Difference between revisions of "Open data"

From SEG Wiki
Jump to: navigation, search
m (Created link to OpendTect website)
m (deleted brackets from around opendtect)
Line 49: Line 49:
  
 
===[[F3 NETHERLANDS]]===
 
===[[F3 NETHERLANDS]]===
This small marine 3D (plus wells) is offshore Netherlands. It is available in [[http://www.opendtect.org/ OpendTect]] format on the dGB Open Seismic Repository under a CC-BY-SA license: [http://www.opendtect.org/osr/Main/NetherlandsOffshoreF3BlockComplete4GB F3 Complete]. It is also available as a seismic-only dataset: [http://www.opendtect.org/osr/Main/NetherlandsOffshoreF3BlockSeismicOnly494MB F3 Seismic Only].  
+
This small marine 3D (plus wells) is offshore Netherlands. It is available in [http://www.opendtect.org/ OpendTect] format on the dGB Open Seismic Repository under a CC-BY-SA license: [http://www.opendtect.org/osr/Main/NetherlandsOffshoreF3BlockComplete4GB F3 Complete]. It is also available as a seismic-only dataset: [http://www.opendtect.org/osr/Main/NetherlandsOffshoreF3BlockSeismicOnly494MB F3 Seismic Only].  
  
 
The data are in OpendTect format, but can easily be exported from that tool into [[SEG-Y format]].
 
The data are in OpendTect format, but can easily be exported from that tool into [[SEG-Y format]].

Revision as of 09:36, 21 March 2013

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

ALASKA 2D LAND LINE 31-81

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.

ALASKA 2D LAND LINE 16-81

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.

Poland 2D Vibroseis LINE 01

2D land vibroseis dataset donated to the public domain by Geofizyka Torun S.A, Poland. SEGY data included geometry in headres and uphole statics in SPS files.

The data was used to create tutorual Freusp and Madagascar RSF

The Line_001 (388.9 Mbytes) Download

2D marine seismic data

US EAST COAST DEEP WATER LINE 32

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.

Mobil Avo Viking Graben Line 12

Mobil Oil Company released this 25 km line to be used at an SEG research workshop on Seismic inversion methods at the Los Angeles convention in 1994. Data includes prestack shot record data and measurement from two wells that intersect the line. It has been widely used to validate AVO and multiple attenuation algorithms.

3D land seismic data

TEAPOT DOME 3D SURVEY

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

NORTH SEA NORNE FIELD

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

F3 NETHERLANDS

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.

PENOBSCOT 3D

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.

BLAKE RIDGE 3D

This small marine 3D is offshore South Carolina, US. It is available in OpendTect format on the dGB Open Seismic Repository under a CC-BY-SA license: Blake Ridge 3D. It is available as PreSTM and PreSDM stacks. Blake Ridge is one of the best studied gas hydrate sites in the world.

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. Information to access data are at gode.

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: [1].

Chevron GOM Full Waveform Inversion Synthetic

2D Elastic isotropic (Vp, Vs, Dn) marine benchmark synthetics, subsalt Gulf of Mexico, with and without free surface multiples. These data were designed to exercise FWI algorithms for complex salt shapes. These data used for the 2012 and 2013 SEG Gulf of Mexico Imaging challenge post convention workshops. more information and download here.

SMAART models

SMAART (Subsalt Multiples Attenuation And Reduction Team) models — Pluto, Sigsbee, and Ziggy — are maintained and licensed by TNO and Delphi. Read more.

3D 9C synthetic VSP data

These data sets were calculated to understand processing challenges caused by laterally-varying anisotropy in the presence of statics. More information is in the wiki entry 3D 9C synthetic VSP data

Data and detailed documentation can be found here

Seismic data from Forel's book

Synthetic gravity and magnetic data

Bishop Model

See also