POSC Specifications: Epicentre Version 3.0 | Logical Data Model |
These are several changes to simplify and improve the description of points and intervals within a wellbore.
CHANGE ESM_wellbore_point_and_interval_ ALTER ENTITY wellbore_point; INVERSE ADD pty_wellbore_point_orientation : SET[0:?] OF pty_wellbore_point_orientation FOR wellbore_point (*<desc> This describes the orientation of the wellbore itself at this point in the wellbore. This orientation is expressed relative to vertical and north.*) (*<verb>have a property of*); END_ENTITY; ADD ENTITY pty_wellbore_point_orientation (*<desc> This describes the orientation of the wellbore at a wellbore point. This orientation is expressed relative to vertical and north.*) SUBTYPE OF (property); azimuth : OPTIONAL ndt_plane_angle (*<desc> This is the azimuth of the wellbore at this point. This azimuth is measured in the horizontal plane from north. When provided, the attribute ref north axis direction defines the type of north used.*); ref_north_axis_direction : OPTIONAL ref_north_axis_direction (*<desc> This describes the type of north used for the azimuth. Possible values include true north, magnetic north, and local grid north.*); inclination_from_vertical : OPTIONAL ndt_plane_angle (*<desc> This describes the inclination of the wellbore from vertical at this point in the wellbore.*); wellbore_point : OPTIONAL wellbore_point (*<desc> This describes the point in the wellbore at which this orientation is measured.*) (*<verb>be a property of*); UNIQUE si: wellbore_point, activity; END_ENTITY; ALTER ENTITY wellbore_pick; INVERSE ADD pty_geologic_feature_orientation : SET[0:?] OF pty_geologic_feature_orientation FOR wellbore_pick (*<desc> This describes the orientation of a geologic feature intersected by this wellbore. This orientation is described with respect to vertical and north, not relative to the axis of the wellbore.*) (*<verb>have a property of*); END_ENTITY; ADD ENTITY pty_geologic_feature_orientation (*<desc> This describes the orientation of a geologic feature intersected by this wellbore. This orientation is described with respect to vertical and north, not relative to the axis of the wellbore. The geologic feature is defined by the wellbore pick.*) SUBTYPE OF (property); azimuth : OPTIONAL ndt_plane_angle (*<desc> This is the azimuth of a geologic at this pick in this wellbore . This azimuth is measured in the horizontal plane from north. When provided, the attribute ref north axis direction defines the type of north used.*); ref_north_axis_direction : OPTIONAL ref_north_axis_direction (*<desc> This describes the type of north used for the azimuth. Possible values include true north, magnetic north, and local grid north.*); inclination_from_horizontal : OPTIONAL ndt_plane_angle (*<desc> This describes the inclination of the geologic feature at this pick where it is intersected by this wellbore.*); wellbore_pick : OPTIONAL wellbore_pick (*<desc> This is the wellbore pick that is the intersection of the geologic feature and the wellbore. Both the wellbore and the geologic feature are defined by this pick.*) (*<verb>be a property of*); UNIQUE si: wellbore_pick, activity; END_ENTITY; ALTER ENTITY wellbore_interval (*<DESC>An interesting named interval in a wellbore.*); ADD closure_azimuth : OPTIONAL ndt_plane_angle (*<desc> This is the difference in angle of azimuth between one end of the interval and the other.*); ADD closure_distance : OPTIONAL ndt_length (*<desc> This is the linear distance from one end of the interval to the other. If the wellbore is not straight, this distance will be less than the along-hole length of the interval.*); END_ENTITY; END_CHANGE;