POSC Specifications: Epicentre Version 3.0 | Logical Data Model |
These are the PVT properties of an aqueous fluid defined at given pressures and temperatures. The pressure and temperature values are optional but should always be recorded, if available.
- fluid_phase_aqueous (M, K: fluid_phase_aqueous(fluid_phase_aqueous_pvt)) (C128)
- This is the aqueous fluid phase for which these PVT properties are defined. Each fluid_phase_aqueous_pvt must characterize one fluid_phase_aqueous.
- pressure (O, K: ndt_pressure) (C128)
- This is the pressure at which these PVT properties are defined.
- temperature (O, K: ndt_temperature) (C128)
- This is the temperature at which these PVT properties are defined.
- activity (O, K, I: activity(process_data))
- Defines the activity which created this instance. Each fluid_phase_aqueous_pvt may be the result of one activity. Inherited from process_data.
- compressibility (O: ndt_compressibility) (C128)
- The measure of the change in volume of a fluid with respect to a unit change in pressure; expressed as a positive value for fluids that shrink as pressure is increased.
- density (O: ndt_density_liquid) (C128)
- Mass per unit volume of a fluid.
- description (O, I: ndt_comment) (C117)
- A remark or comment about the instance. Inherited from e_and_p_data.
- formation_volume_factor (O: ndt_std_volume_per_volume) (C128)
- The ratio of the volume occupied by a quantity of fluid at reservoir conditions to that occupied by the same quantity at stock tank or standard conditions. This is the inverse of the shrinkage factor.
- instance_create_date (O, I: ndt_date_tod) (C126)
- This is the date that this instance was created. This date is defined by the source if imported, or is the date the instance is created if a new instance. Inherited from e_and_p_data.
- instance_creator (O, I: ndt_identifier) (C126)
- This is the person, company or application that created this instance. This identifies the party responsible for loading this instance. Inherited from e_and_p_data.
- last_updated (O, I: ndt_date_tod) (C126)
- This is the date that this instance was last updated. This value should be updated when any part of this instance is altered (except for inverse relationships). Inherited from e_and_p_data.
- last_updated_by (O, I: ndt_identifier) (C126)
- This records the person or application making the update to this instance. Inherited from e_and_p_data.
- molar_density (O: ndt_concentration_mole_per_volume) (C128)
- The ratio of the number of moles to the molar volume for a fluid.
- shrinkage_factor (O: ndt_volume_per_std_volume) (C128)
- The ratio of the volume occupied by a quantity of fluid at standard conditions to that occupied by the same quantity at reservoir conditions. This is the inverse of the formation volume factor.
- solution_gas_water_ratio (O: ndt_std_volume_ratio) (C128)
- The amount of natural gas contained in water expressed as a ratio of volumes at standard temperature and pressure.
- source (O, I: ndt_identifier) (C126)
- The provider of this instance, which is usually a data provider for imported/purchased data. If this instance is provided by POSC, then this attribute must be "POSC". Inherited from e_and_p_data.
- specific_molar_volume (O: ndt_specific_volume_mole) (C128)
- A specific volume of a fluid given as a mole basis.
- specific_volume (O: ndt_specific_volume_mass_liquid) (C128)
- A specific volume of a liquid given as a mass basis.
- viscosity (O: ndt_viscosity_dynamic) (C128)
- This describes the (dynamic) viscosity of a fluid.
- viscosity_kinematic (O: ndt_viscosity_kinematic) (C128)
- The dynamic viscosity of a fluid divided by the density of the fluid.
- viscous_compressibility (O: ndt_compressibility) (C128)
- The change in viscosity of a fluid with pressure divided by the original viscosity.
- data_collection (I, V: SET[0:?] data_collection_content(collection_part)) (C020)
- Indicates the data collections that include this instance of E and P data. Each fluid_phase_aqueous_pvt may be a member of one or more data_collection_content. Inherited from e_and_p_data.
- document_information_content (I, V: SET[0:?] document_information_content(e_and_p_data)) (C136)
- These are the document specification parts that include this data value and define its meaning within a document specification. Each use may define a different meaning, and many uses are allowed. Each fluid_phase_aqueous_pvt may be included in one or more document_information_content. Inherited from e_and_p_data.
- fluid_property_set (O: fluid_property_set(fluid_phase_aqueous_pvt)) (C128)
- This is the fluid property set within which these fluid property values are a part. Each fluid_phase_aqueous_pvt may belong to one fluid_property_set.
- graphical_element (I, V: SET[0:?] graphical_element(depicted_object))
- Specifies one or more graphical elements which are depicting this data item. Each fluid_phase_aqueous_pvt may be depicted by one or more graphical_element. Inherited from e_and_p_data.
- process_data_item (I, V: SET[0:?] process_data_item(process_data))
- Defines where this data was used by an activity. Each fluid_phase_aqueous_pvt may be the value for one or more process_data_item. Inherited from process_data.
Local rules:
- Uniqueness Constraint (C128)
- fluid_phase_aqueous, pressure, temperature, activity
- Same Related Instance (C128)
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The fluid system described by these characteristics must be the same fluid system described by the fluid property set these characteristics belongs to.
Supertype path(s):
Referenced in Diagrams:
Generated on Tue Jul 10 15:42:16 2001
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