From 38dd81ba7e825d94692d894d7304977868e6a9cb Mon Sep 17 00:00:00 2001
From: Tor Harald Sandve <tor.harald.sandve@iris.no>
Date: Tue, 6 Nov 2018 09:02:30 +0100
Subject: [PATCH] Avoid output of trivial fipnum regions

---
 ebos/ecloutputblackoilmodule.hh | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/ebos/ecloutputblackoilmodule.hh b/ebos/ecloutputblackoilmodule.hh
index 3e20f148f..18951386a 100644
--- a/ebos/ecloutputblackoilmodule.hh
+++ b/ebos/ecloutputblackoilmodule.hh
@@ -1249,6 +1249,10 @@ private:
         if (forceDisableFipOutput_)
             return;
 
+        // don't output FIPNUM report if the region has no porv.
+        if (cip[FipDataType::PoreVolume] == 0)
+            return;
+
         const Opm::UnitSystem& units = simulator_.vanguard().eclState().getUnits();
         std::ostringstream ss;
         if (!reg) {