GeoLayer  /  Borehole Log Digitiser

Extract SPT N-Values & RQD from Borehole Logs

SPT N-values and RQD (Rock Quality Designation) are buried in dense log columns and easy to mis-key. GeoLayer reads them straight from your borehole log PDFs — scanned, handwritten or digital — into a structured, editable table.

The test data, without the transcription

GeoLayer locates SPT N-values and RQD in the log layout the way an engineer reads it, then pulls them into clean rows alongside depth, strata and coordinates — ready to export.

Engineer-reviewed, not blindly trusted

Every value is reviewable and editable on screen before export, so your test data lands in a clean, defensible state instead of carrying transcription errors into analysis.

Reading test data by hand vs GeoLayer

By handGeoLayer
Finding SPT / RQD in dense columnsManual and easy to mis-readLocated by AI in the log layout
Errors into analysisTranscription errors propagateReviewed with confidence flags first
Captured alongsideOnly what you typedDepth, strata and coordinates too

Frequently asked questions

Can GeoLayer extract SPT N-values from a scanned log?

Yes. GeoLayer is built for scanned, photographed and handwritten borehole logs and extracts SPT N-values, RQD, depth and strata into a structured table.

See it on your own logs

Book a demo and we'll run GeoLayer on your borehole logs — scanned, handwritten or digital. Book a demo call.

Related: Borehole log to Excel · Borehole log to AGS4

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