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Achievers Geotechnical ServicesACHIEVERSGEOTECHNICAL SERVICES
Drilling rig extending an existing borehole

Maintenance & Upgrades

Borehole Extension

Deepening an existing borehole to reach a stronger water-bearing zone and restore reliable supply.

Where a borehole was drilled too shallow, or the water level has dropped, extending the existing hole can be more practical than starting again.

We assess whether the current borehole is structurally sound enough to deepen, then extend it to reach a more productive zone.

Extension is followed by re-casing where required, development and testing so the well returns to dependable service.

Who this is for

  • Boreholes that run dry during the dry season
  • Shallow wells with insufficient yield for current demand
  • Properties that have increased water demand since drilling
  • Farms and industries needing higher abstraction

Our process

How the work is done

  1. 1

    Condition assessment

    We confirm the existing hole can be safely deepened.

  2. 2

    Extension drilling

    The borehole is advanced towards a stronger zone.

  3. 3

    Casing adjustment

    Additional casing and screening are set as required.

  4. 4

    Development and testing

    The well is flushed, developed and tested for improved yield.

FAQ

Borehole Extension questions

Request a site assessment

Ready to develop a dependable water source?

Tell us about your site and what you need the water for. We will advise on survey, depth and the most practical approach before any drilling begins.