Downhole Surveys

Downhole Surveys are a leading provider of high precision rental equipment to the Australian, and global, mining and civil engineering industries. Specialising in directional surveying and drill hole deviation, Downhole Surveys have spent over 30 years researching, developing and perfecting the extensive range of products, software and operating procedures offered to our clients today.

Devico are a supplier and manufacturer of directional core drilling services and borehole surveying solutions. With headquarters in Norway and a worldwide agent network, Devico’s services and products are accessible across the globe.


Downhole Surveys are the proud exclusive Australian distributors for Devico survey instrumentation, extending our supply reach to New Zealand and Papua New Guinea.

Downhole Surveys Are The Exclusive Australian Distributors For Devico Products.

By combining the latest innovations in downhole surveying technology with exceptional customer service, Downhole Surveys provides its customers with absolute precision on every survey campaign.

  • Downhole survey instrumentation

  • Production hole quality control (PHQC)

  • Drill rig alignment devices

  • Core orientation systems

  • Wireline depth counters

  • Survey data validation

Onsite or Remote Setup & Training

Around-the-clock Technical Support

Data Quality Assurance and Validation


Cutting edge equipment and the best service we’ve ever had.

Geoff Muir – Managing Director, Australian Underground Drilling


I have used a majority of tools on the market and I can easily say this (DeviGyro OX) is the most up to date and user friendly at the moment. My Drillers have only given positive feedback and the support that I’m receiving from DHS has been great.

Dale Mora – Supervisor

Latest News

Downhole Surveys Production Hole Quality Control Report: Why Routine Measurement is Key to Blasting Efficiency

Over 100,000m surveyed across 30 mine sites, our study develops insight into how hole diameter, depth, setup error and rig type could have an impact on in-hole deviation.

Download Report Now

Learn more about our production hole quality control system

Our DeviGyro production hole survey system enables continuous manual surveying of blast holes in all angles:

  • DeviGyro RG30: Miniature rate gyro sensor and lightweight running gear
  • DeviRodder: Fibreglass rodder with depth encoder for continuous in/out surveying
  • DeviAligner: High precision fibre optic gyro for collar pickup and starting direction
PHQC Report
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