Subsurface Explorer

Free Minimalistic Geoscience 3D Viewer

Subsurface Explorer logo over a 3D seismic cube display.

Features

  • 2D seismic sections (SEG-Y files): display
  • 3D seismic cubes (SEG-Y files): display and compute attributes (envelope and similarity)
  • Horizons (ZMAP+ files): create, edit (with auto propagation) and display
  • Faults (custom .fault file): create, edit and display
  • Geobodies (custom .geobody file): create, edit and display
  • Well trajectories (CSV files): display
  • Well logs (LAS files): display (3D and 2D)
    • Cross-plot : generate
  • Cones of uncertainty: display
  • Conversion tools: time-depth (constant velocity) and meters-feet
This picture shows the app displaying a 3D seismic cube from a SEG-Y file.
Time-depth conversion dialog over a 3D seismic cube from the F3 dataset.
Horizon picker showing manual picks along a 2D inline section.
3D scene mixing a seismic cube with a picked horizon surface.
3D scene with well trajectories and well log curves displayed alongside seismic.
3D scene showing a picked fault (red) and geobody (green) within a seismic cube.

Downloads

Important notice: Subsurface Explorer is light in itself, but it might use a lot of your computer resources, depending on the size of the data you give it to create, edit, compute, generate or display. A computer with 16 GB of RAM and a modern dedicated GPU is recommended, at least. Subsurface Explorer is distributed ‘as is,’ without any warranty or liability. If using it causes you to lose anything of value, its developer cannot be held responsible.

PlatformSize (unziped)LinkCompatibility
Linux (portable)1,9 GoDownload for LinuxRequiers a GLIBC version of 2.34 or more (RHEL 9+, Ubuntu 22.04+, Debian 12+, Fedora 35+, …). Tested on Ubuntu 26.04
Windows (portable)653,0 MoDownload for WindowsTested on Windows 11
Python Sources (licence GPL v3)50,3 MoDownload SourcesDeveloped on Ubuntu 26.04

F3 Demo Data (4.49 GB)

Subsurface Explorer is already shipped with lightweight synthetic data to play with. But if you want to try it with a real-scale bloc, you can download this F3 Demo Data package (F3 is a now-decommissioned block in the Dutch part of the North Sea).

Note: The light SEG-Y file comes from dGB Earth Sciences. We thank dGB Earth Sciences for making the data available as an OpendTect project via their TerraNubis portal (terranubis.com). All other files — seismic, well trajectories, and well logs — come from NLOG, the Dutch national oil and gas portal. The NLOG data are provided “as is”. Neither NLOG nor TNO accepts any liability for the accuracy, completeness or fitness for purpose of the data, nor for any consequences arising from their use. The full NLOG disclaimer can be found at nlog.nl/seismische-data. Neither NLOG, TNO nor the Dutch government endorses Subsurface Explorer.

About and Contact

Subsurface Explorer is developed by an AI-assisted (to be honest) solo developer, in their free time. Their goal isn’t to compete with the already established names like Petrel (commercial) or OpendTect (free and open source). Subsurface Explorer is a humble side project, focused on essential functionalities and a clean modern interface.

If you want to request a feature, report a bug or simply say hi, you can use one of the two options below.

Discord

Subsurface Explorer Discord server.

Form

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