1994 BP migration from topography

From SEG Wiki
Jump to: navigation, search
Model94
94 bpmodel Optimum.jpg
Optimum stack post migration, produced by Nanxun Dai, courtesy of Mike Hall at GX Technologies in Calgary
Details
Type 2D Synthetic
Format SEG Y
Size 516MB Compressed, 971MB Uncompressed
Owner BP
Geometry Split-spread
Location
Country Canada
Region Foothills of the Canadian Rockies
Open data


This model representing a cross section through the foothills of the Canadian rockies. Courtesy of BP and Joe Dellinger.

Overview

A Canadian overthrust synthetic dataset prepared by Sam Gray and Gary Maclean, using John Etgen's finite-difference code. It was created for the CSEG paper "Migration from topography: improving the near-surface image"[1]. This data was widely circulated among Canadian contractor companies in the mid 1990's.

Data information:

  • Number of shots: 277 shots
  • Number of traces per shot: 480 traces per shot record
  • Geometry: Split-spread
  • Group interval: 15 m
  • Shot interval: 90 m
  • Offsets: -3600 m to 3600 m for all shots except roll-in and roll-out
  • First shot point and first group at location: 1
  • First trace of the velocity model is also at location: 1

How to obtain a copy of the data

The easiest way to obtain a copy of the dataset is to use the links below.

Madagascar processing scripts

Model94 Prestack dept migration comparison

If you have installed the Madagascar development release, you have scripts to download and display the data. You may need to update your copy of the Madagascar installation to ensure you have contents added after March 2015. To update your copy of Madagascar enter this dialog into a terminal window:

cd $RSFSRC/book/data
svn update

To run the processing scripts enter this dialog into a terminal window:

cd bpmodel94/fetch
scons view

Download data clicking links or command line wget

Either click on the hypertext links, or paste the wget commands into a unix terminal window:
wget http://s3.amazonaws.com/open.source.geoscience/open_data/bpmodel94/README.txt
wget http://s3.amazonaws.com/open.source.geoscience/open_data/bpmodel94/README_Modification
wget http://s3.amazonaws.com/open.source.geoscience/open_data/bpmodel94/optimum.jpg
wget http://s3.amazonaws.com/open.source.geoscience/open_data/bpmodel94/Model94_shots.segy.gz
wget http://s3.amazonaws.com/open.source.geoscience/open_data/bpmodel94/velocity.segy.gz

Terms of use

IF YOU MODIFY THIS DATASET IN ANY WAY YOU MUST DOCUMENT THAT YOUR DATASET HAS BEEN MODIFIED FROM THE ORIGINAL AND HOW IT DIFFERS FROM THE ORIGINAL.
If you use this dataset in a presentation or publication, you must acknowledge that it is courtesy of Amoco and BP, and reference the paper by Gray and Marfurt listed below.
By using this data, you agree to the following disclaimer:
THE SEG IS HELPING TO DISTRIBUTE THIS DATASET, BUT IS NOT LEGALLY LIABLE IN ANY WAY BECAUSE OF THAT ASSISTANCE.
NO WARRANTIES: YOU ACCEPT ALL THE MATERIALS PROVIDED "AS IS". YOU ASSUME ALL RESPONSIBILITY FOR THE RESULTS OR USE OF THE MATERIALS. BP MAKES NO REPRESENTATIONS OR WARRANTIES OF ANY KIND INCLUDING, BUT NOT LIMITED TO, THE ACCURACY, RELIABILITY, OR USABILITY OF THESE MATERIALS. ANY USE WHICH YOU MAKE OF THE MATERIALS IS AT YOUR OWN RISK.
DISCLAIMER: BP PROVIDES NO WARRANTIES TO YOU, EXPRESSED, IMPLIED OR STATUTORY, INCLUDING ANY IMPLIED WARRANTIES OF FITNESS FOR A PARTICULAR PURPOSE.
DAMAGE WAIVER: IN NO EVENT WILL BP BE LIABLE FOR ANY DAMAGES, INCLUDING DIRECT, INDIRECT, SPECIAL, INCIDENTAL OR CONSEQUENTIAL DAMAGES, ARISING OUT OF ANYONE'S USE OF OR INABILITY TO USE THESE MATERIALS, OR ANY COPIES PREPARED FROM THESE MATERIALS, EVEN IF BP HAS BEEN ADVISED AS TO THE POSSIBILITY OF SUCH DAMAGES.
REDISTRIBUTION: YOU AGREE THAT IF YOU SHARE ANY OR ALL OF THESE DATA WITH ANY OTHER PERSON OR ORGANIZATION, YOU WILL ALSO INCLUDE ALL OF THE ASSOCIATED DOCUMENTATION ORIGINALLY INCLUDED WITH THE DATA AND PROVIDED TO YOU, INCLUDING THIS NOTICE, AND THAT THE RECEIVING PARTY ALSO AGREES TO ABIDE BY THESE TERMS AS A CONDITION OF ITS USE. IF THE DATA THAT YOU PASS ON HAS BEEN MODIFIED IN ANY WAY FROM ITS ORIGINALLY DISTRIBUTED STATE, THE MODIFICATION MUST BE DOCUMENTED, AND THAT DOCUMENTATION INCLUDED ALONG WITH THE DATA.

References

  1. Gray, S. H.; Marfurt, Kurt J. (1995). "Migration from topography: Improving the near-surface image". Can. J. Expl. Geophys. 31 (1/2): 18–24.PDF version

External links