A coordinate system axis used to describe locations along a wellbore path in a well, typically to express measured depths. The wellbore path begins at the surface of the Earth, and extends into the Earth. The orientation of the path is positive in the direction that was initially toward the center of the Earth (downward).

ref_quantity_property (M, K, I: ref_quantity_property)

The (quantity) property that is described by the axis. Inherited from coordinate_system_axis.


coordinate_system (K, I, V: BAG[0:1] coordinate_system(coordinate_system_axis))

This describes the coordinate system for which this axis is defined. Each coordinate system axis is defined for use by one and only one coordinate system. Each measured_depth_system_axis may define a part of one coordinate_system. Inherited from coordinate_system_axis.


source (M, I: ref_source)

The provider of this instance of reference information. If this instance is provided by POSC, then this attribute must be "POSC". Each measured_depth_system_axis must provided by one ref_source. Inherited from reference_behavior.


description (O, I: ndt_comment)

A remark about the coordinate system axis. Inherited from coordinate_system_axis.


status (O, I: ndt_instance_status) (0644)

The status of this instance in the version of Epicentre running in a data store. This is an enumerated datatype for which the following are the possible values: current, provisional, deprecated. Current - use without restriction. Provisional - use with caution, this value is for comment and may not appear in future releases of Epicentre. Deprecated - avoid use if possible, it is planned to remove this value in the next major release of Epicentre. Inherited from reference_behavior.


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

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


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

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


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


ref_axis_orientation (O, I: ref_axis_orientation)

The orientation of the axis with respect to previously defined axes in the coordinate system. Each axis is oriented as "right-handed" or "left-handed". Inherited from coordinate_system_axis.


source_reference (O, 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. Each measured_depth_system_axis may documented by one ref_source_reference. Inherited from reference_behavior.


version (O, I: ref_epicentre_version) (0644)

Describes the version of Epicentre when this status was assigned to this instance of reference behavior Each measured_depth_system_axis may version one ref_epicentre_version. Inherited from reference_behavior.


vertical_datum (O: vertical_datum(measured_depth_system_axis))

This is the vertical datum that defines where this axis has a measured depth value of zero. Each measured_depth_system_axis may be measured from one vertical_datum.

Local rules:

Uniqueness Constraint
ref_quantity_property, coordinate_system
Supertype path(s):
e_and_p_data > object_of_interest > technical_object > coordinate_system_axis > measured_depth_system_axis.
reference_behavior > measured_depth_system_axis.

Entity consolidated into table CORD_SYS_AXIS.

Referenced in Diagrams:

• CS2: Vertical Coordinate Axes