*===========================================================================================================
* The Norwegian Petroleum Directorate's Fact-Pages. Description of download file.
*===========================================================================================================
* CONTENTS: Exploration wellbore. Fact-page TOPs.
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* CSV SPECIFICATIONS:
*-----------------------------------------------------------------------------------------------------------
* - column delimiter  : ,
* - text qualifier    : "
* - decimal separator : .
* - date format       : dd.mm.yyyy
*-----------------------------------------------------------------------------------------------------------
* COLUMN SPECIFICATIONS:
*-----------------------------------------------------------------------------------------------------------
* column name                    datatype       description
* .............................. .............. ............................................................
* wellbore_name                  varchar(60)    Official wellbore name.
*
* lithostratigraphic_unit        varchar(40)    Lithostratigraphic unit.
*
* level                          int            Level of lithostratigraphic unit.
*                                               Level 2 will normally be "lithostratigraphic group" or equivalent.
*                                               Level 3 will normally be "lithostratigraphic formation".
*                                               Level 4 will normally be "lithostratigraphic member".
*
* top_depth                      int            Measured length along the wellbore from kelly bushing 
*                                               to start of lithostratigraphic unit.
*                                               Always the formation the bit goes into. Note that in some
*                                               situations, for example highly deviated wells, faults, drilling  
*                                               beyond salt walls, this might not be a true stratigraphic top.
*                                               The start of a unit will be its stratigraphic base when drilled 
*                                               from underneath. In case of intercalating formations several top
*                                               depths may occur for the same formation designating the 
*                                               top depths of the sub-packages.
*                                               Unit of measure: m
*
* bottom_depth                   int            Measured length along the wellbore from kelly bushing 
*                                               to end of lithostratigraphic unit.
*                                               Always the formation the bit goes into. Note that in some
*                                               situations, for example highly deviated wells, faults, drilling  
*                                               beyond salt walls, this might not be a true stratigraphic top.
*                                               The end of a unit will be its stratigraphic top when drilled 
*                                               from underneath. In case of intercalating formations several 
*                                               bottom depths may occur for the same formation designating 
*                                               the bottom depths of the sub-packages.
*                                               The end of the lowest lithostratigraphic unit equals TD 
*                                               (total final depth) for the well.
*                                               Unit of measure: m
*
* date_generated                 date           The date the download file was generated from the NPD's
*                                               databases.
*
* NPDID_wellbore                 int            NPD's unique wellbore id.
*
*-----------------------------------------------------------------------------------------------------------
* HISTORY:
*-----------------------------------------------------------------------------------------------------------
* date       changed by      description
* .......... ........... ...................................................................................
* 14.01.2009 ON,AW,TBR/NPD   Initial version
* 13.04.2010 ON,AW/NPD       Level 4 will normally be "lithostratigraphic member".
*
* dd.mm.yyyy nnn/ccc         description of changes
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