validated
equivalent
sump
IRI:
http://www.inf.ufrgs.br/ontologies/copi#Sump
Generated on 2026-09-10
Natural Language Definition
EN
A sump (drainage collector) is a vessel that bears a gravity collection function: it collects and holds the heavier of two or more fluid phases, accumulated by gravity.
PT-BR
Um sump (coletor de drenagem) e um vaso que possui uma funcao de coleta gravitacional: coleta e retem a fase mais pesada de duas ou mais fases de fluido, acumulada por gravidade.
Formal Axioms
Semi-formal (Aristotelian)
Every sump is a vessel that bears a gravity collection function, and conversely.
First-Order Logic Theory
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▸ Stored override
∀x (Sump(x) ↔ Vessel(x) ∧ ∃f (GravityCollectionFunction(f) ∧ bearerOf(x,f)))
OWL 2 / Turtle
@prefix copi: <https://www.inf.ufrgs.br/ontologies/copi/> .
@prefix : <https://www.inf.ufrgs.br/ontologies/copi/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix bfo: <http://purl.obolibrary.org/obo/> .
@prefix iof-core: <https://spec.industrialontologies.org/ontology/construct/> .
@prefix iof-av: <https://spec.industrialontologies.org/ontology/annotation/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix qudt: <http://qudt.org/schema/qudt/> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix apv: <http://inf.ufrgs.br/ontologies/apv#> .
### COPI — Core Ontology for Petroleum Installations
### Class module: Sump
<https://www.inf.ufrgs.br/ontologies/copi>
rdf:type owl:Ontology ;
dcterms:title "Core Ontology for Petroleum Installations (COPI)"@en ;
dcterms:title "Ontologia Core para Instalações de Petróleo (COPI)"@pt-br ;
dcterms:description "BFO/IOF-Core conformant ontology of equipment classes for petroleum production plants, developed using the five-step RDL enrichment method."@en ;
skos:scopeNote "Material artifacts (bfo:material_entity) that (i) are part of a petroleum production plant, and (ii) bear at least one function whose realization involves the transport (e.g. production and injection), processing (separation and other processes), control, monitoring, measurement, containment or offloading of material or energy."@en ;
skos:scopeNote "Artefatos materiais (bfo:material_entity) que (i) fazem parte de uma planta de produção de petróleo, e (ii) possuem ao menos uma função cuja realização envolve o transporte (p. ex. produção e injeção), processamento (separação e outros processos), controle, monitoramento, medição, contenção ou escoamento de material ou energia."@pt-br ;
skos:scopeNote "COPI provides high-level equipment categories defined by function to demonstrate the defined-class mechanism. Equipment subtypes are annotated with references to CFIHOS and PCA RDL terms. COPI is not a reference data library; organizations should use CFIHOS, PCA RDL, or ISO 14224 for comprehensive equipment classification."@en ;
skos:scopeNote "COPI fornece categorias de alto nível de equipamentos definidas por função para demonstrar o mecanismo de classe definida. Os subtipos de equipamentos são anotados com referências aos termos do CFIHOS e do PCA RDL. COPI não é uma biblioteca de dados de referência; organizações devem utilizar o CFIHOS, o PCA RDL ou a ISO 14224 para classificação abrangente de equipamentos."@pt-br ;
owl:versionInfo "1.1.0" ;
owl:imports <https://spec.industrialontologies.org/ontology/core/Core/> ;
owl:imports <http://purl.obolibrary.org/obo/bfo/2020/bfo.owl> ;
dcterms:creator "Nicolau Oyhenard dos Santos"@en ;
dcterms:contributor "Cauã Antunes" ;
dcterms:contributor "Haroldo Rojas" ;
dcterms:contributor "Rafael Petry" ;
dcterms:contributor "Régis Romeu" ;
dcterms:contributor "Mara Abel" ;
dcterms:isPartOf <https://inf.ufrgs.br/projetos/OntoKG> ;
dcterms:publisher "Universidade Federal do Rio Grande do Sul (UFRGS)"@en ;
dcterms:license <https://creativecommons.org/licenses/by/4.0/> ;
dcterms:created "2026-04-08"^^xsd:date ;
dcterms:modified "2026-10-08"^^xsd:date ;
apv:GlobalMinLanguageCoverage "en pt-br" ;
apv:ClassURIFormationRule "https://www[.]inf[.]ufrgs[.]br/ontologies/copi/(COPI_[0-9]{7}|[A-Z][A-Za-z0-9]*)" ;
apv:ClassMinAnnotationCoverage "rdfs:label https://spec.industrialontologies.org/ontology/annotation/naturalLanguageDefinition" .
iof-av:naturalLanguageDefinition rdf:type owl:AnnotationProperty ;
apv:MinAnnotationLength 20 .
### Identity-giving function
:COPI_0000754 rdf:type owl:Class ; # GravityCollectionFunction
rdfs:subClassOf :COPI_0000025 ; # ContainmentFunction
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:allValuesFrom :COPI_0000755 # GravityCollectionProcess
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty bfo:BFO_0000054 ; # realizedIn
owl:someValuesFrom :COPI_0000755 # GravityCollectionProcess
] ;
rdfs:label "gravity collection function"@en ;
iof-av:naturalLanguageDefinition "A ContainmentFunction subtype that is realized in a GravityCollectionProcess and that consists in collecting and holding the heavier of two or more fluid phases, separated and accumulated by gravity."@en ;
skos:definition "A ContainmentFunction subtype that is realized in a GravityCollectionProcess and that consists in collecting and holding the heavier of two or more fluid phases, separated and accumulated by gravity."@en .
:COPI_0000025 rdf:type owl:Class . # ContainmentFunction
### Process type
:COPI_0000755 rdf:type owl:Class ; # GravityCollectionProcess
rdfs:subClassOf :COPI_0000009 ; # MaterialContainment
rdfs:label "gravity collection process"@en ;
iof-av:naturalLanguageDefinition "A MaterialContainment process in which the heavier phase of a fluid mixture (e.g. drainage liquid from a lighter gas or vapour) settles and accumulates in a low-lying reservoir under gravity, to be held until removed."@en ;
skos:definition "A MaterialContainment process in which the heavier phase of a fluid mixture (e.g. drainage liquid from a lighter gas or vapour) settles and accumulates in a low-lying reservoir under gravity, to be held until removed."@en .
:COPI_0000009 rdf:type owl:Class . # MaterialContainment
:COPI_0000755 # GravityCollectionProcess
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasInput ;
owl:someValuesFrom :COPI_0000037 # PortionOfFluid
] ;
rdfs:subClassOf [
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasSpecifiedOutput ;
owl:someValuesFrom :COPI_0000037 # PortionOfFluid
] .
### Equipment universal: Sump
:COPI_0000785 rdf:type owl:Class ; # Sump
owl:equivalentClass [
rdf:type owl:Class ;
owl:intersectionOf (
:COPI_0000158 # Vessel
[
rdf:type owl:Restriction ;
owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart)
owl:someValuesFrom :COPI_0000754 # GravityCollectionFunction
]
)
] ;
rdfs:label "sump"@en ;
iof-av:naturalLanguageDefinition "A sump (drainage collector) is a vessel that bears a gravity collection function: it collects and holds the heavier of two or more fluid phases, accumulated by gravity."@en ;
skos:definition "A sump (drainage collector) is a vessel that bears a gravity collection function: it collects and holds the heavier of two or more fluid phases, accumulated by gravity."@en ;
iof-av:naturalLanguageDefinition "Um sump (coletor de drenagem) e um vaso que possui uma funcao de coleta gravitacional: coleta e retem a fase mais pesada de duas ou mais fases de fluido, acumulada por gravidade."@pt-br ;
iof-av:semiFormalNaturalLanguageAxiom "Every sump is a vessel that bears a gravity collection function, and conversely."@en ;
iof-av:firstOrderLogicAxiom "∀x (Sump(x) ↔ Vessel(x) ∧ ∃f (GravityCollectionFunction(f) ∧ bearerOf(x,f)))"@en ;
skos:definition "[ISO 15926-4] A <SUMP> is a <RESERVOIR> intended to collect the heavier phase, e.g holding liquid"@en ;
skos:definition "[CFIHOS] Is an artefact intended to collect a heavy phase by making use of gravity."@en ;
skos:definition "[OnePetro] A low area, usually the area below the perfs."@en .
Axiomatization Decision Log
1
Identity-Giving Function
Function class
GravityCollectionFunction
⊑ ContainmentFunction
Realized in
GravityCollectionProcess
⊑ MaterialContainment
Vessel's own function (ContainmentFunction) is too generic to distinguish a sump from any other container; GravityCollectionFunction narrows it to the specific gravity-driven collection purpose stated verbatim in both cross-source definitions -- matching the colleague's 'Drainage Collector' framing closely.
2
Genus Determination
Vessel
Parent candidate RESERVOIR is not itself enriched; Vessel (already enriched, function=ContainmentFunction, exported) is the closest enriched supertype and matches the physical form (a container that holds an accumulated phase).
3
Necessary Parts
No necessary parts recorded (concept may be primitive at this level).
No specific structural component is named in either cross-source definition; the only related terms.db entries found (SUMP MOUNTED CASING, SUMP PUMP, sump packer) describe equipment that mounts in or works with a sump, not components of the sump vessel itself.
4
Process Participation Signature ⟨I, O, T⟩
Inputs (I)
PortionOfFluid
— the heavier of two or more phases, settling under gravity
Outputs (O)
PortionOfFluid
— the same accumulated heavier phase, held until removed
Transformation (T)
the heavier fluid phase settles and accumulates in the reservoir under gravity, held until removed
Passive gravity-driven accumulation signature, matching the genus Vessel; no active mechanical separation mechanism is asserted (distinguishing it from Separator-genus devices, which bear a distinct SeparationFunction).
5
Axiom Mode Decision
Necessary + Sufficient
— modelled as a defined class
(≡, EquivalentClass). Automatic classification is
appropriate for this concept.
Cross-Standard Observations
ISO 15926-4 and CFIHOS definitions are consistent and mutually reinforcing. Chosen as the anchor for the colleague's 'Drainage Collector' term after an earlier candidate (CFIHOS 'drain pot') turned out to be a mismatch -- its own definition types it as a 'liquid outlet PORT', not a collection vessel, so it was rejected in favor of this stronger, cross-source match.
Reviewer Notes
Step 2b consciously not pursued: two consistent cross-source primary definitions already ground the gravity-collection differentia in full, and no structural necessary_parts claim is being made. OnePetro's 'Sump' entry recorded as a T1_categorical divergence (unrelated downhole-geology sense), not used as grounding.
