EPSG
IOGP
2019-02-16
Wellbore survey.
Example only. Often called Zero Depth Point (ZDP) or wellbore reference elevation point, the point of 0 offset and lowest vertical constraint in a wellbore survey.
Definition: JSON
{ "$schema": "https://proj.org/schemas/v0.7/projjson.schema.json", "type": "VerticalReferenceFrame", "name": "EPSG example wellbore vertical datum", "scope": "Wellbore survey.", "area": "Description of the extent of the CRS.", "bbox": { "south_latitude": -90, "west_longitude": -180, "north_latitude": 90, "east_longitude": 180 }, "id": { "authority": "EPSG", "code": 1205 } }