12.22.1 WellboreMarker
| Topic Version | 1 | Published | 11/11/2016 | ||
| For Standard | WITSML v2.0 | ||||
| Type: | Class | Stereotype: | «XSDcomplexType» | ||
Used to capture information about a geologic formation that was encountered in a wellbore. This object is uniquely identified within the context of one wellbore object.
|
Name |
Type |
Notes |
|---|---|---|
|
ChronostratigraphicTop |
GeochronologicalUnit |
The name of a geochronology for this marker, with the "kind" attribute specifying the geochronological time span. |
|
DipAngle |
PlaneAngleMeasure |
Angle of dip with respect to horizontal. |
|
DipDirection |
PlaneAngleMeasure |
Interpreted downdip direction. |
|
LithostratigraphicTop |
LithostratigraphicUnit |
Specifies the unit of lithostratigraphy. |
|
Md |
MeasuredDepthCoord |
Logged measured depth at the top of marker. |
|
Tvd |
WellVerticalDepthCoord |
Logged true vertical depth at top of marker. |
|
Association |
Notes |
|---|---|
|
From: WellboreMarker. To: AbstractObject Generalization |
|
|
From: WellboreMarker.Wellbore 0..1To: Wellbore Association |
|
|
From: WellboreMarker.Trajectory 0..1To: Trajectory Association |
Reference to the directional survey used to convert the marker's MD to TVD. Even though the field is optional, it should be thought of as mandatory for any marker with a TVD (because one would have been used to make the conversion). Because this information is often lost or the survey is unavailable in the context of a data transfer the field is left as optional. |
|
From: WellboreMarker. To: LithostratigraphicUnit Dependency |
|
|
From: WellboreMarker. To: GeochronologicalUnit Dependency |
|
|
From: WellboreMarkerSet.FormationMarker 0..*To: WellboreMarker Association |