Import Logs

"Logs" are depth-indexed curve data (gamma ray, resistivity, and similar LWD/MWD curves) plotted alongside the trajectory in the GeoSteering cross-section. A log file can contain multiple curves at once, imported together.

Prerequisite: a well needs a trajectory already imported before you can import logs — logs are indexed against that trajectory. If you haven't imported survey data yet, do that first.

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Where to Import Logs

1. Open a project and go to the GeoSteering tab.

2. In the left data/objects panel, expand your well's node, then its Logs node.

• Add a new log: click the + (create) button on the Logs node.

• Update or replace an existing log: click the ⋯ menu on that log and choose Edit to re-import it.

• Other actions on an existing log's ⋯ menu: Delete, and Add to track (adds that curve to a display track in the GeoSteering plot — a separate step from importing).

The import wizard has three steps: Import Log → Review Mapping → Confirm Import.

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Step 1 — Import Log (choose your source)

Accepted uploaded formats include LAS and spreadsheet files (CSV/XLSX); multi-sheet Excel files get a sheet picker in the next step.

Click Continue to move to mapping.

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Step 2 — Review Mapping

Same mechanics as any import in GeoMaster, but note what's not here for logs — there's no Grid Convergence, Magnetic Declination, or Tie-In section; those are survey-only.

1. File info — LAS "Well Info" box, or an Excel Sheet dropdown.

2. Row summary — total rows parsed, accepted vs. rejected.

3. Warnings (if any), colour-coded by severity.

4. Column mapping table — one row per curve/column in your file:

Since a single file can carry several curves, you'll typically map multiple rows here — one per curve — and can ignore any you don't want imported.

1. Import Mode — radio options describing how the new curve data combines with anything already stored for this log. Options and detail text are fetched per well; any option that overwrites existing data carries a red Removes data badge.

Click Continue to run a dry-run and move to confirmation.

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Step 3 — Confirm Import

• No Title field — logs don't get a name here (unlike survey imports); each curve keeps its mapped mnemonic/name.

• Errors / warnings recap.

• Mode recap, per curve — for every curve in the file, a before → after row-count comparison with Added, Updated, Removed, and Unchanged counts, so you can see exactly what each individual curve will change before committing.

• Data preview table — read-only grid of the rows that will be imported, in their final units.

Click Import to commit. A "Import completed." toast confirms success, and the new/updated curves appear under the well's Logs node — and in the GeoSteering plot once added to a track.

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After Importing — Adding a Log to the Plot

Importing a log makes its data available, but it won't appear in the GeoSteering cross-section until you add it to a display track:

1. Click the ⋯ menu on the log (under the well's Logs node).

2. Click Add to track.

1. Now choose in where to display the log on.