Entity geoid


Attribute                                 Flags   Data Type

From reference_behavior:
   source_reference                       I       ref_source_reference

                                          The reference used by source to provide the standard
                                          instance, such as Petroleum Industry Data Dictionary
                                          (PIDD), Websters Ninth New Collegiate Dictionary,
                                          etc. 

   source                                 MI      ref_source

                                          The provider of this instance of reference information.
                                          If this instance is provided by POSC, then this
                                          attribute must be "POSC". 


From technical_object:
   data_collection                        IV      set[0 .. N] of (data_collection)

                                          Indicates the data collections that include this
                                          instance of E and P data. 

   graphical_element                      IV      set[0 .. N] of (graphical_element)

                                          Specifies one or more graphical elements which
                                          are depicting this data item. 

   datum_for_ranking                      IV      set[0 .. N] of (object_ranking)

                                          Indicates that an object is being used as a basis
                                          for comparison with another object. 

   object_of_ranking                      IV      set[0 .. N] of (object_ranking)

                                          Indicates that an object is being classified in
                                          a rank order based on its characteristics. 


From vertical_datum:
   secondary_topological_relationship     IV      set[0 .. N] of (topological_relationship)

                                          Indicates a topological relationship in which
                                          the object is in the role of secondary agent.
                                          For an object intersection type of "inside" this
                                          is the contained role (e.g., if a well is inside
                                          a field then the well would be the secondary agent).
                                          For all other object intersection types the roles
                                          are symmetrical and both relationships must be
                                          searched for a particular object. For example,
                                          if a wellbore and a formation overlap then either
                                          could be chosen as the secondary agent with the
                                          other chosen as the primary agent. 

   primary_topological_relationship       IV      set[0 .. N] of (topological_relationship)

                                          Indicates a topological relationship in which
                                          the topologic object has the role of primary agent.
                                          For an object intersection type of "inside" this
                                          is the containing role (e.g., if a city is inside
                                          a county then the county would be the primary
                                          agent). For all other object intersection types
                                          the roles are symmetrical and both relationships
                                          must be searched for a particular object. For
                                          example, if a wellbore and a formation overlap
                                          then either could be chosen as the primary agent
                                          with the other chosen as the secondary agent.

   intersection_role                      IV      set[0 .. N] of (space_time_operation)

                                          Indicates a space/time operation for which the
                                          object is involved as an intersecting agent. For
                                          projection, this is the screen on which an object
                                          is being projected. For proximity, this is the
                                          magnet object. 

   primary_role                           IV      set[0 .. N] of (space_time_operation)

                                          Indicates a space/time operation for which the
                                          object is involved as a primary agent. For
                                          degeneration, this object is being degenerated.
                                          For projection, this object is being projected
                                          onto another object. For proximity, this is the
                                          container object. 

   source_space_time_operation            IV      bag[0 .. 1] of (space_time_operation)

                                          Indicates the space/time operation from which
                                          a topological object was the result. For addition,
                                          this is the union of two objects. For degeneration,
                                          this is the degenerate object. 

   other_composite_spatial_object         IV      set[0 .. N] of (other_composite_spatial_object)

                                          Defines the set of composite spatial objects of
                                          which this spatial object is a component. 

   earth_model                            IV      set[0 .. N] of (earth_model)

                                          Indicates various earth models which include this
                                          spatial representation. 

   shell                                  I       set[0 .. N] of (shell)

                                          Defines the shells of which this face is a component.

   bounding_ring                          I       set[0 .. N] of (ring)

                                          Defines the set of rings which form the boundary
                                          of the face. For example, a polygon can be bounded
                                          by one ring while a face with a hole in it can
                                          be bounded by two rings. 

   pty_geometry_2d_face                   IV      set[0 .. N] of (pty_geometry_2d_face)

                                          may have a property of 

   pty_geometry_3d_face                   IV      set[0 .. N] of (pty_geometry_3d_face)

                                          may have a property of 

   pty_area                               IV      set[0 .. N] of (pty_area)

                                          may have a property of 

   measured_depth_system_axis             IV      set[0 .. N] of (measured_depth_system_axis)

                                          These are the measured depth axes that use this
                                          vertical datum as the reference for vertical
                                          measurements, meaning measured depth is zero at
                                          this datum. 

   vertical_time_system_axis              IV      set[0 .. N] of (vertical_time_system_axis)

                                          The set of vertical time coordinate system axes
                                          that use this vertical datum as the location of
                                          origin of the time axis. 

   datum_for_axis                         IV      set[0 .. N] of (vertical_depth_system_axis)

                                          The set of vertical depth system axes that use
                                          this vertical datum as their measurement datum.

   orient_axis                            IV      set[0 .. N] of (vertical_depth_system_axis)

                                          The set of vertical depth system axes that are
                                          defined to be oriented normal to this vertical
                                          datum. 

   local_vertical_datum                   IV      set[0 .. N] of (local_vertical_datum)

                                          The local vertical datums that are defined to
                                          be parallel to this vertical datum. 

   initiate_offset                        IV      set[0 .. N] of (vertical_datum_offset)

                                          The set of vertical datum offsets that define
                                          this datum as the initial datum. These offsets
                                          are described as being normal to this vertical
                                          datum. For an offset being defined as from A to
                                          B, this describes the datum as being used as A.

   terminate_offset                       IV      set[0 .. N] of (vertical_datum_offset)

                                          The set of vertical datum offsets that define
                                          this datum as a terminal datum. This means the
                                          an offset being expressed from A to B would refer
                                          to this vertical datum as B. 


description                                       ndt_comment

                                          Remark about the geoid. 

identifier                                MU      ndt_name

                                          The identifier of the geoid. 

geoid_model                                       geoid_model

                                          This is the geoid model used to generate this
                                          geoid. 

End of entity geoid


M - mandatory, U - unique, I - inherited, V - inverse, N - named type


EPICENTRE schema version 2.1

INDEX august POSC Mobil ABOUT
The Epicentre schema is copyright © 1994, 1995, 1996 by POSC, Houston, Texas, USA