The interfacial tension between two phases in a porous medium divided by the mean radius of curvature of the enclosing pore volume. This describes the pressure change at a immiscible fluid phase interface in a porous system at a single condition of saturation.

ref_capillary_pressure (M, K: ref_capillary_pressure)

The kind of capillary pressure point, either drainage or imbibition.


ref_capillary_pressure_usage (O, K: ref_capillary_pressure_usage)

The description of the intended meaning of the capillary pressure value, such as threshold, irreducible, or critical.


capillary_pressure_curve (O, K: capillary_pressure_curve(capillary_pressure_point))

This is the capillary pressure curve that this point is defined as being part of. The rock fluid feature being characterized is described by the capillary pressure curve. Each capillary_pressure_point may characterize one capillary_pressure_curve.


rock_fluid_interaction (O, K: rock_fluid_interaction(capillary_pressure_point))

Specifies the rock and fluid combination for which this capillary pressure is descriptive. Each capillary_pressure_point may characterize one rock_fluid_interaction.


nonwetting_phase (M, K: fluid_phase(nonwets_capillary_pressure_point)) (1169)

The fluid phase that is designated as the nonwetting phase for the capillary pressure point. Each capillary_pressure_point must have as nonwetting one fluid_phase.


wetting_phase (M, K: fluid_phase(wets_capillary_pressure_point)) (1169)

The fluid phase that is designated as the wetting phase for the capillary pressure point. Each capillary_pressure_point must have as wetting one fluid_phase.


description (O: ndt_comment)

A remark about the capillary pressure point.


data_collection (I, V: SET[0:?] data_collection(collection_content))

Indicates the data collections that include this instance of E and P data. Each capillary_pressure_point may be a member of one or more data_collection. Inherited from e_and_p_data.


datum_for_ranking (I, V: SET[0:?] object_ranking(base_object))

Indicates that an object is being used as a basis for comparison with another object. Each capillary_pressure_point may datum for ranking one or more object_ranking. Inherited from object_of_interest.


graphical_element (I, V: SET[0:?] graphical_element(depicted_object))

Specifies one or more graphical elements which are depicting this data item. Each capillary_pressure_point may be depicted by one or more graphical_element. Inherited from e_and_p_data.


object_of_ranking (I, V: SET[0:?] object_ranking(ranked_object))

Indicates that an object is being classified in a rank order based on its characteristics. Each capillary_pressure_point may object of ranking one or more object_ranking. Inherited from object_of_interest.


pty_capillary_pressure_point (V: SET[0:?] pty_capillary_pressure_point(capillary_pressure_point))

Each capillary_pressure_point may have a property of one or more pty_capillary_pressure_point.

Local rules:

Uniqueness Constraint
ref_capillary_pressure, ref_capillary_pressure_usage, capillary_pressure_curve, rock_fluid_interaction, nonwetting_phase, wetting_phase
Different Related Instance
Each CAPILLARY PRESSURE POINT must have as wetting a different instance of FLUID PHASE than the instance of FLUID PHASE that it has as nonwetting.
Mandatory Relationship Set
Each capillary_pressure_point must either characterize a capillary_pressure_curv e or a rock_fluid_interaction.
Supertype path(s):
e_and_p_data > object_of_interest > technical_object > capillary_pressure_point.

Entity projects as table CAP_PRS_PT.

Referenced in Diagrams:

• RVI: Rock Fluid Interaction (1169)