WITSML (Wellsite Information Transfer Standard Markup Language) is an XML-based industry standard for exchanging well data. g-Space imports WITSML .xml files through a dedicated wizard. This topic covers importing WITSML into a g-Space project.

Purpose

Load well data from WITSML documents into the project's Wells folder. A single WITSML file can carry several kinds of object, and the wizard imports them together:

• Wells and wellbores - the well hierarchy and its bores.
• Well headers - identifying and location information such as API number, country, operator, coordinate reference system, depth datum and surface location.
• Logs and curves - log curves with their mnemonics, units and sample values.
• Deviation / trajectory - trajectory stations with measured depth, TVD, inclination, azimuth and location.
• Formation markers - marker names with depth (MD / TVD) and geological attributes.

Import only - g-Space does not write WITSML. The supported WITSML version is 1.4.1.1.

Launching the import

Open the Import WITSML files wizard from the well import commands. The wizard opens on a page with a file table and Add and Remove buttons.

[image: placeholder_The_Import_WITSML_files_wizard_with_the_.png]

Step-by-step

1. Press Add and, in the Open WITSML files dialog, select one or more WITSML .xml files.
2. Each file is parsed and listed in the table. Review the per-file columns: File, Version, Wells, Logs, Curves, Markers, Warnings and Errors.
3. Use Remove to drop any file you selected by mistake. Selected files are imported as wells and log curves under the Wells folder.
4. Finish the wizard to import. If no wells were recognised, g-Space warns before continuing.
5. Review the WITSML Import Report that opens after import.

[image: placeholder_The_wizard_file_table_showing_parsed_fil.png]

The import report

The WITSML Import Report summarises what was loaded. A header line shows the source, version and totals, and the tree below groups the results into Imported wells, Imported curves, Imported trajectories, Imported formation markers, Warnings and Errors. Use Export to text... to save the report to a file.

Notes

• The importer supports WITSML version 1.4.1.1. Files that declare a different version are reported as an error and are not imported.
• WITSML import is read-only; there is no export back to WITSML.
• Warnings (for example, missing CRS, missing depth datum, curves without units, or stations lacking usable data) do not stop the import - check the report to see which objects were skipped.

See Also

Import wells | Well Data Formats | Import PRODML