diff --git a/ApplicationCode/ProjectDataModel/RimCaseCollection.cpp b/ApplicationCode/ProjectDataModel/RimCaseCollection.cpp
index 8001c8bffe..9840dddd6a 100644
--- a/ApplicationCode/ProjectDataModel/RimCaseCollection.cpp
+++ b/ApplicationCode/ProjectDataModel/RimCaseCollection.cpp
@@ -40,5 +40,5 @@ RimCaseCollection::RimCaseCollection()
 //--------------------------------------------------------------------------------------------------
 RimCaseCollection::~RimCaseCollection()
 {
-
+    reservoirs.deleteAllChildObjects();
 }
diff --git a/ApplicationCode/ProjectDataModel/RimIdenticalGridCaseGroup.cpp b/ApplicationCode/ProjectDataModel/RimIdenticalGridCaseGroup.cpp
index eab45f8957..21574c36be 100644
--- a/ApplicationCode/ProjectDataModel/RimIdenticalGridCaseGroup.cpp
+++ b/ApplicationCode/ProjectDataModel/RimIdenticalGridCaseGroup.cpp
@@ -52,7 +52,13 @@ RimIdenticalGridCaseGroup::RimIdenticalGridCaseGroup()
 //--------------------------------------------------------------------------------------------------
 RimIdenticalGridCaseGroup::~RimIdenticalGridCaseGroup()
 {
+    m_mainGrid = NULL;
 
+    delete caseCollection;
+    caseCollection = NULL;
+
+    delete statisticalReservoirCollection;
+    statisticalReservoirCollection = NULL;
 }
 
 //--------------------------------------------------------------------------------------------------
diff --git a/ApplicationCode/ProjectDataModel/RimStatisticalCollection.cpp b/ApplicationCode/ProjectDataModel/RimStatisticalCollection.cpp
index da22bc2b29..3b8a5f6436 100644
--- a/ApplicationCode/ProjectDataModel/RimStatisticalCollection.cpp
+++ b/ApplicationCode/ProjectDataModel/RimStatisticalCollection.cpp
@@ -42,7 +42,7 @@ RimStatisticalCollection::RimStatisticalCollection()
 //--------------------------------------------------------------------------------------------------
 RimStatisticalCollection::~RimStatisticalCollection()
 {
-
+    reservoirs.deleteAllChildObjects();
 }
 
 //--------------------------------------------------------------------------------------------------