldNoDefault(&statisticalReservoirCollection, "StatisticalReservoirCollection", "Derived Statistics", "", "", "");
 
+    caseCollection = new RimCaseCollection;
     statisticalReservoirCollection = new RimStatisticalCollection;
 
 }
@@ -69,16 +70,10 @@ void RimIdenticalGridCaseGroup::addCase(RimReservoir* reservoir)
     {
         m_mainGrid = incomingMainGrid;
     }
-    else
-    {
-        if (m_mainGrid.p() != incomingMainGrid)
-        {
-            CVF_ASSERT(false);
-            return;
-        }
-    }
 
-    reservoirs.push_back(reservoir);
+    CVF_ASSERT(m_mainGrid.p() == incomingMainGrid);
+ 
+    caseCollection()->reservoirs().push_back(reservoir);
 }
 
 //--------------------------------------------------------------------------------------------------
diff --git a/ApplicationCode/ProjectDataModel/RimIdenticalGridCaseGroup.h b/ApplicationCode/ProjectDataModel/RimIdenticalGridCaseGroup.h
index a0db771b7b..909ad78283 100644
--- a/ApplicationCode/ProjectDataModel/RimIdenticalGridCaseGroup.h
+++ b/ApplicationCode/ProjectDataModel/RimIdenticalGridCaseGroup.h
@@ -24,6 +24,7 @@
 #include "cafPdmObject.h"
 
 #include "RimStatisticalCollection.h"
+#include "RimCaseCollection.h"
 
 class RimReservoir;
 class RigMainGrid;
@@ -45,7 +46,7 @@ public:
 
     void addCase(RimReservoir* reservoir);
 
-    caf::PdmPointersField<RimReservoir*>        reservoirs;
+    caf::PdmField<RimCaseCollection*>           caseCollection;
     caf::PdmField<RimStatisticalCollection*>    statisticalReservoirCollection;
 
     RigMainGrid* mainGrid();
diff --git a/ApplicationCode/ProjectDataModel/RimProject.cpp b/ApplicationCode/ProjectDataModel/RimProject.cpp
index 670ad8f481..06747c47e8 100644
--- a/ApplicationCode/ProjectDataModel/RimProject.cpp
+++ b/ApplicationCode/ProjectDataModel/RimProject.cpp
@@ -201,9 +201,9 @@ void RimProject::removeEclipseCaseFromAllGroups(RimReservoir* reservoir)
     {
         RimIdenticalGridCaseGroup* cg = caseGroups()[i];
 
-        cg->reservoirs().removeChildObject(reservoir);
+        cg->caseCollection()->reservoirs().removeChildObject(reservoir);
 
-        if (cg->reservoirs().size() == 0)
+        if (cg->caseCollection()->reservoirs().size() == 0)
         {
             emptyCaseGroups.push_back(cg);
         }