POSC Specifications: Epicentre Version 3.0 | Logical Data Model |
These are the PVT properties of an oleic fluid defined at given pressures, temperatures and bubble point pressures. The pressure, temperature and bubble point values are optional but should always be recorded, if available. When the bubble point is not defined, it is assumed that the fluid is saturated (that is, the bubble point pressure is the fluid pressure). When the bubble point is less than the fluid pressure, the fluid is undersaturated.
- fluid_phase_oleic (M, K: fluid_phase_oleic(fluid_phase_oleic_pvt)) (C128)
- This is the oleic fluid phase for which these PVT properties are defined. Each fluid_phase_oleic_pvt must characterize one fluid_phase_oleic.
- 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.
- bubble_point (O, K: ndt_pressure) (C128)
- The saturation pressure of the fluid. The pressure of a liquid phase fluid system when it is in equilibrium with an infinitesimal amount of vapor phase.
- activity (O, K, I: activity(process_data))
- Defines the activity which created this instance. Each fluid_phase_oleic_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 oleic phase 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_oil_pseudo_pressure (O: ndt_pseudo_pressure) (C128)
- The real gas potential of a fluid that accounts for the presence of both oil and gas.
- 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 oil at standard conditions to that occupied by the same quantity at reservoir conditions. This is the inverse of the formation volume factor.
- solution_gas_oil_ratio (O: ndt_std_volume_ratio) (C128)
- The amount of natural gas contained in crude oil 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.
- total_formation_volume_factor (O: ndt_std_volume_per_volume) (C128)
- The ratio of the volume occupied by a quantity of oleic phase at reservoir conditions to that occupied by the same fluid at stock tank or standard conditions, including the volume of the evolved gas.
- 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.
- y_factor (O: ndt_real4) (C128)
- A dimensionless compressibility factor used to correlate and smooth laboratory measurements.
- 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_oleic_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_oleic_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_oleic_pvt)) (C128)
- This is the fluid property set within which these fluid property values are a part. Each fluid_phase_oleic_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_oleic_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_oleic_pvt may be the value for one or more process_data_item. Inherited from process_data.
Local rules:
- Uniqueness Constraint (C128)
- fluid_phase_oleic, pressure, temperature, bubble_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.
- Instance Value Constraint (C128)
-
The characteristic pressure must always be equal to or greater than the bubble point pressure.
Supertype path(s):
Referenced in Diagrams:
Generated on Tue Jul 10 15:42:21 2001
© Copyright 2001 POSC. All rights reserved.