diff --git a/opm/core/wells/InjectionSpecification.cpp b/opm/core/wells/InjectionSpecification.cpp
index 34201246..12a3cf06 100644
--- a/opm/core/wells/InjectionSpecification.cpp
+++ b/opm/core/wells/InjectionSpecification.cpp
@@ -18,4 +18,80 @@ namespace Opm
 
     }
 
+    const std::string
+    InjectionSpecification::ControlMode2String(const ControlMode& mode)
+    {
+        std::string stringValue;
+
+        switch(mode) {
+        case ControlMode::NONE:
+            stringValue = "NONE";
+            break;
+        case ControlMode::RATE:
+            stringValue = "RATE";
+            break;
+        case ControlMode::RESV:
+            stringValue = "RESV";
+            break;
+        case ControlMode::BHP:
+            stringValue = "BHP";
+            break;
+        case ControlMode::THP:
+            stringValue = "THP";
+            break;
+        case ControlMode::REIN:
+            stringValue = "REIN";
+            break;
+        case ControlMode::VREP:
+            stringValue = "VREP";
+            break;
+        case ControlMode::GRUP:
+            stringValue = "GRUP";
+            break;
+        case ControlMode::FLD:
+            stringValue = "FLD";
+            break;
+        }
+
+        return stringValue;
+    }
+
+
+    const std::string
+    InjectionSpecification::InjectorType2String(const InjectorType& type)
+    {
+        std::string stringValue;
+
+        switch(type) {
+        case InjectorType::WATER:
+            stringValue = "WATER";
+            break;
+        case InjectorType::OIL:
+            stringValue = "OIL";
+            break;
+        case InjectorType::GAS:
+            stringValue = "GAS";
+            break;
+        }
+
+        return stringValue;
+    }
+
+
+    const std::string 
+    InjectionSpecification::GuideRateType2String(const GuideRateType& type)
+    {
+        std::string stringValue;
+        
+        switch(type) {
+        case GuideRateType::RAT:
+            stringValue = "RAT";
+            break;
+        case GuideRateType::NONE_GRT:
+            stringValue = "NONE_GRT";
+            break;
+        }
+
+        return stringValue;
+    }
 } // namespace Opm
diff --git a/opm/core/wells/InjectionSpecification.hpp b/opm/core/wells/InjectionSpecification.hpp
index 74d20f6a..db324233 100644
--- a/opm/core/wells/InjectionSpecification.hpp
+++ b/opm/core/wells/InjectionSpecification.hpp
@@ -2,6 +2,7 @@
 #define	OPM_INJECTORSPECIFICATION_HPP
 
 #include <opm/core/wells.h>
+#include <string>
 
 namespace Opm
 {
@@ -25,7 +26,9 @@ namespace Opm
         };
 
         InjectionSpecification();
-
+        const std::string ControlMode2String(const ControlMode& mode);
+        const std::string InjectorType2String(const InjectorType& type);
+        const std::string GuideRateType2String(const GuideRateType& type);
         InjectorType injector_type_;
         ControlMode control_mode_;
         double surface_flow_max_rate_;
diff --git a/opm/core/wells/ProductionSpecification.cpp b/opm/core/wells/ProductionSpecification.cpp
index 1c6d443a..2cccd545 100644
--- a/opm/core/wells/ProductionSpecification.cpp
+++ b/opm/core/wells/ProductionSpecification.cpp
@@ -19,4 +19,98 @@ namespace Opm
     {
     }
 
+
+    const std::string
+    ProductionSpecification::ControlMode2String(const ControlMode& mode)
+    {
+        std::string stringValue;
+
+        switch(mode) {
+        case ControlMode::NONE:
+            stringValue = "NONE";
+            break;
+        case ControlMode::ORAT:
+            stringValue = "ORAT";
+            break;
+        case ControlMode::WRAT:
+            stringValue = "WRAT";
+            break;
+        case ControlMode::GRAT:
+            stringValue = "GRAT";
+            break;
+        case ControlMode::LRAT:
+            stringValue = "LRAT";
+            break;
+        case ControlMode::CRAT:
+            stringValue = "CRAT";
+            break;
+        case ControlMode::RESV:
+            stringValue = "RESV";
+            break;
+        case ControlMode::PRBL:
+            stringValue = "RPBL";
+            break;
+        case ControlMode::BHP:
+            stringValue = "BHP";
+            break;
+        case ControlMode::THP:
+            stringValue = "THP";
+            break;
+        case ControlMode::GRUP:
+            stringValue = "GRUP";
+            break;
+        case ControlMode::FLD:
+            stringValue = "FLD";
+            break;
+        }
+
+        return stringValue;
+    }
+
+
+    const std::string 
+    ProductionSpecification::Procedure2String(const Procedure& type)
+    {
+        std::string stringValue;
+
+        switch(type) {
+        case Procedure::NONE_P:
+            stringValue = "NONE_P";
+            break;
+        case Procedure::RATE:
+            stringValue = "RATE";
+            break;
+        case Procedure::WELL:
+            stringValue = "WELL";
+            break;
+        }
+
+        return stringValue;
+    }
+
+
+    const std::string 
+    ProductionSpecification::GuideRateType2String(const GuideRateType& type)
+    {
+        std::string stringValue;
+        
+        switch(type) {
+        case GuideRateType::OIL:
+            stringValue = "OIL";
+            break;
+        case GuideRateType::GAS:
+            stringValue = "GAS";
+            break;
+        case GuideRateType::WATER:
+            stringValue = "WATER";
+            break;
+        case GuideRateType::NONE_GRT:
+            stringValue = "NONE_GRT";
+            break;
+        }
+
+        return stringValue;
+    }
+
+
 }
diff --git a/opm/core/wells/ProductionSpecification.hpp b/opm/core/wells/ProductionSpecification.hpp
index 6d064a2f..5d644301 100644
--- a/opm/core/wells/ProductionSpecification.hpp
+++ b/opm/core/wells/ProductionSpecification.hpp
@@ -2,6 +2,7 @@
 #define	OPM_PRODUCTIONSPECIFICATION_HPP
 
 #include <opm/core/wells.h>
+#include <string>
 
 namespace Opm
 {
@@ -25,6 +26,9 @@ namespace Opm
         };
 
         ProductionSpecification();
+        const std::string ControlMode2String(const ControlMode& mode);
+        const std::string Procedure2String(const Procedure& type);
+        const std::string GuideRateType2String(const GuideRateType& type);
 
         ControlMode control_mode_;
         Procedure procedure_;