Definition & axiom
⚠ Conflicts with the ISO 15926-4 primary definition
Label (EN)
degasser
Label (PT-BR)
Definition (EN)
Definition (PT-BR)
Semi-formal axiom (Aristotelian)
Axiom type
LLM classification basis: function-based → ≡
The degasser is defined primarily by its function of removing gases from drilling fluids, which is its identity-giving purpose. While it may have specific physical mechanisms, the definitions focus on the gas removal function rather than structural configuration.
Validation status
Why primitive (necessary only)
Reviewer notes
FOL theory & disjointness
First-order logic theory (generated)
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Disjoint with
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Expert review
Axiomatization steps
1
Identity-Giving Function
✓ done
DegassingFunction → DegassingProcess ⊑ MassTransfer
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COPI-Core operation
MassTransfer via process parent MassTransfer
LLM rationale:
The identity-giving function is removing gases (air, methane, H2S, CO2) from drilling fluids. This is what makes a degasser a degasser rather than any other type of separator or processing equipment.
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Expert review
2
Genus Proximus
✓ done
Separator · Assembly
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Genus (genus proximum)
Most specific superclass — may be a domain class like "Valve" or an IOF-Core root.
BFO/IOF-Core Root
bfo:Object branch
bfo:ObjectAggregate branch
bfo:ImmaterialEntity branch
LLM rationale:
ISO 15926 explicitly states that a degasser is a 'FLASH SEPARATOR', and separation equipment is already defined in our ontology. Separator is the most specific appropriate superclass, as degassing is fundamentally a gas-liquid separation process. The parent_candidates include 'FLASH SEPARATOR' which maps to our Separator class.
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Expert review
3
Differentia Specifica
✓ done
∃bearerOf.DegassingFunction ⊓ ∃participatesIn.GasRemovalProcess
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Conditions that distinguish
Degasser
from sibling classes under genus
Separator.
Only what is not already entailed by the genus.
Differentia expression
Differentia (natural language)
LLM rationale:
The differentia specifies the unique gas removal function from drilling fluids. This goes beyond the generic separation function inherited from Separator genus to specify the particular type of separation (degassing) and the specific fluid type (drilling fluid).
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Expert review
4
Necessary Parts
✓ done
no necessary parts
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Consider part-whole relations beyond subsumption:
hasComponentPartAtAllTimes (universal, structurally essential)
· hasComponentPartAtSomeTime (contingent, optional component)
LLM rationale:
These parts represent the minimal physical components necessary for any degassing operation: intake of gas-laden fluid, separation chamber, and separate outlets for gas and cleaned fluid.
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Expert review
5
Process Participation Signature ⟨I, O, T⟩
✓ done
DrillingFluid → DrillingFluid + PortionOfGas
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Inputs (I)
Outputs (O)
Transformation (T)
LLM rationale:
The process takes gas-laden drilling fluid and separates it into degassed liquid and removed gas streams. This is a gas-liquid separation transformation specific to drilling operations.
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Expert review
More
Alternative labels
none
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Synonyms / alternative labels (comma-separated) — skos:altLabel
Language auto-detected on export (PT if the label contains accents, EN otherwise).
Properties as BFO qualities
0 of 42 selected
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Select which CFIHOS/DEXPI properties inhere in every instance of Degasser as
bfo:Quality subclasses.
Each selected property →
:DegasserQuality ⊑ bfo:Quality, inheres in :Degasser
Custom axioms
none
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Axioms not produced by the pipeline. Each is appended verbatim as an
rdfs:subClassOf restriction on Degasser.
Write the restriction block in Turtle syntax (without the leading
rdfs:subClassOf).
Example: [ owl:onProperty :hasPart ; owl:someValuesFrom :Wellhead ]
Cross-standard divergences
none detected yet
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Click "Detect divergences" to analyse cross-standard disagreements for this cluster.
