Export well logs to Excel

Excel workbooks (.xlsx) are a convenient tabular format for reviewing and sharing well log data outside g-Space. This topic covers exporting the log (LAS) curves of one or more wells to Excel; g-Space writes the workbooks but does not read logs back from .xlsx.

Purpose

Write the depth-indexed log curves of a well to an Excel workbook. Each exported file contains a header block with the LAS parameters (start, stop, step and null value) and well identification, followed by a curve-name row, a units row and the sampled curve values. Export can run for a single well or for all wells, with a per-curve selection.

Launching the export

In the Data manager, right-click a well (or the Wells root node to export every well) and open the Export submenu, then choose LAS → Excel format (*.xlsx).

[image: placeholder_Data_manager_well_context_menu_Export_>_.png]

Step-by-step

In the LAS Export Setup dialog, tick the header fields to include (Well Name, UWI, MD).
Under Log Curves, expand each well and tick the curves to export. Use Select All or Deselect All to toggle everything at once.
Press OK to confirm the selection.
When prompted with Set directory for output xlsx files, choose the output folder.
g-Space writes one workbook per LAS file per well into that folder, named from the well UWI and the LAS file name.

[image: placeholder_LAS_Export_Setup_dialog_with_the_field_t.png]

Workbook layout

Each .xlsx file is written on a single sheet with, from top to bottom:

A header block of well parameters: STRT, STOP, STEP, NULL, COMP, WELL, UWI and APIN with values and descriptions.
A blank separator row, then a row of curve names and a row of curve units.
The sampled curve values, one column per curve.

Notes

Only the checked curves are written; the depth/index curve is always kept as the first column.
Exporting from the Wells root processes all wells; exporting from a single well processes just that well. Each LAS file of a well produces its own workbook.
Excel export requires a Seismic Interpretation or Geological Interpretation license; otherwise the action reports that the feature is not available.
Export is one-way: g-Space does not import well logs from Excel.