PILOT HOLE OPENING
A class with identifier
|<PILOT HOLE OPENING> is the <Activity> of to drill with the objective of enlarging a pilot hole by rotating a larger drill bit or a hole opener
|Includes opening of side tracks if the purpose are to reach a new geological or reservoir objective. As defined by the Norwegian Oil Directorate in the "user guide for the Common Daily drilling Report System (CDRS) Report number OD-95-30"
|Activity or Event