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exported equivalent COPI_0000216
Bell Nipple
IRI: https://www.inf.ufrgs.br/ontologies/copi/COPI_0000216
Generated onGerado em 2026-04-15
Natural Language DefinitionDefinição em Linguagem Natural
EN
A bell nipple is a pipe that conducts drilling fluids in drilling operations and is characterized by an enlarged diameter that serves as a funnel and a location at the wellhead assembly.
PT-BR
Um bell nipple é um tubo que conduz fluidos de perfuração em operações de perfuração e é caracterizado por um diâmetro alargado que serve como funil e uma localização no conjunto da cabeça do poço.
Formal AxiomsAxiomas Formais
Semi-formal (Aristotelian)Semi-formal (Aristotélico)
Every bell nipple is a pipe that bears a DrillingFluidConductionFunction and has an enlarged diameter shape and is located at a wellhead assembly.
First-Order Logic TheoryTeoria em Lógica de Primeira Ordem
[Definition]∀x (BellNipple(x) ↔ Pipe(x) ∧ ∃f (DrillingFluidConductionFunction(f) ∧ bearerOf(x,f)) ∧ ∃bearerOf.DrillingFluidConductionFunction ⊓ ∃hasCharacteristicShape.EnlargedDiameter ⊓ ∃hasLocation.WellheadAssembly) — Steps 1–3: genus + identity-giving function [Function axiom: DrillingFluidConductionFunction]∀f (DrillingFluidConductionFunction(f) → ∀p (realizedIn(f,p) → DrillingFluidConductionProcess(p)) ∧ ∃p (DrillingFluidConductionProcess(p) ∧ realizedIn(f,p))) — Step 1: ∀ preserves type-type identity; ∃ rules out vacuous functions never realised [Necessary part: SideOutlet]∀x (BellNipple(x) → ∃p (SideOutlet(p) ∧ hasComponentPartAtAllTimes(x,p))) — Step 4: mereological commitment — every instance must have this part [Process participation signature]∀x ∀f ((BellNipple(x) ∧ DrillingFluidConductionFunction(f) ∧ bearerOf(x,f)) → ∃m1 (DrillingFluidPortion(m1) ∧ participatesIn(m1,f)) ∧ ∃m2 (DrillingTool(m2) ∧ participatesIn(m2,f)) ∧ ∃e1 (DrillingFluidPortion(e1) ∧ participatesIn(e1,f)) ∧ ∃e2 (DrillingTool(e2) ∧ participatesIn(e2,f)) ∧ processType(f,FlowDirectionControl)) — 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: BellNipple <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 . ### Identity-giving function :DrillingFluidConductionFunction rdf:type owl:Class ; rdfs:subClassOf iof-core:DesignedFunction ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000054 ; # realizedIn owl:allValuesFrom :DrillingFluidConductionProcess ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty bfo:BFO_0000054 ; # realizedIn owl:someValuesFrom :DrillingFluidConductionProcess ] ; rdfs:label "drilling fluid conduction function"@en ; rdfs:label "função de condução de fluido de perfuração"@pt-br . ### Process type :DrillingFluidConductionProcess rdf:type owl:Class ; rdfs:subClassOf iof-core:PlannedProcess ; rdfs:label "drilling fluid conduction process"@en ; rdfs:label "processo de condução de fluido de perfuração"@pt-br . :DrillingFluidConductionProcess rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasInput ; owl:someValuesFrom :DrillingFluidPortion ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasInput ; owl:someValuesFrom :DrillingTool ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasSpecifiedOutput ; owl:someValuesFrom :DrillingFluidPortion ] ; rdfs:subClassOf [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasSpecifiedOutput ; owl:someValuesFrom :DrillingTool ] . ### Equipment universal: BellNipple :BellNipple rdf:type owl:Class ; owl:equivalentClass [ rdf:type owl:Class ; owl:intersectionOf ( :Pipe [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasFunction ; # Object branch (MaterialArtifact/Assembly/Object/FiatObjectPart) owl:someValuesFrom :DrillingFluidConductionFunction ] [ rdf:type owl:Restriction ; owl:onProperty iof-core:hasComponentPartAtAllTimes ; owl:someValuesFrom :SideOutlet ] ) ] ; rdfs:label "bell nipple"@en ; rdfs:label "bell nipple"@pt-br ; iof-av:naturalLanguageDefinition "A bell nipple is a pipe that conducts drilling fluids in drilling operations and is characterized by an enlarged diameter that serves as a funnel and a location at the wellhead assembly."@en ; skos:definition "A bell nipple is a pipe that conducts drilling fluids in drilling operations and is characterized by an enlarged diameter that serves as a funnel and a location at the wellhead assembly."@en ; iof-av:naturalLanguageDefinition "Um bell nipple é um tubo que conduz fluidos de perfuração em operações de perfuração e é caracterizado por um diâmetro alargado que serve como funil e uma localização no conjunto da cabeça do poço."@pt-br ; iof-av:semiFormalNaturalLanguageAxiom "Every bell nipple is a pipe that bears a DrillingFluidConductionFunction and has an enlarged diameter shape and is located at a wellhead assembly."@en ; iof-av:firstOrderLogicAxiom "∀x(BellNipple(x) ↔ (Pipe(x) ∧ ∃f(DrillingFluidConductionFunction(f) ∧ bearerOf(x,f)) ∧ ∃s(EnlargedDiameter(s) ∧ hasCharacteristicShape(x,s)) ∧ ∃l(WellheadAssembly(l) ∧ hasLocation(x,l))))"@en ; :SideOutlet rdf:type owl:Class ; rdfs:subClassOf iof-core:MaterialArtifact ; rdfs:label "saída lateral"@pt-br ; rdfs:label "side outlet"@en . # Disjointness: BellNipple and HeatExchanger [] rdf:type owl:AllDisjointClasses ; owl:members ( :BellNipple :HeatExchanger ) . # Disjointness: BellNipple and Separator [] rdf:type owl:AllDisjointClasses ; owl:members ( :BellNipple :Separator ) . # Disjointness: BellNipple and Compressor [] rdf:type owl:AllDisjointClasses ; owl:members ( :BellNipple :Compressor ) .
Axiomatization Decision LogRegistro de Decisões
1 Identity-Giving FunctionFunção Identitária
Function class
DrillingFluidConductionFunction ⊑ DesignedFunction
Realized in
DrillingFluidConductionProcess ⊑ PlannedProcess
The identity-giving function is to conduct drilling fluid in drilling operations, specifically directing return flow from the wellbore to processing equipment and providing a conduit for tool entry. This is distinct from general FluidConductionFunction as it is specialized for drilling operations context.
2 Genus DeterminationDeterminação do Gênero
pipebfo:Object (BFO_0000030)
Bell nipple is consistently described as a 'pipe' or 'section of pipe' across all sources. The parent candidates include PIPING NETWORK SEGMENT from ISO 15926, which aligns with the pipe genus. The enriched pipe class with FluidConductionFunction is the most specific appropriate superclass, as bell nipple is specialized piping for drilling operations.
3 Differentia SpecificaDiferença Específica
∃bearerOf.DrillingFluidConductionFunction ⊓ ∃hasCharacteristicShape.EnlargedDiameter ⊓ ∃hasLocation.WellheadAssembly

A bell nipple is distinguished from other pipes by its specialized function in drilling fluid conduction, its characteristically enlarged diameter that serves as a funnel, and its specific location at the wellhead assembly.

The differentia captures the three key distinguishing aspects: the specialized drilling context function (beyond general fluid conduction), the characteristic enlarged/funnel geometry that enables tool guidance, and the specific wellhead installation location that differentiates it from other specialized pipes.
4 Necessary PartsPartes Necessárias
Part classParentRelation
SideOutletMaterialArtifacthasComponentPartAtAllTimes
These parts are universally necessary for bell nipple function - the enlarged bore provides the funnel capability for tool guidance, while the side outlet enables drilling fluid return flow attachment.
Process Participation SignatureAssinatura de Participação em Processo
InputsEntradas
{'type': 'DrillingFluidPortion', 'count': 1, 'constraints': 'returning from wellbore'}, {'type': 'DrillingTool', 'count': 1, 'constraints': 'entering wellbore'}
OutputsSaídas
{'type': 'DrillingFluidPortion', 'count': 1, 'constraints': 'directed to flow line'}, {'type': 'DrillingTool', 'count': 1, 'constraints': 'guided into wellbore'}
TransformationTransformação
spatial guidance and flow direction - no material transformation
Bell nipple serves dual function: conducting drilling fluid return flow and providing guidance for drilling tools entering the wellbore. It performs spatial routing without material transformation.
Disjoint WithDisjunto com
heat exchanger separator compressor
C4: heat exchanger, separator, compressor. Bell nipple has a pure conduction/guidance signature with no energy transfer, phase separation, or compression, making it incompatible with equipment that performs material or energy transformations.
MetadataMetadados
COPI IDCOPI IDCOPI_0000216
IRIIRIhttps://www.inf.ufrgs.br/ontologies/copi/COPI_0000216
StatusStatusexported
Axiom modeModoequivalent
CreatedCriado2026-04-15
UpdatedAtualizado2026-06-28
LLM modelModelo LLMclaude-sonnet-4-20250514
VersionVersão2026-07-13
Quick factsDados rápidos
GenusGêneropipe
Root classClasse raizMaterialArtifact
Axiom modeModoequivalent
FunctionFunçãoDrillingFluidConductionFunction
ProcessProcessoDrillingFluidConductionProcess
PartsPartes1
Source DefinitionsDefinições nas Fontes 4 sources
ISO 15926-4 BELL NIPPLE
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.
CFIHOS bell nipple
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.
SLB Glossary bell nipple
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 Bell nipple
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.