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>Geotechnical and Geophysical Data

Geotechnical and Geophysical Data

Need Geotechnical or Geophysical data?

  • GeoChirp 3D Surveys
  • Generation of Isopach layers
  • Cone Penetration Tests
  • Coring
  • Multi-Channel Boomer
  • Single Channel Chirp/Pinger
 

GeoChirp 3D Surveys

Need high resolution image of the sub-surface (<10m)?

The PLA can acquire a 3D CHIRP survey.

Benefits:

  • A subsurface image with 12.5 (or 25cm) horizontal resolution
  • The acquisition of GeoChirp 3D data will open opens up for extraction of geophysical properties and object detections.

Deliverables:

  • Report
  • Geotiff of GeoChirp 3D Coverage
  • Processed 3D SEG-Y files (NMO and migrated).

 

 

 

Generation of Isopach layers

Need know the depth to a sub-surface layer to de-risk engineering design?

The PLA extract geophysical horizons from 2D and 3D seismic data.

Benefits:

  • Allow accurate calculation of required pile depth
  • Reduce the risk of surprises during the construction phase

Deliverables:

  • XYZ isopach layer of the top sediment boundary
  • Geotiff of GeoChirp 3D Coverage
  • Processed 3D SEG-Y files.

 

 

 

 

 

 

 

 

Cone Penetration Tests

Need to know the strength of subsurface material for engineering works?

The PLA can conduct Cone Penetration Tests using a coiled tube CPT unit.

Benefits:

  • Deployed from vessel
  • Reduced risk for engineering works

Deliverables:

  • Report
  • CPT data is converted in AGS format and interpreted logs produced.

 

 

Coring

Need to obtain a subsurface core for analysis?

The PLA can acquire cores using a VibroCorer unit.

Benefits:

  • Deployed from vessel

Deliverables:

  • Report
  • Cores

 

 

 

 

Multi-Channel Boomer

Need to image the subsurface to 10s of meters?

The PLA can acquire a 2D seismic profile using a multi-channel boomer system.

Benefits

  • 10s of meters imaged (dependant on sediments)
  • True depth imaging, derivation of ground model with attenuation and velocity calculations

Deliverables

  • Report
  • Processed 2D SEG-Y files (NMO and Migrated)
  • True depth imaging (optional)
  • Ground modelling with velocity and attenuation (optional)

 

 

 

Single Channel Chirp/Pinger

Need a 2D image the subsurface to <10  meters?

The PLA can acquire a 2D seismic profile using a single channel Chirp or Pinger system.

Benefits

  • Penetration  to  ~10m  (or approximately water depth due multiple)
  • High frequency (16kHz+) giving high resolution

Deliverables

  • Report
  • Processed 2D SEG-Y files
  • Stratigraphic interpretation

 

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