Entity measured_depth_system_axis

• 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).

Attribute                                 Flags   Data Type

From coordinate_system_axis:
   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                            I       ndt_comment

                                          A remark about the coordinate system axis. 

   ref_axis_orientation                   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".

   ref_quantity_property                  MI      ref_quantity_property

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

   coordinate_system                      IV      bag[0 .. 1] of (coordinate_system)

                                          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. 


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". 


vertical_datum                                    vertical_datum

                                          This is the vertical datum that defines where
                                          this axis has a measured depth value of zero.

End of entity measured_depth_system_axis

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