Entity seismic_feature

• An identifiable linear, surfacic or regional feature within a seismic image of the Earth. This is intended to represent the interference pattern as seen on the seismic section and is not intended to replace the geologic features which may have contributed to the seismic character. For example, a fault should be instantiated as a geologic fault but the diffractions or shadow zone associated with the fault may be instantiated as seismic features.

Attribute                                 Flags   Data Type

From geologic_feature:
   geologic_province                      I       set[0 .. N] of (geologic_province)

                                          Specifies the land area within which this geologic
                                          feature has a particular name or identifier. 

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

                                          Indicates the geologic processes which acted to
                                          produce this geologic feature. 

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

                                          Specifies the surface position or intersection
                                          of a geologic feature. 

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

                                          Specifies the spatial intersection of a geologic
                                          feature and a well path. 

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

                                          A version of the representation of a geologic
                                          feature as a spatial primitive in an earth model.

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

                                          The classification of the geologic feature based
                                          on its character in one seismic data set. 

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

                                          The set of interpreted associations of this geologic
                                          feature with a seismic feature. 


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. 


description                                       ndt_comment

                                          A textual description of the feature. 

identifier                                U       ndt_name

                                          The identifying name of the feature. 

seismic_geometry_set                      U       seismic_geometry_set

                                          Defines the geometry set which identifies this
                                          feature. This defines a scope for the name of
                                          the feature. 

whole                                     U       seismic_feature

                                          Defines the feature that this feature is a part
                                          of. 

part                                      V       set[0 .. N] of (seismic_feature)

                                          Defines the component parts of this feature. 

represented_feature                       V       set[0 .. N] of (interpreted_feature_association)

                                          The set of interpreted associations of this seismic
                                          feature with geologic features. 

pty_element_value                         V       set[0 .. N] of (pty_element_value)

                                          may have a property of 

End of entity seismic_feature

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