added defns for activity with none

David Price
Commit 4293650263ecb79d8da233bb73ab2164edde6870 42936502 1 parent f1d0e167
Showing 1 changed file with 160 additions and 32 deletions
www.reportinghub.no/ep/schema/1.0/SCHEMA_EP-ACTIVITY-v1.0.ttl
--- a/www.reportinghub.no/ep/schema/1.0/SCHEMA_EP-ACTIVITY-v1.0.ttl
View file @4293650
+++ b/www.reportinghub.no/ep/schema/1.0/SCHEMA_EP-ACTIVITY-v1.0.ttl
View file @4293650
@@ -18,11 +18,12 @@
 <http://www.reportinghub.no/ep/schema/1.0/activity>
       rdf:type owl:Ontology ;
-      owl:imports <http://www.reportinghub.no/ep/schema/1.0/organization> , <http://www.reportinghub.no/ep/schema/1.0/equipment> , <http://www.reportinghub.no/ep/schema/1.0/report> , <http://www.reportinghub.no/ep/schema/1.0/material> , <http://www.reportinghub.no/ep/schema/1.0/well> , <http://www.linkedmodel.org/1.1/schema/ordered> , <http://www.reportinghub.no/ep/schema/1.0/core> , <http://www.reportinghub.no/ep/schema/1.0/facility> ;
+      owl:imports <http://www.linkedmodel.org/1.1/schema/ordered> , <http://www.reportinghub.no/ep/schema/1.0/core> , <http://www.reportinghub.no/ep/schema/1.0/equipment> , <http://www.reportinghub.no/ep/schema/1.0/facility> , <http://www.reportinghub.no/ep/schema/1.0/material> , <http://www.reportinghub.no/ep/schema/1.0/organization> , <http://www.reportinghub.no/ep/schema/1.0/report> , <http://www.reportinghub.no/ep/schema/1.0/well> ;
       owl:versionInfo "0.1.0"^^xsd:string .
 ep-activity:Activity
       rdf:type owl:Class ;
+      rdfs:comment "An [activity] is a [possible_individual] that brings about change by causing the [event] that marks the [beginning], or the [event] that marks the [ending] of a [possible_individual]. An activity consists of the temporal parts of those members of [possible_individual] that participate in the activity. The participating temporal parts will be classified by the [participating_role_and_domain] that indicates the role of the temporal part in the [activity]."^^xsd:string ;
       rdfs:label "Activity"^^xsd:string ;
       rdfs:subClassOf ep-core:PhysicalThing ;
       rdfs:subClassOf
@@ -48,62 +49,65 @@ ep-activity:Activity
       rdfs:subClassOf
               [ rdf:type owl:Restriction ;
                 owl:allValuesFrom ep-activity:Activity ;
-                owl:onProperty <http://www.linkedmodel.org/schema/ordered#overlaps>
+                owl:onProperty <http://www.linkedmodel.org/schema/ordered#during>
               ] ;
       rdfs:subClassOf
               [ rdf:type owl:Restriction ;
                 owl:allValuesFrom ep-activity:Activity ;
-                owl:onProperty <http://www.linkedmodel.org/schema/ordered#during>
+                owl:onProperty <http://www.linkedmodel.org/schema/ordered#overlaps>
               ] .
 ep-activity:ActivitySuccessType
       rdf:type rdfs:Class ;
+      rdfs:comment "class of activity on the basis of its success or failure"^^xsd:string ;
       rdfs:label "activity success type"^^xsd:string ;
       rdfs:subClassOf owl:Class .
 ep-activity:DailyDrillingActivity
       rdf:type owl:Class ;
+      rdfs:comment "drilling activity that consists of all that is done in order to drill a well during one day"^^xsd:string ;
       rdfs:label "daily drilling activity"^^xsd:string ;
       rdfs:subClassOf ep-activity:DrillingActivity ;
       rdfs:subClassOf
               [ rdf:type owl:Restriction ;
-                owl:allValuesFrom ep-activity:DrillingActivity ;
+                owl:allValuesFrom <http://www.reportinghub.no/ep/schema/well#AllOrPartOfTheLifeOfAWellBore> ;
-                owl:onProperty <http://www.linkedmodel.org/schema/ordered#first>
+                owl:onProperty ep-activity:onWellBore
               ] ;
       rdfs:subClassOf
               [ rdf:type owl:Restriction ;
-                owl:maxCardinality "1"^^xsd:nonNegativeInteger ;
+                owl:allValuesFrom ep-activity:Activity ;
-                owl:onProperty <http://www.linkedmodel.org/schema/ordered#first>
+                owl:onProperty ep-core:hasPart
               ] ;
       rdfs:subClassOf
               [ rdf:type owl:Restriction ;
-                owl:allValuesFrom <http://www.reportinghub.no/ep/schema/well#AllOrPartOfTheLifeOfAWellBore> ;
+                owl:maxCardinality "1"^^xsd:nonNegativeInteger ;
-                owl:onProperty ep-activity:onWellBore
+                owl:onProperty <http://www.linkedmodel.org/schema/ordered#first>
               ] ;
       rdfs:subClassOf
               [ rdf:type owl:Restriction ;
                 owl:allValuesFrom ep-activity:DrillingActivity ;
-                owl:onProperty <http://www.linkedmodel.org/schema/ordered#last>
+                owl:onProperty <http://www.linkedmodel.org/schema/ordered#first>
               ] ;
       rdfs:subClassOf
               [ rdf:type owl:Restriction ;
-                owl:allValuesFrom ep-activity:Activity ;
+                owl:allValuesFrom ep-activity:DrillingActivity ;
-                owl:onProperty ep-core:hasPart
+                owl:onProperty <http://www.linkedmodel.org/schema/ordered#last>
               ] .
 ep-activity:DailyDrillingActivityToStatus
       rdf:type owl:Class ;
+      rdfs:comment "drilling activity that consists of all that is done in order to drill a well during one day up to the time that a status report is issued"^^xsd:string ;
       rdfs:label "daily drilling activity to status"^^xsd:string ;
       rdfs:subClassOf ep-activity:DrillingActivity ;
       rdfs:subClassOf
               [ rdf:type owl:Restriction ;
-                owl:allValuesFrom ep-activity:Activity ;
+                owl:allValuesFrom <http://www.reportinghub.no/ep/schema/well#AllOrPartOfTheLifeOfAWellBore> ;
-                owl:onProperty ep-core:hasPart
+                owl:onProperty ep-activity:onWellBore
               ] ;
       rdfs:subClassOf
               [ rdf:type owl:Restriction ;
-                owl:allValuesFrom ep-activity:DrillingActivity ;
+                owl:allValuesFrom ep-activity:Activity ;
-                owl:onProperty <http://www.linkedmodel.org/schema/ordered#first>
+                owl:onProperty ep-core:hasPart
               ] ;
       rdfs:subClassOf
               [ rdf:type owl:Restriction ;
@@ -112,8 +116,8 @@ ep-activity:DailyDrillingActivityToStatus
               ] ;
       rdfs:subClassOf
               [ rdf:type owl:Restriction ;
-                owl:allValuesFrom <http://www.reportinghub.no/ep/schema/well#AllOrPartOfTheLifeOfAWellBore> ;
+                owl:allValuesFrom ep-activity:DrillingActivity ;
-                owl:onProperty ep-activity:onWellBore
+                owl:onProperty <http://www.linkedmodel.org/schema/ordered#first>
               ] ;
       rdfs:subClassOf
               [ rdf:type owl:Restriction ;
@@ -159,6 +163,7 @@ ep-activity:Drill-sidetrack
 ep-activity:DrillStemTest
       rdf:type ep-activity:WellTestType , owl:Class ;
+      rdfs:comment "well test that is intended to determine the productive capacity, pressure, permeability or extent (or a combination of these) of a hydrocarbon reservoir, with the drillstring still in the hole"^^xsd:string ;
       rdfs:label "drill stem test"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellTest ;
       dc:description "A test to determine the productive capacity, pressure, permeability or extent (or a combination of these) of a hydrocarbon reservoir, with the drillstring still in the hole."^^xsd:string ;
@@ -166,107 +171,128 @@ ep-activity:DrillStemTest
 ep-activity:DrillingActivity
       rdf:type owl:Class ;
+      rdfs:comment "activity that is carried out in order to drill a well"^^xsd:string ;
       rdfs:label "Drilling activity"^^xsd:string ;
       rdfs:subClassOf ep-activity:Activity .
 ep-activity:DrillingActivity-bop_test
       rdf:type ep-activity:DrillingActivityTypeAccordingToEquipmentType , owl:Class ;
+      rdfs:comment "drilling activity that is a test of a BOP (Blow-Out Preventer) and related well control equipment and systems"^^xsd:string ;
       rdfs:label "drilling activity - BOP test"^^xsd:string ;
       rdfs:subClassOf ep-activity:DrillingActivity .
 ep-activity:DrillingActivity-circulation_loss
       rdf:type ep-activity:DrillingActivityOutcomeType , owl:Class ;
+      rdfs:comment "drilling activity that fails because of the loss of circulation fluid to the surrounding rock formation"^^xsd:string ;
       rdfs:label "drilling activity - circulation loss"^^xsd:string ;
       rdfs:subClassOf ep-activity:DrillingActivity .
 ep-activity:DrillingActivity-coiled_tubing
       rdf:type ep-activity:DrillingActivityTypeAccordingToEquipmentType , owl:Class ;
+      rdfs:comment "drilling activity that is performed using a coiled tubing string and associated equipment. The drilling activity can be a well intervention, drilling or workover."^^xsd:string ;
       rdfs:label "drilling activity - coiled tubing"^^xsd:string ;
       rdfs:subClassOf ep-activity:DrillingActivity .
 ep-activity:DrillingActivity-equipment_failure
       rdf:type ep-activity:DrillingActivityOutcomeType , owl:Class ;
+      rdfs:comment "drilling activity that fails because of an equipment failure"^^xsd:string ;
       rdfs:label "drilling activity - equipment failure"^^xsd:string ;
       rdfs:subClassOf ep-activity:DrillingActivity .
 ep-activity:DrillingActivity-equipment_hang
       rdf:type ep-activity:DrillingActivityOutcomeType , owl:Class ;
+      rdfs:comment "drilling activity that fails because of an equipment hang"^^xsd:string ;
       rdfs:label "drilling activity - equipment hang"^^xsd:string ;
       rdfs:subClassOf ep-activity:DrillingActivity .
 ep-activity:DrillingActivity-fixed_equipment
       rdf:type ep-activity:DrillingActivityTypeAccordingToEquipmentType , owl:Class ;
+      rdfs:comment "drilling activity that is performed using traditional types of drilling equipment and techniques, such a permanently installed and fixed rig and equipment. The drilling activity can be drilling, completion, well-intervention or workover."^^xsd:string ;
       rdfs:label "drilling activity - fixed equipment"^^xsd:string ;
       rdfs:subClassOf ep-activity:DrillingActivity .
 ep-activity:DrillingActivity-injury
       rdf:type ep-activity:DrillingActivityOutcomeType , owl:Class ;
+      rdfs:comment "drilling activity that fails because of an injury"^^xsd:string ;
       rdfs:label "drilling activity- injury"^^xsd:string ;
       rdfs:subClassOf ep-activity:DrillingActivity .
 ep-activity:DrillingActivity-kick
       rdf:type ep-activity:DrillingActivityOutcomeType , owl:Class ;
+      rdfs:comment "drilling activity that fails because of fluid within the surrounding rock formation invading the wellbore"^^xsd:string ;
       rdfs:label "drilling activity - operation kick"^^xsd:string ;
       rdfs:subClassOf ep-activity:DrillingActivity .
 ep-activity:DrillingActivity-mud_loss
       rdf:type ep-activity:DrillingActivityOutcomeType , owl:Class ;
+      rdfs:comment "drilling activity that fails because circulation is prevented by plugging or a failure of equipment"^^xsd:string ;
       rdfs:label "drilling activity - mud loss"^^xsd:string ;
       rdfs:subClassOf ep-activity:DrillingActivity .
 ep-activity:DrillingActivity-operation_failed
       rdf:type ep-activity:DrillingActivityOutcomeType , owl:Class ;
+      rdfs:comment "drilling activity that fails"^^xsd:string ;
       rdfs:label "drilling activity - operation failed"^^xsd:string ;
       rdfs:subClassOf ep-activity:DrillingActivity .
 ep-activity:DrillingActivity-snubbing
       rdf:type ep-activity:DrillingActivityTypeAccordingToEquipmentType , owl:Class ;
+      rdfs:comment "drilling activity that is snubbing and that is performed by equipment not permanently installed on the platform"^^xsd:string ;
       rdfs:label "drilling activity - snubbing"^^xsd:string ;
       rdfs:subClassOf ep-activity:DrillingActivity .
 ep-activity:DrillingActivity-stuck_equipment
       rdf:type ep-activity:DrillingActivityOutcomeType , owl:Class ;
+      rdfs:comment "drilling activity that fails because of equipment stuck in a wellbore"^^xsd:string ;
       rdfs:label "drilling activity - stuck equipment"^^xsd:string ;
       rdfs:subClassOf ep-activity:DrillingActivity .
 ep-activity:DrillingActivity-success
       rdf:type ep-activity:DrillingActivityOutcomeType , owl:Class ;
+      rdfs:comment "drilling activity that succeeds"^^xsd:string ;
       rdfs:label "drilling activity - success"^^xsd:string ;
       rdfs:subClassOf ep-activity:DrillingActivity .
 ep-activity:DrillingActivity-wire_line
       rdf:type ep-activity:DrillingActivityTypeAccordingToEquipmentType , owl:Class ;
+      rdfs:comment "drilling activity that is carried out using a single- or mult-strand wire or cable. The activity can be logging or intervention."^^xsd:string ;
       rdfs:label "drilling activity - wireline"^^xsd:string ;
       rdfs:subClassOf ep-activity:DrillingActivity .
 ep-activity:DrillingActivityOutcomeType
       rdf:type rdfs:Class ;
+      rdfs:comment "class of drilling activity on the basis of its success or reason for failure"^^xsd:string ;
       rdfs:label "drilling activity outcome type"^^xsd:string ;
       rdfs:subClassOf owl:Class .
 ep-activity:DrillingActivityTypeAccordingToEquipmentType
       rdf:type rdfs:Class ;
+      rdfs:comment "class of drilling activity on the basis of the equipment type used"^^xsd:string ;
       rdfs:label "drilling activity type according to equipment type"^^xsd:string ;
       rdfs:subClassOf owl:Class .
 ep-activity:EquipmentFailureAndRepair
       rdf:type owl:Class ;
+      rdfs:comment "activity that is the failure and subsequent repair of an equipment item"^^xsd:string ;
       rdfs:label "equipment failure and repair"^^xsd:string ;
       rdfs:subClassOf ep-activity:Activity .
 ep-activity:ExtractAWellCore
       rdf:type owl:Class ;
+      rdfs:comment "activity that is intended to extract a well core"^^xsd:string ;
       rdfs:label "extract a well core"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellOperation .
 ep-activity:FailedActivity
       rdf:type ep-activity:ActivitySuccessType , owl:Class ;
+      rdfs:comment "activity that fails"^^xsd:string ;
       rdfs:label "failed activity"^^xsd:string ;
       rdfs:subClassOf ep-activity:Activity ;
       owl:disjointWith ep-activity:SuccessfulActivity .
 ep-activity:FluidReading
       rdf:type owl:Class ;
+      rdfs:comment "activity that is intended to measure properties of a drilling fluid"^^xsd:string ;
       rdfs:label "fluid reading"^^xsd:string ;
       rdfs:subClassOf ep-activity:Activity .
@@ -278,65 +304,76 @@ ep-activity:FormationIntegrityTest
 ep-activity:GasReading
       rdf:type owl:Class ;
+      rdfs:comment "activity that is intended to measure properties of a drilling gas"^^xsd:string ;
       rdfs:label "gas reading"^^xsd:string ;
       rdfs:subClassOf ep-activity:Activity .
 ep-activity:GasReading-circulating_background_gas
       rdf:type ep-activity:GasReadingType , owl:Class ;
+      rdfs:comment "gas reading that is of the circulating background gas"^^xsd:string ;
       rdfs:label "gas reading circulating background gas"^^xsd:string ;
       rdfs:subClassOf ep-activity:GasReading ;
-      owl:disjointWith ep-activity:GasReading-flow_check_gas , ep-activity:GasReading-drilling_gas_peak , ep-activity:GasReading-trip_gas , ep-activity:GasReading-shut_down_gas , ep-activity:GasReading-other , ep-activity:GasReading-drilling_background_gas , ep-activity:GasReading-connection_gas , ep-activity:GasReading-no_readings .
+      owl:disjointWith ep-activity:GasReading-connection_gas , ep-activity:GasReading-drilling_background_gas , ep-activity:GasReading-drilling_gas_peak , ep-activity:GasReading-flow_check_gas , ep-activity:GasReading-no_readings , ep-activity:GasReading-other , ep-activity:GasReading-shut_down_gas , ep-activity:GasReading-trip_gas .
 ep-activity:GasReading-connection_gas
       rdf:type ep-activity:GasReadingType , owl:Class ;
+      rdfs:comment "gas reading that is of the connection gas"^^xsd:string ;
       rdfs:label "gas reading connection gas"^^xsd:string ;
       rdfs:subClassOf ep-activity:GasReading ;
-      owl:disjointWith ep-activity:GasReading-flow_check_gas , ep-activity:GasReading-shut_down_gas , ep-activity:GasReading-trip_gas , ep-activity:GasReading-other , ep-activity:GasReading-drilling_gas_peak , ep-activity:GasReading-drilling_background_gas , ep-activity:GasReading-circulating_background_gas , ep-activity:GasReading-no_readings .
+      owl:disjointWith ep-activity:GasReading-circulating_background_gas , ep-activity:GasReading-drilling_background_gas , ep-activity:GasReading-drilling_gas_peak , ep-activity:GasReading-flow_check_gas , ep-activity:GasReading-no_readings , ep-activity:GasReading-other , ep-activity:GasReading-shut_down_gas , ep-activity:GasReading-trip_gas .
 ep-activity:GasReading-drilling_background_gas
       rdf:type ep-activity:GasReadingType , owl:Class ;
+      rdfs:comment "gas reading that is of the drilling background gas"^^xsd:string ;
       rdfs:label "gas reading drilling background gas"^^xsd:string ;
       rdfs:subClassOf ep-activity:GasReading ;
-      owl:disjointWith ep-activity:GasReading-other , ep-activity:GasReading-circulating_background_gas , ep-activity:GasReading-trip_gas , ep-activity:GasReading-connection_gas , ep-activity:GasReading-drilling_gas_peak , ep-activity:GasReading-shut_down_gas , ep-activity:GasReading-flow_check_gas , ep-activity:GasReading-no_readings .
+      owl:disjointWith ep-activity:GasReading-circulating_background_gas , ep-activity:GasReading-connection_gas , ep-activity:GasReading-drilling_gas_peak , ep-activity:GasReading-flow_check_gas , ep-activity:GasReading-no_readings , ep-activity:GasReading-other , ep-activity:GasReading-shut_down_gas , ep-activity:GasReading-trip_gas .
 ep-activity:GasReading-drilling_gas_peak
       rdf:type ep-activity:GasReadingType , owl:Class ;
+      rdfs:comment "gas reading that is of the drilling gas peak"^^xsd:string ;
       rdfs:label "gas reading drilling gas peak"^^xsd:string ;
       rdfs:subClassOf ep-activity:GasReading ;
-      owl:disjointWith ep-activity:GasReading-other , ep-activity:GasReading-circulating_background_gas , ep-activity:GasReading-connection_gas , ep-activity:GasReading-drilling_background_gas , ep-activity:GasReading-no_readings , ep-activity:GasReading-trip_gas , ep-activity:GasReading-flow_check_gas , ep-activity:GasReading-shut_down_gas .
+      owl:disjointWith ep-activity:GasReading-circulating_background_gas , ep-activity:GasReading-connection_gas , ep-activity:GasReading-drilling_background_gas , ep-activity:GasReading-flow_check_gas , ep-activity:GasReading-no_readings , ep-activity:GasReading-other , ep-activity:GasReading-shut_down_gas , ep-activity:GasReading-trip_gas .
 ep-activity:GasReading-flow_check_gas
-      rdf:type owl:Class , ep-activity:GasReadingType ;
+      rdf:type ep-activity:GasReadingType , owl:Class ;
+      rdfs:comment "gas reading that is of the flow check gas"^^xsd:string ;
       rdfs:label "gas reading flow check gas"^^xsd:string ;
       rdfs:subClassOf ep-activity:GasReading ;
-      owl:disjointWith ep-activity:GasReading-no_readings , ep-activity:GasReading-drilling_background_gas , ep-activity:GasReading-trip_gas , ep-activity:GasReading-shut_down_gas , ep-activity:GasReading-connection_gas , ep-activity:GasReading-drilling_gas_peak , ep-activity:GasReading-other , ep-activity:GasReading-circulating_background_gas .
+      owl:disjointWith ep-activity:GasReading-circulating_background_gas , ep-activity:GasReading-connection_gas , ep-activity:GasReading-drilling_background_gas , ep-activity:GasReading-drilling_gas_peak , ep-activity:GasReading-no_readings , ep-activity:GasReading-other , ep-activity:GasReading-shut_down_gas , ep-activity:GasReading-trip_gas .
 ep-activity:GasReading-no_readings
       rdf:type ep-activity:GasReadingType , owl:Class ;
+      rdfs:comment "gas reading that fails to obtain any data"^^xsd:string ;
       rdfs:label "gas reading no readings"^^xsd:string ;
       rdfs:subClassOf ep-activity:GasReading ;
-      owl:disjointWith ep-activity:GasReading-shut_down_gas , ep-activity:GasReading-drilling_background_gas , ep-activity:GasReading-other , ep-activity:GasReading-flow_check_gas , ep-activity:GasReading-trip_gas , ep-activity:GasReading-circulating_background_gas , ep-activity:GasReading-connection_gas , ep-activity:GasReading-drilling_gas_peak .
+      owl:disjointWith ep-activity:GasReading-circulating_background_gas , ep-activity:GasReading-connection_gas , ep-activity:GasReading-drilling_background_gas , ep-activity:GasReading-drilling_gas_peak , ep-activity:GasReading-flow_check_gas , ep-activity:GasReading-other , ep-activity:GasReading-shut_down_gas , ep-activity:GasReading-trip_gas .
 ep-activity:GasReading-other
       rdf:type ep-activity:GasReadingType , owl:Class ;
+      rdfs:comment "gas reading that is of a type not enumerated within the DDR XML schema"^^xsd:string ;
       rdfs:label "gas reading other"^^xsd:string ;
       rdfs:subClassOf ep-activity:GasReading ;
-      owl:disjointWith ep-activity:GasReading-connection_gas , ep-activity:GasReading-no_readings , ep-activity:GasReading-drilling_background_gas , ep-activity:GasReading-drilling_gas_peak , ep-activity:GasReading-flow_check_gas , ep-activity:GasReading-circulating_background_gas , ep-activity:GasReading-trip_gas , ep-activity:GasReading-shut_down_gas .
+      owl:disjointWith ep-activity:GasReading-circulating_background_gas , ep-activity:GasReading-connection_gas , ep-activity:GasReading-drilling_background_gas , ep-activity:GasReading-drilling_gas_peak , ep-activity:GasReading-flow_check_gas , ep-activity:GasReading-no_readings , ep-activity:GasReading-shut_down_gas , ep-activity:GasReading-trip_gas .
 ep-activity:GasReading-shut_down_gas
       rdf:type ep-activity:GasReadingType , owl:Class ;
+      rdfs:comment "gas reading that is of shut down gas"^^xsd:string ;
       rdfs:label "gas reading shut down gas"^^xsd:string ;
       rdfs:subClassOf ep-activity:GasReading ;
-      owl:disjointWith ep-activity:GasReading-drilling_gas_peak , ep-activity:GasReading-trip_gas , ep-activity:GasReading-circulating_background_gas , ep-activity:GasReading-drilling_background_gas , ep-activity:GasReading-flow_check_gas , ep-activity:GasReading-no_readings , ep-activity:GasReading-other , ep-activity:GasReading-connection_gas .
+      owl:disjointWith ep-activity:GasReading-circulating_background_gas , ep-activity:GasReading-connection_gas , ep-activity:GasReading-drilling_background_gas , ep-activity:GasReading-drilling_gas_peak , ep-activity:GasReading-flow_check_gas , ep-activity:GasReading-no_readings , ep-activity:GasReading-other , ep-activity:GasReading-trip_gas .
 ep-activity:GasReading-trip_gas
-      rdf:type owl:Class , ep-activity:GasReadingType ;
+      rdf:type ep-activity:GasReadingType , owl:Class ;
+      rdfs:comment "gas reading that is of trip gas"^^xsd:string ;
       rdfs:label "gas reading trip gas"^^xsd:string ;
       rdfs:subClassOf ep-activity:GasReading ;
-      owl:disjointWith ep-activity:GasReading-other , ep-activity:GasReading-drilling_gas_peak , ep-activity:GasReading-connection_gas , ep-activity:GasReading-shut_down_gas , ep-activity:GasReading-circulating_background_gas , ep-activity:GasReading-drilling_background_gas , ep-activity:GasReading-no_readings , ep-activity:GasReading-flow_check_gas .
+      owl:disjointWith ep-activity:GasReading-circulating_background_gas , ep-activity:GasReading-connection_gas , ep-activity:GasReading-drilling_background_gas , ep-activity:GasReading-drilling_gas_peak , ep-activity:GasReading-flow_check_gas , ep-activity:GasReading-no_readings , ep-activity:GasReading-other , ep-activity:GasReading-shut_down_gas .
 ep-activity:GasReadingType
       rdf:type rdfs:Class ;
+      rdfs:comment "class of gas reading"^^xsd:string ;
       rdfs:label "gas reading type"^^xsd:string ;
       rdfs:subClassOf owl:Class .
@@ -348,11 +385,13 @@ ep-activity:LeakOffTest
 ep-activity:LithologyAndShowsObservation
       rdf:type owl:Class ;
+      rdfs:comment "activity that is intended to observe lithology and shows"^^xsd:string ;
       rdfs:label "lithology and shows observation"^^xsd:string ;
       rdfs:subClassOf ep-activity:Activity .
 ep-activity:MonthlyDrillingActivity
       rdf:type owl:Class ;
+      rdfs:comment "drilling activity that consists of all that is done in order to drill a well during one month"^^xsd:string ;
       rdfs:label "monthly drilling activity"^^xsd:string ;
       rdfs:subClassOf ep-activity:DrillingActivity ;
       rdfs:subClassOf
@@ -369,22 +408,24 @@ ep-activity:MonthlyProductionActivity
 ep-activity:OffshoreActivity
       rdf:type owl:Class ;
+      rdfs:comment "not used in the DDR"^^xsd:string ;
       rdfs:label "Offshore activity"^^xsd:string ;
       rdfs:subClassOf ep-activity:Activity .
 ep-activity:OffshoreWellActivity
       rdf:type owl:Class ;
+      rdfs:comment "not used in the DDR"^^xsd:string ;
       rdfs:label "Offshore well activity"^^xsd:string ;
       rdfs:subClassOf ep-activity:OffshoreActivity ;
       rdfs:subClassOf
               [ rdf:type owl:Restriction ;
                 owl:cardinality "1"^^xsd:nonNegativeInteger ;
-                owl:onProperty ep-activity:onWell
+                owl:onProperty ep-activity:onRig
               ] ;
       rdfs:subClassOf
               [ rdf:type owl:Restriction ;
                 owl:cardinality "1"^^xsd:nonNegativeInteger ;
-                owl:onProperty ep-activity:onRig
+                owl:onProperty ep-activity:onWell
               ] ;
       rdfs:subClassOf
               [ rdf:type owl:Restriction ;
@@ -394,38 +435,45 @@ ep-activity:OffshoreWellActivity
 ep-activity:OpenPerforationInterval
       rdf:type owl:Class ;
+      rdfs:comment "activity that is intended to open a perforation interval"^^xsd:string ;
       rdfs:label "open perforation interval"^^xsd:string ;
       rdfs:subClassOf ep-activity:Activity .
 ep-activity:PorePressureDetermination
       rdf:type owl:Class ;
+      rdfs:comment "activity that is intended to determine pore pressure"^^xsd:string ;
       rdfs:label "pore pressure determination"^^xsd:string ;
       rdfs:subClassOf ep-activity:Activity .
 ep-activity:PorePressureDeterminationType
       rdf:type rdfs:Class ;
+      rdfs:comment "class of pore pressure determination on the basis of whether it is an estimation or a measurement"^^xsd:string ;
       rdfs:label "pore pressure determination type"^^xsd:string ;
       rdfs:subClassOf owl:Class .
 ep-activity:PorePressureEstimation
       rdf:type ep-activity:PorePressureDeterminationType , owl:Class ;
+      rdfs:comment "pore pressure determination that is an estimation"^^xsd:string ;
       rdfs:label "pore pressure estimation"^^xsd:string ;
       rdfs:subClassOf ep-activity:PorePressureDetermination ;
       owl:disjointWith ep-activity:PorePressureMeasurement .
 ep-activity:PorePressureMeasurement
       rdf:type ep-activity:PorePressureDeterminationType , owl:Class ;
+      rdfs:comment "pore pressure determination that is a measurement"^^xsd:string ;
       rdfs:label "pore pressure measurement"^^xsd:string ;
       rdfs:subClassOf ep-activity:PorePressureDetermination ;
       owl:disjointWith ep-activity:PorePressureEstimation .
 ep-activity:PreliminaryZonation
       rdf:type owl:Class ;
+      rdfs:comment "activity that is intended to establish a preliminary zonation"^^xsd:string ;
       rdfs:label "preliminary zonation"^^xsd:string ;
       rdfs:subClassOf ep-activity:Activity .
 ep-activity:PressureTestType
       rdf:type rdfs:Class ;
+      rdfs:comment "class of pressure test on the basis of what is tested"^^xsd:string ;
       rdfs:label "pressure test type"^^xsd:string ;
       rdfs:subClassOf owl:Class .
@@ -443,6 +491,7 @@ ep-activity:ProductionActivityToDate
 ep-activity:ProductionTest
       rdf:type ep-activity:WellTestType , owl:Class ;
+      rdfs:comment "well test that is intended to determine the daily rate of oil, gas, and water production from a (potential) reservoir"^^xsd:string ;
       rdfs:label "production test"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellTest ;
       dc:description "A test to determine the daily rate of oil, gas, and water production from a (potential) reservoir."^^xsd:string ;
@@ -450,12 +499,14 @@ ep-activity:ProductionTest
 ep-activity:SuccessfulActivity
       rdf:type ep-activity:ActivitySuccessType , owl:Class ;
+      rdfs:comment "activity that succeeds"^^xsd:string ;
       rdfs:label "successful activity"^^xsd:string ;
       rdfs:subClassOf ep-activity:Activity ;
       owl:disjointWith ep-activity:FailedActivity .
 ep-activity:WeeklyDrillingActivity
       rdf:type owl:Class ;
+      rdfs:comment "drilling activity that consists of all that is done in order to drill a well during one week"^^xsd:string ;
       rdfs:label "weekly drilling activity"^^xsd:string ;
       rdfs:subClassOf ep-activity:DrillingActivity ;
       rdfs:subClassOf
@@ -490,21 +541,25 @@ ep-activity:WellBoreBitRunDrilling-withinReportingPeriod
 ep-activity:WellBoreDirectionalSurvey
       rdf:type owl:Class ;
+      rdfs:comment "activity that is a wellbore directional survey"^^xsd:string ;
       rdfs:label "well bore directional survey"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellOperation .
 ep-activity:WellBoreDrillingType
       rdf:type rdfs:Class ;
+      rdfs:comment "class of wellbore drilling on the basis of the role of the wellbore"^^xsd:string ;
       rdfs:label "well bore drilling type"^^xsd:string ;
       rdfs:subClassOf owl:Class .
 ep-activity:WellBoreLogRun
       rdf:type owl:Class ;
+      rdfs:comment "activity that is a welbore log run"^^xsd:string ;
       rdfs:label "well bore logging"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellOperation .
 ep-activity:WellBorePressureTest
       rdf:type owl:Class ;
+      rdfs:comment "activity that is a wellbore pressure test"^^xsd:string ;
       rdfs:label "well bore pressure test"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellOperation .
@@ -516,160 +571,189 @@ ep-activity:WellBoreReportingPeriodDrilling
 ep-activity:WellCementJob
       rdf:type owl:Class ;
+      rdfs:comment "activity that is a well cement job"^^xsd:string ;
       rdfs:label "well cement job"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellOperation .
 ep-activity:WellCementJob-other
       rdf:type ep-activity:WellCementJobPurposeType , owl:Class ;
+      rdfs:comment "well cement job that is of a type not enumerated within the DDR XML schema"^^xsd:string ;
       rdfs:label "well cement job other"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellCementJob ;
       owl:disjointWith ep-activity:WellCementJob-plug , ep-activity:WellCementJob-primary , ep-activity:WellCementJob-squeeze .
 ep-activity:WellCementJob-plug
       rdf:type ep-activity:WellCementJobPurposeType , owl:Class ;
+      rdfs:comment "well cement job that is intended to plug"^^xsd:string ;
       rdfs:label "well cement job plug"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellCementJob .
 ep-activity:WellCementJob-primary
       rdf:type ep-activity:WellCementJobPurposeType , owl:Class ;
+      rdfs:comment "well cement job that is primary"^^xsd:string ;
       rdfs:label "well cement job primary"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellCementJob .
 ep-activity:WellCementJob-squeeze
       rdf:type ep-activity:WellCementJobPurposeType , owl:Class ;
+      rdfs:comment "well cement job that is intended to squeeze"^^xsd:string ;
       rdfs:label "well cement job squeeze"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellCementJob .
 ep-activity:WellCementJobBottomPlugType
       rdf:type rdfs:Class ;
+      rdfs:comment "class of well cement job on the basis of whether or not it has a bottom plug"^^xsd:string ;
       rdfs:label "well cement job bottom plug type"^^xsd:string ;
       rdfs:subClassOf owl:Class .
 ep-activity:WellCementJobCasingReciprocationType
       rdf:type rdfs:Class ;
+      rdfs:comment "class of well cement job on the basis of whether or not it has casing reciprocation"^^xsd:string ;
       rdfs:label "well cement job casing reciprocation type"^^xsd:string ;
       rdfs:subClassOf owl:Class .
 ep-activity:WellCementJobCasingRotationType
       rdf:type rdfs:Class ;
+      rdfs:comment "class of well cement job on the basis of whether or not it has casing rotation"^^xsd:string ;
       rdfs:label "well cement job casing rotation type"^^xsd:string ;
       rdfs:subClassOf owl:Class .
 ep-activity:WellCementJobFloatHoldingType
       rdf:type rdfs:Class ;
+      rdfs:comment "class of well cement job on the basis of whether or not it has float holding"^^xsd:string ;
       rdfs:label "well cement job float holding type"^^xsd:string ;
       rdfs:subClassOf owl:Class .
 ep-activity:WellCementJobPlugBumpingType
       rdf:type rdfs:Class ;
+      rdfs:comment "class of well cement job on the basis of whether or not it has plug bumping"^^xsd:string ;
       rdfs:label "well cement job plug bumping type"^^xsd:string ;
       rdfs:subClassOf owl:Class .
 ep-activity:WellCementJobPressureRelease
       rdf:type owl:Class ;
+      rdfs:comment "activity that is a release of pressure within a well cement job"^^xsd:string ;
       rdfs:label "well cement job pressure release"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellOperation .
 ep-activity:WellCementJobPurposeType
       rdf:type rdfs:Class ;
+      rdfs:comment "class of well cement job on the basis of the purpose of the job"^^xsd:string ;
       rdfs:label "well cement job purpose type"^^xsd:string ;
       rdfs:subClassOf owl:Class .
 ep-activity:WellCementJobTopPlugType
       rdf:type rdfs:Class ;
+      rdfs:comment "class of well cement job on the basis of whether or not it has a top plug"^^xsd:string ;
       rdfs:label "well cement job top plug type"^^xsd:string ;
       rdfs:subClassOf owl:Class .
 ep-activity:WellCementJobWithBottomPlug
       rdf:type ep-activity:WellCementJobBottomPlugType , owl:Class ;
+      rdfs:comment "well cement job that has a bottom plug"^^xsd:string ;
       rdfs:label "well cement job with bottom plug"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellCementJob ;
       owl:disjointWith ep-activity:WellCementJobWithoutBottomPlug .
 ep-activity:WellCementJobWithCasingReciprocation
       rdf:type ep-activity:WellCementJobCasingReciprocationType , owl:Class ;
+      rdfs:comment "well cement job that has casing reciprocation"^^xsd:string ;
       rdfs:label "well cement job with casing reciprocation"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellCementJob ;
       owl:disjointWith ep-activity:WellCementJobWithoutCasingReciprocation .
 ep-activity:WellCementJobWithCasingRotation
       rdf:type ep-activity:WellCementJobCasingRotationType , owl:Class ;
+      rdfs:comment "well cement job that has casing rotation"^^xsd:string ;
       rdfs:label "well cement job with casing rotation"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellCementJob ;
       owl:disjointWith ep-activity:WellCementJobWithoutTopPlug .
 ep-activity:WellCementJobWithFloatHolding
       rdf:type ep-activity:WellCementJobFloatHoldingType , owl:Class ;
+      rdfs:comment "well cement job that has float holding"^^xsd:string ;
       rdfs:label "well cement job with float holding"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellCementJob ;
       owl:disjointWith ep-activity:WellCementJobWithoutFloatHolding .
 ep-activity:WellCementJobWithPlugBumping
       rdf:type ep-activity:WellCementJobPlugBumpingType , owl:Class ;
+      rdfs:comment "well cement job that has plug bumping"^^xsd:string ;
       rdfs:label "well cement job with plug bumping"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellCementJob ;
       owl:disjointWith ep-activity:WellCementJobWithoutBottomPlug .
 ep-activity:WellCementJobWithTopPlug
       rdf:type ep-activity:WellCementJobTopPlugType , owl:Class ;
+      rdfs:comment "well cement job that has a top plug"^^xsd:string ;
       rdfs:label "well cement job with top plug"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellCementJob ;
       owl:disjointWith ep-activity:WellCementJobWithoutTopPlug .
 ep-activity:WellCementJobWithoutBottomPlug
       rdf:type ep-activity:WellCementJobBottomPlugType , owl:Class ;
+      rdfs:comment "well cement job that does not have a bottom plug"^^xsd:string ;
       rdfs:label "well cement job without bottom plug"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellCementJob ;
       owl:disjointWith ep-activity:WellCementJobWithBottomPlug .
 ep-activity:WellCementJobWithoutCasingReciprocation
       rdf:type ep-activity:WellCementJobCasingReciprocationType , owl:Class ;
+      rdfs:comment "well cement job that does not have casing reciprocation"^^xsd:string ;
       rdfs:label "well cement job without casing reciprocation"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellCementJob ;
       owl:disjointWith ep-activity:WellCementJobWithCasingRotation .
 ep-activity:WellCementJobWithoutCasingRotation
       rdf:type ep-activity:WellCementJobCasingRotationType , owl:Class ;
+      rdfs:comment "well cement job that does not have casing rotation"^^xsd:string ;
       rdfs:label "well cement job without casing rotation"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellCementJob ;
       owl:disjointWith ep-activity:WellCementJobWithCasingRotation .
 ep-activity:WellCementJobWithoutFloatHolding
       rdf:type ep-activity:WellCementJobFloatHoldingType , owl:Class ;
+      rdfs:comment "well cement job that does not have float holding"^^xsd:string ;
       rdfs:label "well cement job without float holding"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellCementJob ;
       owl:disjointWith ep-activity:WellCementJobWithFloatHolding .
 ep-activity:WellCementJobWithoutPlugBumping
       rdf:type ep-activity:WellCementJobPlugBumpingType , owl:Class ;
+      rdfs:comment "well cement job that does not have plug bumping"^^xsd:string ;
       rdfs:label "well cement job without plug bumping"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellCementJob ;
       owl:disjointWith ep-activity:WellCementJobWithBottomPlug .
 ep-activity:WellCementJobWithoutTopPlug
       rdf:type ep-activity:WellCementJobTopPlugType , owl:Class ;
+      rdfs:comment "well cement job that does not have a top plug"^^xsd:string ;
       rdfs:label "well cement job without top plug"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellCementJob ;
       owl:disjointWith ep-activity:WellCementJobWithTopPlug .
 ep-activity:WellCementPumping
       rdf:type owl:Class ;
+      rdfs:comment "activity that is the pumping of well cement"^^xsd:string ;
       rdfs:label "well cement pumping"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellOperation .
 ep-activity:WellCementPumpingFluidReturnType
       rdf:type rdfs:Class ;
+      rdfs:comment "class of well cement pumping on the basis of whether or not it has fluid return"^^xsd:string ;
       rdfs:label "well cement pumping fluid return type"^^xsd:string ;
       rdfs:subClassOf owl:Class .
 ep-activity:WellCementPumpingWithFluidReturn
       rdf:type ep-activity:WellCementPumpingFluidReturnType , owl:Class ;
+      rdfs:comment "well cement pumping that has fluid return"^^xsd:string ;
       rdfs:label "well cement pumping with fluid return"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellCementPumping ;
       owl:disjointWith ep-activity:WellCementPumpingWithoutFluidReturn .
 ep-activity:WellCementPumpingWithoutFluidReturn
       rdf:type ep-activity:WellCementPumpingFluidReturnType , owl:Class ;
+      rdfs:comment "well cement pumping that does not have fluid return"^^xsd:string ;
       rdfs:label "well cement pumping without fluid return"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellCementPumping ;
       owl:disjointWith ep-activity:WellCementPumpingWithFluidReturn .
@@ -682,81 +766,95 @@ ep-activity:WellCompletion
 ep-activity:WellControlIncident
       rdf:type owl:Class ;
+      rdfs:comment "activity that is a well control incident"^^xsd:string ;
       rdfs:label "well control incident"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellOperation .
 ep-activity:WellControlIncident-gas_kick
       rdf:type ep-activity:WellControlIncidentType , owl:Class ;
+      rdfs:comment "well control incident that is a gas kick"^^xsd:string ;
       rdfs:label "well control incident gas kick"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellControlIncident ;
       owl:disjointWith ep-activity:WellControlIncident-oil_kick , ep-activity:WellControlIncident-shallow_gas_kick , ep-activity:WellControlIncident-water_kick .
 ep-activity:WellControlIncident-oil_kick
       rdf:type ep-activity:WellControlIncidentType , owl:Class ;
+      rdfs:comment "well control incident that is an oil kick"^^xsd:string ;
       rdfs:label "well control incident oil kick"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellControlIncident ;
       owl:disjointWith ep-activity:WellControlIncident-gas_kick , ep-activity:WellControlIncident-shallow_gas_kick , ep-activity:WellControlIncident-water_kick .
 ep-activity:WellControlIncident-shallow_gas_kick
       rdf:type ep-activity:WellControlIncidentType , owl:Class ;
+      rdfs:comment "well control incident that is a shallow gas kick"^^xsd:string ;
       rdfs:label "well control incident shallow gas kick"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellControlIncident ;
       owl:disjointWith ep-activity:WellControlIncident-gas_kick , ep-activity:WellControlIncident-oil_kick , ep-activity:WellControlIncident-water_kick .
 ep-activity:WellControlIncident-water_kick
       rdf:type ep-activity:WellControlIncidentType , owl:Class ;
+      rdfs:comment "well control incident that is a water kick"^^xsd:string ;
       rdfs:label "well control incident water kick"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellControlIncident ;
       owl:disjointWith ep-activity:WellControlIncident-gas_kick , ep-activity:WellControlIncident-oil_kick , ep-activity:WellControlIncident-shallow_gas_kick .
 ep-activity:WellControlIncidentType
       rdf:type rdfs:Class ;
+      rdfs:comment "class of well control incident on the basis of the cause of the incident"^^xsd:string ;
       rdfs:label "well control incident type"^^xsd:string ;
       rdfs:subClassOf owl:Class .
 ep-activity:WellKilling
       rdf:type owl:Class ;
+      rdfs:comment "activity that is intended to kill a well"^^xsd:string ;
       rdfs:label "well killing"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellOperation .
 ep-activity:WellKilling-bullheading
       rdf:type ep-activity:WellKillingType , owl:Class ;
+      rdfs:comment "well killing that is by bull heading"^^xsd:string ;
       rdfs:label "well killing bullheading"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellKilling ;
       owl:disjointWith ep-activity:WellKilling-drillers_method , ep-activity:WellKilling-forward_circulation , ep-activity:WellKilling-lubricate_and_bleed , ep-activity:WellKilling-reverse_circulation , ep-activity:WellKilling-wait_and_weight .
 ep-activity:WellKilling-drillers_method
       rdf:type ep-activity:WellKillingType , owl:Class ;
+      rdfs:comment "well killing that is by the drillers method"^^xsd:string ;
       rdfs:label "well killing drillers method"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellKilling ;
       owl:disjointWith ep-activity:WellKilling-bullheading , ep-activity:WellKilling-forward_circulation , ep-activity:WellKilling-lubricate_and_bleed , ep-activity:WellKilling-reverse_circulation , ep-activity:WellKilling-wait_and_weight .
 ep-activity:WellKilling-forward_circulation
       rdf:type ep-activity:WellKillingType , owl:Class ;
+      rdfs:comment "well killing that is by forward circulation"^^xsd:string ;
       rdfs:label "well killing forward circulation"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellKilling ;
       owl:disjointWith ep-activity:WellKilling-bullheading , ep-activity:WellKilling-drillers_method , ep-activity:WellKilling-lubricate_and_bleed , ep-activity:WellKilling-reverse_circulation , ep-activity:WellKilling-wait_and_weight .
 ep-activity:WellKilling-lubricate_and_bleed
       rdf:type ep-activity:WellKillingType , owl:Class ;
+      rdfs:comment "well killing that is by lubricate and bleed"^^xsd:string ;
       rdfs:label "well killing lubricate and bleed"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellKilling ;
       owl:disjointWith ep-activity:WellKilling-bullheading , ep-activity:WellKilling-drillers_method , ep-activity:WellKilling-forward_circulation , ep-activity:WellKilling-reverse_circulation , ep-activity:WellKilling-wait_and_weight .
 ep-activity:WellKilling-reverse_circulation
       rdf:type ep-activity:WellKillingType , owl:Class ;
+      rdfs:comment "well killing that is by reverse circulation"^^xsd:string ;
       rdfs:label "well killing reverse circulation"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellKilling ;
       owl:disjointWith ep-activity:WellKilling-bullheading , ep-activity:WellKilling-drillers_method , ep-activity:WellKilling-forward_circulation , ep-activity:WellKilling-lubricate_and_bleed , ep-activity:WellKilling-wait_and_weight .
 ep-activity:WellKilling-wait_and_weight
       rdf:type ep-activity:WellKillingType , owl:Class ;
+      rdfs:comment "well killing that is by wait and weight"^^xsd:string ;
       rdfs:label "well killing wait and weight"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellKilling ;
       owl:disjointWith ep-activity:WellKilling-bullheading , ep-activity:WellKilling-drillers_method , ep-activity:WellKilling-forward_circulation , ep-activity:WellKilling-lubricate_and_bleed , ep-activity:WellKilling-reverse_circulation .
 ep-activity:WellKillingType
       rdf:type rdfs:Class ;
+      rdfs:comment "class of well killing on the basis of the method of killing"^^xsd:string ;
       rdfs:label "well killing type"^^xsd:string ;
       rdfs:subClassOf owl:Class .
@@ -768,6 +866,7 @@ ep-activity:WellOperation
 ep-activity:WellStimulation
       rdf:type owl:Class ;
+      rdfs:comment "activity that is intended to stimulate a well"^^xsd:string ;
       rdfs:label "well stimulation"^^xsd:string ;
       rdfs:subClassOf ep-activity:WellOperation .
@@ -778,33 +877,39 @@ ep-activity:WellTest
 ep-activity:WellTestType
       rdf:type rdfs:Class ;
+      rdfs:comment "class of well test on the basis of what information is sought by the test"^^xsd:string ;
       rdfs:label "well test type"^^xsd:string ;
       rdfs:subClassOf owl:Class .
 ep-activity:WirelineFormationTest
       rdf:type owl:Class ;
+      rdfs:comment "activity that test surrounding rock formation by inserting a probe into a well on the end of a wire"^^xsd:string ;
       rdfs:label "wireline formation test"^^xsd:string ;
       rdfs:subClassOf ep-activity:Activity .
 ep-activity:WirelineFormationTestType
       rdf:type rdfs:Class ;
+      rdfs:comment "class of wireline formation test on the basis of whether or not it has a good seal"^^xsd:string ;
       rdfs:label "wireline formation test type"^^xsd:string ;
       rdfs:subClassOf owl:Class .
 ep-activity:WirelineFormationTestWithGoodSeal
       rdf:type ep-activity:WirelineFormationTestType , owl:Class ;
+      rdfs:comment "wireline formation test that has a good seal"^^xsd:string ;
       rdfs:label "wireline formation test with a good seal"^^xsd:string ;
       rdfs:subClassOf ep-activity:WirelineFormationTest ;
       owl:disjointWith ep-activity:WirelineFormationTestWithoutGoodSeal .
 ep-activity:WirelineFormationTestWithoutGoodSeal
       rdf:type ep-activity:WirelineFormationTestType , owl:Class ;
+      rdfs:comment "wireline formation test that does not have a good seal"^^xsd:string ;
       rdfs:label "wireline formation test without a good seal"^^xsd:string ;
       rdfs:subClassOf ep-activity:WirelineFormationTest ;
       owl:disjointWith ep-activity:WirelineFormationTestWithGoodSeal .
 ep-activity:averageRateOfDrilling
       rdf:type ep-core:Class_of_indirect_property , owl:FunctionalProperty , owl:ObjectProperty ;
+      rdfs:comment "class_of_indirect_property that is the average rate of drilling for a drilling activity"^^xsd:string ;
       rdfs:domain ep-activity:DrillingActivity ;
       rdfs:label "average rate of drilling"^^xsd:string ;
       rdfs:range ep-core:Speed .
@@ -817,40 +922,46 @@ ep-activity:descriptionOfActivitiesFollowingTheDailyReportingPeriod
 ep-activity:descriptionOfActivitiesForecastForTheNextDailyReportingPeriod
       rdf:type owl:DatatypeProperty ;
+      rdfs:comment "description of the drilling activities that are forecast for the next daily reporting period"^^xsd:string ;
       rdfs:domain ep-activity:DailyDrillingActivity ;
       rdfs:label "description of activities forecast for the next daily reporting period"^^xsd:string .
 ep-activity:descriptionOfActivitiesWithinTheDailyReportingPeriod
       rdf:type owl:DatatypeProperty ;
+      rdfs:comment "description of the drilling activity that take place within a daily reporting period"^^xsd:string ;
       rdfs:domain ep-activity:DailyDrillingActivity ;
       rdfs:label "description of activities within the daily reporting period"^^xsd:string .
 ep-activity:distanceDrilled
       rdf:type ep-core:Class_of_indirect_property , owl:FunctionalProperty , owl:ObjectProperty ;
+      rdfs:comment "class_of_indirect_property that is the distance drilled by a drilling activity"^^xsd:string ;
       rdfs:domain ep-activity:DrillingActivity ;
       rdfs:label "final rate of drilling"^^xsd:string ;
       rdfs:range ep-core:Length .
 ep-activity:drillingContractor
       rdf:type owl:FunctionalProperty , owl:ObjectProperty ;
+      rdfs:comment "organization that is contracted to perform a drilling activity"^^xsd:string ;
       rdfs:domain ep-activity:DrillingActivity ;
       rdfs:label "drilling contractor"^^xsd:string ;
       rdfs:range <http://www.reportinghub.no/ep/schema/organization#Organization> .
 ep-activity:drillingOperator
       rdf:type owl:FunctionalProperty , owl:ObjectProperty ;
+      rdfs:comment "Corresponds to Drilling Operator field in WellBore tables"^^xsd:string , "organization that operates the facility that performs a drilling activity"^^xsd:string ;
       rdfs:domain ep-activity:DrillingActivity ;
       rdfs:label "drilling operator"^^xsd:string ;
       rdfs:range <http://www.reportinghub.no/ep/schema/organization#Organization> .
 ep-activity:durationOfDrilling
       rdf:type ep-core:Class_of_indirect_property , owl:FunctionalProperty , owl:ObjectProperty ;
+      rdfs:comment "not used in the DDR"^^xsd:string ;
       rdfs:domain ep-activity:DrillingActivity ;
       rdfs:label "duration of drilling"^^xsd:string ;
       rdfs:range ep-core:TimeDuration .
 ep-activity:existsThroughout
-      rdf:type owl:FunctionalProperty , owl:DatatypeProperty ;
+      rdf:type owl:DatatypeProperty , owl:FunctionalProperty ;
       rdfs:domain ep-core:PhysicalThing ;
       rdfs:label "exists throughout"^^xsd:string .
@@ -861,35 +972,41 @@ ep-activity:existsWithin
 ep-activity:failedEquipment
       rdf:type owl:ObjectProperty ;
+      rdfs:comment "equipment that fails and is repaired during an equipment failure and repair activity"^^xsd:string ;
       rdfs:domain ep-activity:EquipmentFailureAndRepair ;
       rdfs:label "failed equipment"^^xsd:string ;
       rdfs:range <http://www.reportinghub.no/ep/schema/equipment#Equipment> .
 ep-activity:finalRateOfDrilling
       rdf:type ep-core:Class_of_indirect_property , owl:FunctionalProperty , owl:ObjectProperty ;
+      rdfs:comment "class_of_indirect_property that is the rate of drilling at the end of a drilling activity"^^xsd:string ;
       rdfs:domain ep-activity:DrillingActivity ;
       rdfs:label "final rate of drilling"^^xsd:string ;
       rdfs:range ep-core:Speed .
 ep-activity:finishedAt
       rdf:type owl:DatatypeProperty , owl:FunctionalProperty ;
+      rdfs:comment "UTC representation of the finishing time for an activity"^^xsd:string ;
       rdfs:domain ep-core:PhysicalThing ;
       rdfs:label "finished at"^^xsd:string ;
       rdfs:range xsd:dateTime .
 ep-activity:fluidProducedByWellTest
       rdf:type owl:FunctionalProperty , owl:ObjectProperty ;
+      rdfs:comment "quantity of material that is produced by a well test"^^xsd:string ;
       rdfs:domain ep-activity:WellTest ;
       rdfs:label "fluid produced by well test"^^xsd:string ;
       rdfs:range <http://www.reportinghub.no/ep/schema/material#Fluid> .
 ep-activity:hasCasingLinerTubing
       rdf:type owl:FunctionalProperty , owl:ObjectProperty ;
+      rdfs:comment "not used in the DDR"^^xsd:string ;
       rdfs:domain ep-activity:WellStimulation ;
       rdfs:label "has Casing/Liner/Tubing"^^xsd:string .
 ep-activity:hasCasingString
       rdf:type owl:ObjectProperty ;
+      rdfs:comment "not used in the DDR"^^xsd:string ;
       rdfs:label "has casing string"^^xsd:string .
 ep-activity:hasChokeValve
@@ -917,32 +1034,38 @@ ep-activity:hasInflowLocation
 ep-activity:hasSubActivity
       rdf:type owl:ObjectProperty ;
+      rdfs:comment "not used in the DDR"^^xsd:string ;
       rdfs:label "has sub activity"^^xsd:string .
 ep-activity:hasWellTestChoke
       rdf:type owl:FunctionalProperty , owl:ObjectProperty ;
+      rdfs:comment "not used in the DDR"^^xsd:string ;
       rdfs:domain ep-activity:WellTest ;
       rdfs:label "has well test choke"^^xsd:string ;
       rdfs:range <http://www.reportinghub.no/ep/schema/equipment#WellTestChoke> .
 ep-activity:identificationNumberOfCore
       rdf:type owl:DatatypeProperty , owl:FunctionalProperty ;
+      rdfs:comment "identification number of the core extracted by an extract a well core activity"^^xsd:string ;
       rdfs:domain ep-activity:ExtractAWellCore ;
       rdfs:label "identification number of core"^^xsd:string .
 ep-activity:logRunNumber
       rdf:type owl:DatatypeProperty ;
+      rdfs:comment "identification number of a well bore log run activity"^^xsd:string ;
       rdfs:domain ep-activity:WellBoreLogRun ;
       rdfs:label "log run number"^^xsd:string .
 ep-activity:loggedWellBoreInterval
       rdf:type owl:FunctionalProperty , owl:ObjectProperty ;
+      rdfs:comment "wellbore section that is logged by a wellbore log run activity"^^xsd:string ;
       rdfs:domain ep-activity:WellBoreLogRun ;
       rdfs:label "logged wellbore interval"^^xsd:string ;
       rdfs:range ep-core:PhysicalObject .
 ep-activity:measuredDepthOfFluidSampling
       rdf:type owl:FunctionalProperty , owl:ObjectProperty ;
+      rdfs:comment "class_of_indirect_property that is the measured depth with respect to the RKB of the location of fluid sampling by a wireline formation test activity"^^xsd:string ;
       rdfs:domain ep-activity:WirelineFormationTest ;
       rdfs:label "measured depth of fluid sampling"^^xsd:string ;
       rdfs:range ep-core:Length .
@@ -955,6 +1078,7 @@ ep-activity:missedProductionTime
 ep-activity:nominallyAt
       rdf:type owl:DatatypeProperty ;
+      rdfs:comment "UTC representation of the nominal time of an activity"^^xsd:string ;
       rdfs:domain ep-activity:Activity ;
       rdfs:label "nominal time"^^xsd:string ;
       rdfs:range xsd:dateTime .
@@ -989,12 +1113,14 @@ ep-activity:onWellBore
 ep-activity:operatingTimeOfDrillBit
       rdf:type ep-core:Class_of_indirect_property , owl:FunctionalProperty , owl:ObjectProperty ;
+      rdfs:comment "class_of_indirect_property that is the operating time of the drill bit for a drilling activity"^^xsd:string ;
       rdfs:domain ep-activity:DrillingActivity ;
       rdfs:label "operating time of drill bit"^^xsd:string ;
       rdfs:range ep-core:TimeDuration .
 ep-activity:pressureAtWhichPlugBumped
       rdf:type owl:FunctionalProperty , owl:ObjectProperty ;
+      rdfs:comment "class_of_indirect_property that is the pressure at which the plub bumped for a well cement pumping activity"^^xsd:string ;
       rdfs:domain ep-activity:WellCementPumping ;
       rdfs:label "pressure at which plug bumped"^^xsd:string ;
       rdfs:range ep-core:Pressure .
@@ -1005,12 +1131,14 @@ ep-activity:pumpedFluid
 ep-activity:recoveredCore
       rdf:type owl:FunctionalProperty , owl:ObjectProperty ;
+      rdfs:comment "core that is recovered by an ExtractAWellCore activity"^^xsd:string ;
       rdfs:domain ep-activity:ExtractAWellCore ;
       rdfs:label "recovered core"^^xsd:string ;
       rdfs:range <http://www.reportinghub.no/ep/schema/well#RecoveredCore> .
 ep-activity:returnedCementingFluid
       rdf:type owl:FunctionalProperty , owl:ObjectProperty ;
+      rdfs:comment "cementing fluid that is returned during a well cement pumping activity"^^xsd:string ;
       rdfs:domain ep-activity:WellCementPumping ;
       rdfs:label "returned cementing fluid"^^xsd:string ;
       rdfs:range <http://www.reportinghub.no/ep/schema/well#CementingFluid> .