From 0b96b31d8c56f1e18353e12804ff5f29674f305e Mon Sep 17 00:00:00 2001
From: Tor Harald Sandve <tosa@norceresearch.no>
Date: Mon, 30 Sep 2019 15:26:47 +0200
Subject: [PATCH] add some safaguards for trivial guiderates

---
 opm/simulators/wells/WellGroupHelpers.hpp | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/opm/simulators/wells/WellGroupHelpers.hpp b/opm/simulators/wells/WellGroupHelpers.hpp
index a74fdeac1..c36cb2e5c 100644
--- a/opm/simulators/wells/WellGroupHelpers.hpp
+++ b/opm/simulators/wells/WellGroupHelpers.hpp
@@ -215,6 +215,10 @@ namespace Opm {
 
             groupTotalGuideRate += guideRate->get(wellName, wellTarget);
         }
+
+        if (groupTotalGuideRate == 0.0)
+            return 0.0;
+
         double wellGuideRate = guideRate->get(well.name(), wellTarget);
         return wellGuideRate / groupTotalGuideRate;
     }
@@ -231,6 +235,9 @@ namespace Opm {
                 groupTotalGuideRate += guideRate->get(groupName, groupTarget);
             }
         }
+        if (groupTotalGuideRate == 0.0)
+            return 0.0;
+
         double groupGuideRate = guideRate->get(group.name(), groupTarget);
         return groupGuideRate / groupTotalGuideRate;
     }