Open data

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Dictionary entry for Open data (edit)


Open datasets are explicitly and clearly licensed for use by anyone without permission from the rights holder. The purpose may or may not be restricted by the terms of the license — common exclusions are 'attribution' and 'non-commercial', though some people do not consider 'non-commercial' restricted data to be open sensu stricto. Public domain datasets are unrestricted in use or range, and have no license.


Introduction to the SEG Open Data Gateway

There is geophysical data you can download from the internet or request to be shipped to you. This page documents data that is readily available. Key parts of the data documentation are:

  • a descriptive overview of the data including types of data available
  • terms of use
  • how to obtain a copy of the data
  • how to obtain other support data
  • links to publications

2D land seismic data


2D land data from the National Petroleum reserve Alaska. This is a short line with small statics. There is ground roll and noise bursts, but there is also good signal. Data includes unprocessed prestack data, final stack, and images of previous stack. Scripts for processing with Seismic Unix are available. This is a good line to start experimenting with open data and Seismic Unix (su) because there is a full processing sequence including data download, reformat, header loading, gain, prestack fk filter, brute velocity estimation, brute stack, residual statics, final velocity analysis, final stack, and two types of post stack migration (phase shift and Kirchhoff). In comes with executables for su release 43R1 on Linux, which is handy if su is not installed on your system. This data is provided by USGS.


2D land data from the National Petroleum reserve Alaska. This line intersects 31-81 and the processing sequence is the same as used for 31-81. Seismic Unix scripts and a poster are available. The ground roll is weaker and there are fewer noise bursts. There is a larger statics problem and more structure between 1 and 2 seconds than on line 31-81. This data is provided by USGS.

2D marine seismic data


This 242 km line is collected from a water depth of over 5 seconds to less than .3 seconds. There are strong multiples, diffractors, and a bottom simulating reflector related the the gas hydrate. This data is provided by USGS.

3D land seismic data


A land 3D data set from Wyoming. Post stack data, well logs, production history, and GIS data can be downloaded from the internet after obtaining an FTP password. Unprocessed prestack data available by mail. This data is provided by RMOTC and the U.S. Department of Energy.

3D marine seismic data


These two datasets are provided by Statoil and its partners ENI and Petoro, and hosted by the NTNU. It consists of:

  • Reservoir simulation model in Eclipse.
  • All wells in the E-Segment including well logs.
  • Oil rates, water rates and gas rates are available for each well.
  • Production data for each well up to 2004 are given for history matching purpose.
  • 4D seismic data in 2001 is used as base case and two monitors in 2003 and 2004 - (full, mid, near and far offset seismic data in inline and crossline sections).
  • Interpreted horizons such as oil-water contacts for 2001, 2003 and 2004 and faults.

The first dataset spans the 1997-2004 period and covers the E segment of the Norne Field, while the second dataset spans the 1997-2006 period and contains data for the whole Norne Field.

License terms, which are basically by-attribution, non-commercial, can be found on the NTNU website


Read the SEG Foundation News about the launch of IQ Earth: [1]


This small marine 3D (plus wells) is offshore Netherlands. It is available in OpendTect format on the dGB Open Seismic Repository under a CC-BY-SA license: F3 Complete. It is also available as a seismic-only dataset: F3 Seismic Only.

The data are in OpendTect format, but can easily be exported from that tool into SEG-Y format.


This small marine 3D (plus wells) is offshore Nova Scotia, Canada. It is available in OpendTect format on the dGB Open Seismic Repository under a CC-BY-SA license: Penobscot 3D. It is also available as a pre-stack seismic dataset from the same page (101 GB of data!).

The data are in OpendTect format, but can easily be exported from that tool into SEG-Y format.

Gravity data

This is a satellite acquired data, curated by UCSD and publicly available at UCSD website.

There is also the GOCE data and recently there was the launch of the Cryosat, both by the European Space Agency.

Synthetic seimic data


SEG Salt Model 1996

This model was built by the SEG research committee, and created as part of the Advanced Computational Technology Initiative, in partnership with US national labs. The bulk of the computation was done at Sandia and Los Alamos labs. The full datatset was not retained, but a variety of subsets are available:

  • SEG C3 Narrow Azimuth Subset
  • SEG Wide Azimuth Subset
  • SEG 45 Shot Subset

Contact Chuck Mosher for more information, Chuck Mosher.

Link: salt C3.

BP velocity estimation benchmark model

Links to the data set pages are at: [2].

Seismic data from Forel's book

Synthetic gravity and magnetic data

Bishop Model

See also