Airgun source QC, live from SEG‑D

Decodes shots as they land: firing time, pressure, depth, far field and ghost-notch depth, and an End of Line report at the end of every line.

End of Line report heat map: one gun's timing drifts toward its limit and breaks it, the only cells drawn red.
End of Line report · red only where a gun broke its limit

Windows

Windows 10 / 11 · 64-bit

Coming soon

macOS

Apple silicon (M1 or later) · v2.26.3 · 346.8 MB

Download

SHA-256 2e2c52025bd412ecae5ed2e46a487d218b5d4969cb026f07547f93e0370963d6

First start: macOS will not open an app it cannot check. Try once, then System Settings → Privacy & Security → Open Anyway.

Linux

x86_64

Coming soon

Current version: v2.26.3 · check the SHA-256 checksum after downloading · older versions on request

See it at work

The interface on a line being shot, and the reports it writes - every picture from the app itself, on synthetic demo data.

  • The main cross-correlation screen while monitoring: three sources of 24 channels, one channel pale and weak, one run of shots in red.
    Cross-correlation screen Every channel of every shot against the reference, per source: a weak hydrophone reads as a stripe, a bad shot as a column.
  • The live graphs window: every gun's depth along the line against its tolerance band, with one gun drifting deep and another dipping shallow.
    Live gun QC Depth, timing and pressure of every gun, shot by shot, against the limits written in the SEG‑D header.
  • The Source Array Designer: four sub-arrays of clustered guns drawn on a canvas, with the array and navigation-mask settings beside them.
    Source Array Designer Draw arrays, sub-arrays and clusters; the navigation masks are worked out from the drawing.
  • The SP Quality window: one track per source along the shot points, red spans where the spec was broken and green spans where it held.
    SP Quality The contract spec check per source: where the line went out of spec, and which shot-point ranges are acceptable.
  • The line database window: volume fired per source against the ideal volume, and the peak-to-bubble ratio of each source along the line.
    Line database Volume delivered and P/B ratio of every source along the line, straight from the project database.
  • Two pages of an End of Line report: the cover with its verdict and list of findings, and timing heat maps where one gun drifts into red.
    End of Line report Every finding on the cover; timing, depth and pressure as gun heat maps, red only where a limit broke.
  • Two far-field report pages: peak-to-peak and zero-to-peak levels of three sources along the line, and the median signature with its spectrum.
    Far-field signature Peak-to-peak and zero-to-peak along the line, and the median signature with its amplitude spectrum.
  • Two report pages: hydrophone heat maps in blue and amber against each hydrophone's median, and a gun depth heat map with one excursion in red.
    Hydrophone QC Every hydrophone of the active guns against its own line median, beside the gun depth map.
  • Two pages of a Bubble Test report: the summary with one failed gun, and per-gun charts of measured and computed bubble periods.
    Bubble Test report Measured against computed bubble period for every gun, with a pass or fail for each.

Free three-month licence

Every feature, on one machine. Renew it every three months for up to a year; after that, contact us for a full licence.

  1. Install SEG‑D Monitor v2.26.3 or later, and open it.
  2. Copy your machine ID from 🔑 License - or click Get a free licence online there.
  3. Get your licence here, then 🔑 License → Load License File…

Three months at a time, up to 12 months per machine. Your details are kept only to know who uses the software; no emails are sent.

Manuals

User ManualPDF · v2.26.3 · 9.5 MB Far-Field GuidePDF · v2.26.3 · 1.6 MB

What's new

Version 2.26.3

  • The free licence is three months long, not one, and is renewed on this page in its last week. It needs this version: an earlier one refuses a licence longer than a month.
  • Automatic mode (SEG-D folder panel). A line is stopped after a quiet time, its End of Line report is made with no questions asked, and the next line folder is started by itself - its direction read from the shot points in its first files. Comments can be added to a report afterwards, also while the next line is being recorded.
  • Watch your neighbours (Display → 👁 Neighbours). When a hydrophone stays at or below the colour-scale minimum, the hydrophones next to it are checked. If they changed too, the area is outlined on the similarity heat map, AIRLEAK sounds in Morse and the area steams until it is answered: Noticed or Ignore.
  • Three layouts for the main window (Setup → Layout): Classic, Rail and Focus, and a command palette on Ctrl K with every tool by name.
  • The live graphs have a heat-map view - one row per gun, one column per shot point, red only where a reading is outside its limits.
  • A line can be marked not to be processed (NTBP) with a reason, in the End of Line report's comments box; the report's cover says so.
  • A welcome screen at start-up: continue the last project with Enter, or pick a recent one.