A position within the Earth which is characterized as a shell.

identifier (O, K, I: ndt_name)

The local label used to identify an earth model object. Inherited from earth_model_object.


identifying_whole (O, K, I: earth_position_composite(identify_part))

Specifies the composite spatial object to which this one belongs. Each earth_position_shell may identified by one earth_position_composite. Inherited from earth_position_simple.


seismic_geometry_set (O, K, I: seismic_geometry_set(earth_position_simple))

Defines the geometry set which partially identifies this geometrical interpretation. This will typically point to the "2D line". Each earth_position_shell may identified by one seismic_geometry_set. Inherited from earth_position_simple.


geologic_feature (O, K, I: geologic_feature(position_in_earth_model))

The geologic feature being represented by this position in the earth subsurface. Each earth_position_shell may represent one geologic_feature. Inherited from position_in_earth_model.


geoscience_interpretation (O, K, I: geoscience_interpretation(earth_model_object))

The activity which created this object. Each earth_position_shell may result of one geoscience_interpretation. Inherited from earth_model_object.


description (O, I: ndt_comment)

A textual description of the earth model object. Inherited from earth_model_object.


binset (O, I: binset(position_in_earth_model))

Defines the binset which is implied by the grid used in the geometry specification. The grid of the binset is defined using "bin line index" and/or "bin point index" values. The binset has properties which locate the grid in 2D space. Each earth_position_shell may use grid from one binset. Inherited from position_in_earth_model.


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

Indicates the data collections that include this instance of E and P data. Each earth_position_shell 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 earth_position_shell may datum for ranking one or more object_ranking. Inherited from object_of_interest.


earth_model (I, V: SET[0:?] earth_model(spatial_object))

Indicates various earth models which include this spatial representation. Each earth_position_shell may be part of one or more earth_model. Inherited from spatial_object.


face (I, V: SET[0:?] face(shell))

Defines the faces which compose this shell. Each earth_position_shell may be composed of one or more face. Inherited from shell.


geologic_process (O, I: SET[0:?] geologic_process(position_in_earth_model))

Indicates a geologic process which is positioned by this location. Each earth_position_shell may locate one or more geologic_process. Inherited from position_in_earth_model.


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

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


intersection_role (I, V: SET[0:?] space_time_operation(intersecting_object))

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. Each earth_position_shell may be the intersecting object for one or more space_time_operation. Inherited from topological_object.


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 earth_position_shell may object of ranking one or more object_ranking. Inherited from object_of_interest.


other_composite_spatial_object (I, V: SET[0:?] other_composite_spatial_object(composite_object))

Defines the set of composite spatial objects of which this spatial object is a component. Each earth_position_shell may be a component of one or more other_composite_spatial_object. Inherited from spatial_object.


position_uncertainty_classification (I, V: SET[0:?] position_uncertainty_classification(earth_model_object))

Defines the set of classifications of this position with respect to its degree of uncertainty. Each earth_position_shell may be classified by one or more position_uncertainty_classification. Inherited from earth_model_object.


primary_role (I, V: SET[0:?] space_time_operation(primary_object))

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. Each earth_position_shell may be the primary object for one or more space_time_operation. Inherited from topological_object.


primary_topological_relationship (I, V: SET[0:?] topological_relationship(primary_topological_object))

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. Each earth_position_shell may be primarily involved in one or more topological_relationship. Inherited from topological_object.


pty_geometry_3d_shell (I, V: SET[0:?] pty_geometry_3d_shell(shell))

Each earth_position_shell may have a property of one or more pty_geometry_3d_shell. Inherited from shell.


rock_feature_part (O, I: rock_feature_part(earth_model_object)) (1226)

This points to the rock feature part that this earth model object is representing spatially. Each earth_position_shell may be located by one rock_feature_part. Inherited from earth_model_object.


secondary_topological_relationship (I, V: SET[0:?] topological_relationship(secondary_topological_object))

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. Each earth_position_shell may be involved in one or more topological_relationship. Inherited from topological_object.


shell_region_binding (I, V: SET[0:?] shell_region_binding(shell))

Indicates various usages of this shell to delimit regions. Each earth_position_shell may provide the bounds for one or more shell_region_binding. Inherited from shell.


source_space_time_operation (I, V: BAG[0:1] space_time_operation(resulting_object))

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. Each earth_position_shell may be the result of one space_time_operation. Inherited from topological_object.


synthetic_log_trace (O, I: synthetic_log_trace(position_in_earth_model))

Indicates a synthetic log trace which is positioned in the earth at this location. Each earth_position_shell may locate one synthetic_log_trace. Inherited from position_in_earth_model.


whole (I, V: SET[0:?] earth_position_composite(part))

Indicates various spatial composite locations which utilize this position as a component. Each earth_position_shell may part of one or more earth_position_composite. Inherited from position_in_earth_model.

Local rules:

Uniqueness Constraint
identifier, identifying_whole, seismic_geometry_set, geologic_feature, geoscience_interpretation
[I: earth_position_simple] Same Related Instance
Any instance of EARTH POSITION SIMPLE that is identified by an EARTH POSITION COMPOSITE must be part of that EARTH POSITION COMPOSITE.
[I: earth_position_simple] Optional Relationship Set
Each instance may represent a geologic_feature or be identified by an identifying_whole.
[I: earth_position_simple] Instance Value Constraint
If the instance partially identifies a seismic_geometry_set, then it must also be part of an identifying_whole.
Supertype path(s):
topological_object > spatial_object > simple_spatial_object > shell > earth_position_shell.
e_and_p_data > object_of_interest > technical_object > earth_model_object > position_in_earth_model > earth_position_simple > earth_position_shell.

Entity projects as table EARTH_POS_SHL.

Referenced in Diagrams:

• EMG4: Earth Model Objects (0712, 1226)
• GPI1: Seismic Earth Model Interpretation