| POSC Specifications Version 2.2 | Epicentre Logical Data Model |
For earth surface features which contain multiple discrete surface areas, spatial representation is not supported. We need an Earth surface composite position. A lease may specify multiple, non-contiguous surface areas. See Position in wellbore, position in earth model, for analogues.
A new entity general_surface_composite was added as a subtype of composite_spatial_object and position_on_earth_surface to represent composite spatial objects on the surface of the Earth. An optional many-to-many relationship was added to describe the parts/assembly relationship.
Added objects:
general_surface_composite (Entity)
general_surface_composite.be_composed_of (Attribute)
position_on_earth_surface.be_part_of (Attribute)
pty_geometry_2d_ring.general_surface_composite (Attribute)
Add the new entity general_surface_composite to existing diagrams.
Modified objects:
CT2:_Earth_Surface_Topology (Diagram)
EMG4:_Earth_Model_Objects (Diagram)