Before you start - geodetic rules

Before you create or load a solution, the geospatial consistency of your data needs to be considered, as it has many safety and economic impacts on your project. Upon creating a new solution, you have to choose between working in GIGS-compliant Mode, which asks you to set a Coordinate Reference System (CRS), or Sandbox Mode, which is geodetically unaware. When opening an existing solution, a check is performed and if no CRS is detected, you are prompted to assign a CRS before you can continue. For more information, see Set solution CRS and Display Units.

Important   Once you have chosen Sandbox Mode for your solution, you will not be able to assign a CRS.

Before you create or open a solution, consider the following geodetic rules and limitations:

Solution has CRS: The import data includes CRS metadata: Export of geospatial data is possible:
YES YES
  • CRS of the data set needs to be identical to CRS of the solution, else import is prevented.
  • You can import data of specific file formats that has different coordinate units than the solution CRS units.
  • If the well data has a CRS that differs from the solution CRS, then import is blocked.
 YES
  • The export data set contains the solution CRS metadata.
YES

NO

  • You have the option to confirm that the data coordinates belong to the solution CRS.
  • For the WITSML inbound connector this is possible, but only if the WITSML well data has a position defined (Easting/Northing). In this case, use the Use solution CRS button on the WITSML Inbound form.

YES

  • The export data set contains the solution CRS metadata.
NO (solution in Sandbox Mode)

YES

  • CRS of imported data set is ignored.

YES

  • The export data set contains no CRS information.
NO (solution in Sandbox Mode)

NO

  • All geospatial data can be imported.

YES

  • The export data set contains no CRS information.

 

In GIGS-compliant Mode, the application...

  • Asks you to set the solution CRS as soon as you open a new solution or a legacy one that doesn't have a CRS.
  • Switches the distance display unit to the horizontal unit of the solution CRS immediately after the solution CRS is set (you can switch it later to another unit whenever you require).
  • Doesn't allow you to change the solution CRS once any geospatial data has been loaded to the solution.
  • Applies the above rules to the drag and drop of data between solutions (only allowed between instances of the application that have the same version).
  • The file importers on the OpenWorks, Geographix and IHS import workflows (data > Connectors > Well Data File Importers) prompt you to select a coordinate transformation if the data CRS and the solution CRS don't have the same underlying geographic CRS.

In Sandbox Mode, the application...

  • Doesn't allow you to switch to GIGS-compliant Mode once Sandbox Mode has been selected.
  • Allows you to drag and drop geospatial data only to other solutions that are using Sandbox Mode (only allowed between instances of the application that have the same version).
  • Never asks or obliges you to set the solution CRS, never prompts you to select a transformation of coordinates and never automatically switches a display unit.