8.2.2 Facets

In addition to property kind to define semantics, facets are a mechanism that give some context about the nature of the property. Each property kind can be associated with as many property kind facets as needed.

NOTE: Recommended best practice is to you use facets instead of creating a specialized local property kind.

Facets can represent any of the following:

• Conditions of acquisition, which, for example, allows distinguishing between surface conditions and reservoir conditions.
• Direction, which, for example, can indicate vertical or horizontal permeability.
• NetGross, which, for example, indicates the difference between net and gross volumes.
• Statistics can be used to indicate if values are minimum, maximum, average, etc.
• What, which indicates the element that is measured, for example, in a mineral concentration measurement, the mineral name.
• Qualifier is used to capture any other context, that doesn’t' fit into one of the above types.