Segy Reader For Mac

Software allows conversion of segy file trace header coordinates from one datum to another datum and/or from one UTM zone to another one. Over 200 datums and seven different projections supported. Datum conversion for coordinates in ascii files. module enabling writing of coordinates to trace headers in 2D and 3D segy files. It accepts as input ascii navigation files with geodetic (rectangular) coordinates, performs necessary interpolation and extrapolation and writes resulting coordinates to segy trace headers. Software also provide segy header viewer and editor. Text,binary and trace headers can be viewed and edited. Reports of selected trace header values can be generated and saved to ascii file. Concatenation and spliting of segy files, zeroing of noisy samples and traces, padding missing traces in 3D segy files. Reformating of header values. Addition of numbers and multiplication by specified factor of existing headers. Graphical display of header values. Software can provide very valuable help in segy data loading and editing.
  1. Free Segy Viewer
  2. Segy Reader For Mac Computers

Between 2 and 3 years ago I started turning my long time passion for image processing, and particularly morphological image processing, to the task of fault segmentation.

At the time I shared my preliminary code, of which I was very happy, in a Jupyter notebook, which you can run interactively at this GitHub repository.

SEGD Viewer is a software tool that can be used in order to open and view seismic data in a SEGD format, and save the retrieved information to your hard drive in picture formats. Seismic Trace Viewer (STV) for SEGY seismic data file STV (a free Seismic Trace Viewer for SEGY files) is a open source pure java visualization program to quickly view SEGY format seismic data. Downloads: 10 This Week Last Update: 2021-01-25 See Project. The table below outlines how SEG-Y is supported by our different FME products, and on which platform(s) the reader and/or writer runs.

Two areas need improvement to get that initial workflow closer to a production one. The first one is on the image processing and morphology side; I am thinking of including: a better way to clean-up very short faults; pruning to eliminate spurious segments in the skeletonization result; the von Mises distribution instead of standard distribution to filter low dip angles. I know how to improve all those aspects, and have some code snippets sitting around in various locations on my Mac, but I am not quite ready to push for it.

The second area, on the seismic side, is ability to work with 3D data. This has been a sore spot for some time.

Enter segyio, a fast, open-source library, developed precisely to work with SEGY files. To be fair, segyio has been around for some time, as I very well know from being a member of the Software Underground community (swung), but it was only a month or so ago that I started tinkering with it.

This post is mostly to share back with the community what I’ve learned in my very first playground session (with some very helpful tips from Jørgen Kvalsvik, a fellow member of swung, and one of the creators of segyio), which allowed me to create a 3D fault segmentation volume (and have lots of fun in the process) from a similarity (or discontinuity) volume.

Segy

The workflow, which you can run interactively at this segyio-notebooks GitHub repository (look for the 01 – Basic tutorial) is summarized pictorially in Figure 1, and comprises the steps below:

  • use segy-io to import two seismic volumes in SEGY file format from the F3 dataset, offshore Netherlands, licensed CC-BY-SA: a similarity volume, and an amplitude volume (with dip steered median filter smoothing applied)
  • manipulate the similarity to create a discontinuity/fault volume
  • create a fault mask and display a couple of amplitude time slices with superimposed faults
  • write the fault volume to SEGY file using segy-io, re-using the headers from the input file

Free Segy Viewer

Figure 1. Naive 3D seismic fault segmentation workflow in Python.

Get the notebooks on GitHub (look for the 01 – Basic tutorial)

Segy reader for mac download

Feedback is welcome.

Segy Reader For Mac Computers

DISCLAIMER: The steps outlined in the tutorial are not intended as a production-quality fault segmentation workflow. They work reasonably well on the small, clean similarity volume, artfully selected for the occasion, but it is just a simple example.