DDHub-Semantic-Interoperability

• Description: specialized vocabulary for the modelling of the drilling mechanics. Covers in particular the so-called torque and drag models

NOUNS

DrillStemMechanicalModel

• Display name: Drill-stem mechanical model
• Parent class: ModelType
• Attributes:
• Specialization:
• Description: A mechanical model for a drill-stem. Another standard name for drill-stem mechanical models is a torque and drag model.
• Examples:

  MechanicalStiffnessType

• Display name: Mechanical stiffness type
• Parent class: DWISNoun
• Attributes:
• Specialization:
• Description: A description of how the drill-stem stiffness is modelled.
• Examples:

  MechanicalSoftModel

• Display name: Mechanical soft model
• Parent class: MechanicalStiffnessType
• Attributes:
• Specialization:
• Description: An infinitively soft model assumes that the drill-stem deforms without any resistance when compressive loads are applied.
• Examples:

  MechanicalStiffModel

• Display name: Mechanical stiff model
• Parent class: MechanicalStiffnessType
• Attributes:
• Specialization:
• Description: A stiff mechanical model considers that the drill-stem can deform laterally when put in compression.
• Examples:

  MechanicalStiffModelAssumedContacts

• Display name: Mechanical stiff model with assumed contacts
• Parent class: MechanicalStiffModel
• Attributes:
• Specialization:
• Description: Such a stiff mechanical model presuposes the position of the contact points.
• Examples:

  MechanicalStiffModelEstimatedContacts

• Display name: Mechanical stiff model with estimated contacts
• Parent class: MechanicalStiffModel
• Attributes:
• Specialization:
• Description: Such a stiff mechanical model estimates the position of the contact points.
• Examples:

  TangencyLength

• Display name: Tangency length
• Parent class: DWISNoun
• Attributes:
• Specialization:
• Description: the position along the drill-string, counted from the bit, from which we can consider that the pipes direction is tangential with the borehole direction.
• Examples:

VERBS

IsOfMechanicalStiffnessType

• Display name: Is of mechanical stiffness type
• Subject class: DrillStemMechanicalModel
• Object class: MechanicalStiffnessType
• Description: A relation to describe how the drill-stem mechanical model manage stiffness.
• Examples:

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