From 4dff6fb16843062c57216d78bc8ecea574c61950 Mon Sep 17 00:00:00 2001
From: Markus Blatt <markus@dr-blatt.de>
Date: Mon, 14 Dec 2020 16:14:13 +0100
Subject: [PATCH] Fixes StandardWell::updateProductivityIndex for distributed
 wells.

---
 opm/simulators/wells/StandardWell_impl.hpp | 6 ++++++
 1 file changed, 6 insertions(+)

diff --git a/opm/simulators/wells/StandardWell_impl.hpp b/opm/simulators/wells/StandardWell_impl.hpp
index 758313628..6961239af 100644
--- a/opm/simulators/wells/StandardWell_impl.hpp
+++ b/opm/simulators/wells/StandardWell_impl.hpp
@@ -2281,6 +2281,12 @@ namespace Opm
             connPI += np;
         }
 
+        //  Sum with communication in case of distributed well.
+        const auto& comm = this->parallel_well_info_.communication();
+        if (comm.size() > 1)
+        {
+            comm.sum(wellPI, np);
+        }
         assert (static_cast<int>(subsetPerfID) == this->number_of_perforations_ &&
                 "Internal logic error in processing connections for PI/II");
     }