Seismic field data

SEG-D viewer

Field records, checked before conversion.

g-Viewer opens SEG-D field data next to your SEG-Y — header tables, channel sets, suspicious-record QC, SP-Line and location maps, then conversion to SEG-Y. Desktop software for Windows, Linux and macOS on Apple Silicon, with a 30-day full trial and a free version renewed annually.

Download free Supported revisions QC & export

Rev 0–3

Incl. 2.1

8058

Save as SEG-D

3 OS

Windows · Linux · macOS

g-Viewer SEG-D mode: a SEG-D revision 2 record (format 8058, 48 traces) with its File info, Input file list, Channel sets, Header name and Headers table panels, a seismic display of the current record and the Location Map

The g-Viewer data panel with a trace header table listing fields and byte positions, next to a shot-gather display

In view

SEG-D record QC: headers, channel sets, record display

g-Viewer is a SEG-D viewer as well as a SEG-Y viewer. It reads SEG-D Revisions 0, 1, 2, 2.1 and 3, including Sercel, INOVA, SmartSolo, Fairfield and Geospace variants, and runs on Windows, Linux and macOS on Apple Silicon. Field crews can QC records as they arrive from continuous shooting and convert the good ones to SEG-Y; processing teams can check what came in from the field before loading it. For SEG-Y itself, see the SEG-Y viewer; for well logs, the LAS viewer.

Supported SEG-D

SEG-D revisions 0 to 3, and the recorder variants.

Open SEG-D files (.sgd, .segd, .sd, .hd) or whole directories. The revision is detected from the file and can be overridden in the Seg-D version setting. Reference: g-Viewer formats.

SEG-D revisions

Including recorder variants

Revision 0Revision 1Rev. 1 SercelRev. 1 SmartSoloRevision 2Rev. 2 INOVARev. 2.1 SmartSoloRevision 3Rev. 3 INOVA

Receiver-gather formats

Fairfield v1.6GeospaceGeospace rev. C

File info at a glance

For the current record set

Record

FFID, Line-SP, revision, data format, date.

Sampling

Sample interval, trace length, total traces, channel sets.

Source

Manufacturer code, source X / Y.

Settings

Apply the MP descale factor (on by default); convert WGS84 source and receiver coordinates to UTM; read additional header fields.

QC & export

From the recorder to SEG-Y.

Read the headers, check the records in the QC views, exclude the bad ones and write out what you keep. Step by step in the manual: SEG-D data QC and conversion.

Load

Files, folders, live sync

Add single files or a whole directory as one record set. Sync folder adds new records during continuous shooting once each file stops growing.

Inspect

Headers and channel sets

Pick General, extended or trace headers to see their values in the Headers table, and every channel set's parameters for the current record.

Suspicious records

Records with bad or corrupted headers are listed apart; exclude them from conversion and export, or include them again. SP-Line map, location map and a display of the current record.

Export

SEG-Y, SEG-D, CSV

Convert to SEG-Y; save as SEG-D format 8058 (revision 3 stays revision 3, others become revision 2); write a time-stamp CSV; save a SEG-Y file as SEG-D.

Free & licensed

Start free. Add the SEG-D licence when you need it.

Free version

Free licence, renewed annually

Opens

SEG-D files, as well as SEG-Y.

Limits

Only the first file in each list can be viewed; no projects; an advertisement is shown.

Unavailable

Add directory, Read headers all, Save Seg-D and the time-stamp file.

SEG-D licence

One licence per file type

Keys

SEG-Y, SEG-D and LAS each have their own licence key.

Unlocks

The full SEG-D feature set: whole directories, all headers, Save Seg-D, the time-stamp file and projects.

Trial

Every download starts with 30 days of full functionality, SEG-D and LAS included.

Pricing

$300 per year, or $500 per year for SEG-Y, SEG-D and LAS together — see g-Viewer pricing.

Platforms

Windows, Linux and macOS.

The same SEG-D viewer on all three desktop systems, kept current by auto-update: g-Viewer checks for a newer version daily at start-up, and Help → Check for updates asks on demand.

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Windows

Windows 11 and higher, 64-bit.

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Linux

RHEL 8 to 10.

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macOS

macOS 26 and higher on Apple Silicon (ARM).

More g-Viewer capabilities

What else g-Viewer does.

SEG-Y viewer overview LAS viewer Seismic data view 3D view Multiple datasets Pre-stack QC Location map

FAQ

Questions, answered.

What is the g-Viewer SEG-D viewer?

g-Viewer is Geomage's desktop viewer for seismic data. Besides SEG-Y it opens SEG-D field records: it reads their headers and channel sets, flags suspicious records, shows them on SP-Line and location maps and converts them to SEG-Y. It runs on Windows, Linux and macOS on Apple Silicon, and a free version is available, renewed annually.

Which SEG-D revisions does g-Viewer read?

SEG-D Revision 0, Revision 1 (including the Sercel and SmartSolo variants), Revision 2 (including INOVA), Revision 2.1 (SmartSolo) and Revision 3 (including INOVA), plus three receiver-gather formats: Fairfield v1.6, Geospace and Geospace rev. C. The revision is detected from the file. Revision 3 is handled as a single setting, without a separate 3.0 and 3.1.

Which SEG-D file types does it open?

Files with the extensions .sgd, .segd, .sd and .hd, one at a time or a whole directory as one record set. With Sync folder on, new records written into the directory during continuous shooting are added automatically.

Can g-Viewer convert SEG-D to SEG-Y?

Yes. Convert to Seg-Y writes the current record set into one SEG-Y file, skipping any records you excluded in the suspicious file list. g-Viewer can also save the records again as SEG-D format 8058, write a time-stamp CSV of FFID and record times, and save a SEG-Y file as SEG-D revision 2.

Is the SEG-D viewer free?

Every download starts with a 30-day full-functionality trial. After it, the free version opens SEG-D files under a free licence renewed annually, but shows only the first file in each list, has no projects, and keeps Add directory, Read headers all, Save Seg-D and the time-stamp file unavailable. A SEG-D licence unlocks the full SEG-D feature set; SEG-Y and LAS have licences of their own.

Does g-Viewer run on Mac and Linux?

Yes. g-Viewer runs on Windows 11 and higher (64-bit), on Linux (RHEL 8 to 10) and on macOS 26 and higher on Apple Silicon (ARM). The installer for your system is picked automatically on the download page.

Get started free

Field data in. SEG-Y out.

g-Viewer for Windows, Linux and macOS on Apple Silicon — a 30-day full trial, then free single-file viewing, with auto-update.

Download free Talk to Geomage