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exported necessary COPI_0000376
Wellbore
IRI: https://www.inf.ufrgs.br/ontologies/copi/COPI_0000376
Generated onGerado em 2026-04-14
Natural Language DefinitionDefinição em Linguagem Natural
EN
A wellbore is a site that provides a drilled pathway for subsurface access and is spatially contained within a well system.
PT-BR
Um poço perfurado é um local que fornece um caminho perfurado para acesso subsuperficial e está espacialmente contido dentro de um sistema de poço.
Formal AxiomsAxiomas Formais
Semi-formal (Aristotelian)Semi-formal (Aristotélico)
Every wellbore is a site that has the function of providing subsurface access and is spatially contained within a well.
First-Order Logic TheoryTeoria em Lógica de Primeira Ordem
[Necessary condition]∀x (Wellbore(x) → Site(x) ∧ ∃f (SubsurfaceAccessFunction(f) ∧ bearerOf(x,f))) — Steps 1–3: genus + identity-giving function [Function axiom: SubsurfaceAccessFunction]∀f (SubsurfaceAccessFunction(f) → ∀p (realizedIn(f,p) → SubsurfaceAccessProcess(p)) ∧ ∃p (SubsurfaceAccessProcess(p) ∧ realizedIn(f,p))) — Step 1: ∀ preserves type-type identity; ∃ rules out vacuous functions never realised [Structural differentia (necessary only)]∀x (Wellbore(x) → ∃bearerOf.SubsurfaceAccessFunction ⊓ ∃spatiallyContainedIn.Well) — Step 3: structural property — necessary condition, not sufficient (OWA prevents ≡) [Process participation signature]∀x ∀f ((Wellbore(x) ∧ SubsurfaceAccessFunction(f) ∧ bearerOf(x,f)) → ∃m1 (DrillingFluid(m1) ∧ participatesIn(m1,f)) ∧ ∃m2 (DrillString(m2) ∧ participatesIn(m2,f)) ∧ ∃e1 (CuttingsAndFluid(e1) ∧ participatesIn(e1,f)) ∧ ∃e2 (Wellbore(e2) ∧ participatesIn(e2,f)) ∧ processType(f,SubsurfaceAccess)) — Step 5: typed participants in the realising process
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: Wellbore <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 "1.1.0-104-g4d16eff" ; 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 "2026-07-13"^^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 . :SubsurfaceAccessProcess rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasInput ; owl:someValuesFrom :DrillingFluid ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasInput ; owl:someValuesFrom :DrillString ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasSpecifiedOutput ; owl:someValuesFrom :CuttingsAndFluid ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasSpecifiedOutput ; owl:someValuesFrom :Wellbore ] . ### Equipment universal: Wellbore :Wellbore rdf:type owl:Class ; rdfs:subClassOf bfo:BFO_0000029 ; rdfs:label "wellbore"@en ; rdfs:label "poço perfurado"@pt-br ; iof-av:naturalLanguageDefinition "A wellbore is a site that provides a drilled pathway for subsurface access and is spatially contained within a well system."@en ; skos:definition "A wellbore is a site that provides a drilled pathway for subsurface access and is spatially contained within a well system."@en ; iof-av:naturalLanguageDefinition "Um poço perfurado é um local que fornece um caminho perfurado para acesso subsuperficial e está espacialmente contido dentro de um sistema de poço."@pt-br ; iof-av:semiFormalNaturalLanguageAxiom "Every wellbore is a site that has the function of providing subsurface access and is spatially contained within a well."@en ; iof-av:firstOrderLogicAxiom "∀x(Wellbore(x) ↔ Site(x) ∧ ∃f(SubsurfaceAccessFunction(f) ∧ hasFunction(x,f)) ∧ ∃w(Well(w) ∧ spatiallyContainedIn(x,w)))"@en ; iof-av:isPrimitive "true"^^xsd:boolean ;
Axiomatization Decision LogRegistro de Decisões
1 Identity-Giving FunctionFunção Identitária
Function class
SubsurfaceAccessFunction ⊑ DesignedFunction
Realized in
SubsurfaceAccessProcess ⊑ PlannedProcess
A wellbore's identity is grounded in providing a designed path for accessing subsurface resources. This is distinct from the broader SubsurfaceResourceInteractionFunction of a well - the wellbore specifically provides the access pathway, while the well system performs the interaction/extraction/injection operations.
2 Genus DeterminationDeterminação do Gênero
Site
A wellbore is fundamentally a spatial region - a drilled hole or cavity with engineered boundaries. It is not a material artifact but rather an immaterial entity (a hole/cavity/channel) defined by its spatial extent and engineered boundaries. This aligns with BFO Site (BFO_0000029) as a spatial region defined by boundaries. While 'Well' appears as a parent candidate, the wellbore is a spatial component of the well system, not a material object itself.
3 Differentia SpecificaDiferença Específica
∃bearerOf.SubsurfaceAccessFunction ⊓ ∃spatiallyContainedIn.Well

A site that provides a drilled pathway for subsurface access and is spatially contained within a well system.

The differentia combines the functional aspect (subsurface access) with the spatial relationship (contained within a well system). This distinguishes wellbore from other engineered spatial regions and establishes its role within the well system.
4 Necessary PartsPartes Necessárias

No necessary parts recorded.

As a Site (spatial region/hole), a wellbore does not have material component parts. The hole itself is defined by its boundaries and spatial extent, not by constituent material objects. Equipment and structures may be installed within the wellbore, but they are not component parts of the spatial region itself.
Process Participation SignatureAssinatura de Participação em Processo
InputsEntradas
{'type': 'DrillingFluid', 'count': 1, 'constraints': 'circulation during drilling'}, {'type': 'DrillString', 'count': 1, 'constraints': 'drilling equipment passage'}
OutputsSaídas
{'type': 'CuttingsAndFluid', 'count': 1, 'constraints': 'removed rock and fluid'}, {'type': 'Wellbore', 'count': 1, 'constraints': 'pathway to target formation'}
TransformationTransformação
spatial creation - conversion of solid rock volume into accessible pathway
The wellbore enables transformation of inaccessible subsurface volume into an accessible pathway, with drilling fluids and equipment as inputs and cuttings removal plus access provision as outputs.
MetadataMetadados
COPI IDCOPI IDCOPI_0000376
IRIIRIhttps://www.inf.ufrgs.br/ontologies/copi/COPI_0000376
StatusStatusexported
Axiom modeModonecessary
CreatedCriado2026-04-14
UpdatedAtualizado2026-06-26
LLM modelModelo LLMclaude-sonnet-4-20250514
VersionVersão2026-07-13
Quick factsDados rápidos
GenusGêneroSite
Root classClasse raizSite
Axiom modeModonecessary
FunctionFunçãoSubsurfaceAccessFunction
ProcessProcessoSubsurfaceAccessProcess
PartsPartes0
Source DefinitionsDefinições nas Fontes 3 sources
SLB Glossary wellbore
Definition text withheld (copyrighted standard) — follow the source link above.Texto da definição omitido (norma protegida por direitos autorais) — acesse o link da fonte acima.
ONEPETRO_GLOSSARY Wellbore
Definition text withheld (copyrighted standard) — follow the source link above.Texto da definição omitido (norma protegida por direitos autorais) — acesse o link da fonte acima.
PPDM Wellbore
Definition text withheld (copyrighted standard) — follow the source link above.Texto da definição omitido (norma protegida por direitos autorais) — acesse o link da fonte acima.