Geomatrix Earth Science Ltd

Geomatrix Earth Science Ltd

- Model DHA7 - Downhole Hydrophone Array


The Model DHA-7 downhole hydrophone array is designed for high-resolution seismic borehole imaging. Unique proprietary polymer hydrophones (no ceramics) are in-line moulded to a fully integrated, triple-sealed multi-conductor cable. Non-shattering polymer material provides superior performance and durability under the rigors of borehole applications and a stable signal response up to 10 kHz.


Image faults and fractures, stratigraphy, voids, mineral deposits, underground structures; determine soil, rock and reservoir properties

  • Ideal for shallow gas and mining investigations, earthquake engineering and foundation studies, teaching and research
  • Suited for high-resolution uphole, VSP, and crosshole surveys
  • State-of-the-art polymer hydrophones provide superior, stable response
  • Unique design isolates vibration and suppresses cable-related noise
  • Small diameter and light weight make for easy deployment
  • Reliably performs under the rigors of borehole applications

Technical Specifications:

The Model DHA-7 is suited for use in cased and uncased, water-filled, narrow-diameter boreholes. The standard configurations include a group interval of 0.5 to 5 m and a total cable length of up to 400 m (1,312 ft). The cable is terminated topside with suitable connectors to mate with the seismograph and a 12VDC rechargeable power supply. Custom group intervals and multi-borehole configurations are also available to tailor the system to meet your needs. The array is easily deployed by hand or with a small winch.

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