POSC Specifications: Epicentre Version 3.0 | Logical Data Model |
These are the PVT properties of a vapor fluid defined at given pressures, temperatures and dew point pressures. The pressure, temperature and dew point values are optional but should always be recorded, if available. When the dew point is not defined, it is assumed that the fluid is saturated (that is, the gas is a wet gas and the dew point pressure is the fluid pressure). When the dew point is less than the fluid pressure, the gas is a dry gas.
- fluid_phase_vapor (M, K: fluid_phase_vapor(fluid_phase_vapor_pvt)) (C128)
- This is the vapor fluid phase for which these PVT properties are defined. Each fluid_phase_vapor_pvt must characterize one fluid_phase_vapor.
- 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.
- dew_point (O, K: ndt_pressure) (C128)
- The saturation pressure of the fluid. The pressure of a vapor phase fluid system when it is in equilibrium with an infinitesimal amount of liquid phase.
- activity (O, K, I: activity(process_data))
- Defines the activity which created this instance. Each fluid_phase_vapor_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_gas) (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.
- gas_pseudo_pressure (O: ndt_pseudo_pressure) (C128)
- The real gas potential which expresses gas pressure after correcting for changes in gas viscosity and z factor with pressure.
- 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.
- pseudoreduced_compressibility (O: ndt_real4) (C128)
- A correlating term defined as the compressibility of a gas multiplied by the pseudocritical pressure of the gas.
- pseudoreduced_pressure (O: ndt_real4) (C128)
- The pressure of a fluid divided by its pseudocritical pressure.
- pseudoreduced_temperature (O: ndt_real4) (C128)
- The temperature of a fluid divided by its pseudocritical temperature.
- 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.
- 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_gas) (C128)
- A specific volume of a vapor 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.
- volatile_oil_gas_ratio (O: ndt_std_volume_ratio) (C128)
- The ratio of the standard volume of crude oil in the vapor phase to the standard volume of natural gas in the vapor phase.
- z_factor (O: ndt_real4) (C128)
- The behavior of the ideal gas deviation factor (z factor) at a condition of pressure and temperature for a vapor phase.
- 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_vapor_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_vapor_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_vapor_pvt)) (C128)
- This is the fluid property set within which these fluid property values are a part. Each fluid_phase_vapor_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_vapor_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_vapor_pvt may be the value for one or more process_data_item. Inherited from process_data.
Local rules:
- Uniqueness Constraint (C128)
- fluid_phase_vapor, pressure, temperature, dew_point, activity
- Same Related Instance (C128)
-
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 15:42:23 2001
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