> ## Documentation Index
> Fetch the complete documentation index at: https://docs.quickscout.io/llms.txt
> Use this file to discover all available pages before exploring further.

# Well logs

> Upload LAS files and scans, pick tops and intervals, discuss a log, and build cross sections.

## Upload logs

Open **Uploads** in the rail, or **+** → **Upload logs**. Drag files onto the drop zone.

* **Accepted**: LAS 2.0 and 3.0, and raster scans (TIFF, PNG, PDF), up to 200 MB each.
* Filter the list by **Needs attention**, **Needs review**, **Processing** or **Failed**.
* **Retry failed** tries failed files again. **Clear done** tidies the list.

## Analyze a log

Open **Well Logs** → **Log Analysis** and **Choose a log**.

* Use the depth controls to **Pick tops** or **Pick interval**, or **Add top** / **Add interval** by typing depths.
* Drag on the log strip to focus a depth interval, then **Analyze**.
* **Discuss** is a chat about the log. Ask *What can I ask?* to get started. **Past discussions** keeps earlier chats. Chats use [credits](/enterprise/credits).
* **Report** creates a printable summary of the log.

## Cross sections

Open **Well Logs** → **Cross Sections** and click **Add logs**. You need two or more.

* Tools: **Cursor** (<kbd>C</kbd>), **Zoom** (<kbd>Z</kbd>), **Top pick** (<kbd>T</kbd>), **Interval** (<kbd>I</kbd>).
* **Section type**: **Structural** or **Strat**.
* Right-click a top to **Flatten on this**.
* Display options: **Fill formations**, **Intervals**, **Data points**.
* **Save section** keeps it. **New section** starts another.

## Formation tops

**Well Logs** → **Formation Tops** is your formation dictionary. Edits here apply to every well. **Browse defaults** shows the standard list, and **New top** adds your own.