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DNWW: Spectacular intercept with GST radar

Rotterdam, Netherlands

In March 2013, Visser & Smit Hanab | Drilling Technologies realised a spectacular drilling project in the densely populated city centre of Rotterdam. The project challenges included over 1,500 metres of drilling, an angular displacement of 60 degrees and a depth of 60 m below sea level.

Our engineers designed an innovative solution. To realise this, the 100-tonne drilling rig was set up on Wilhelmina Pier in the centre of Rotterdam, while the 450-tonne rig was set up on Brielselaan. Both drilling rigs drilled towards each other in an angular displacement of 60 degrees. At a distance of 1,000 meters from the 100-tonne drill, the 450- tonne drill rig intercepted the other bore head by using GST radar. By meeting in the middle, the pilot bore of 1,500 m was achieved.


After the reamers prepared the borehole for the DN 400 pipeline, this steel-in-steel pipe was easily withdrawn.


This drilling is part of the De Nieuwe Warmteweg project which concerns the design, construction and maintenance of a unique heating network in the Rotterdam region. Along a 26 km long route, residual heat generated by industry in the Rotterdam port is reused in local district heating networks.


Click HERE to see a time lapse movie of this project.

Click HERE to see a video/animation of this project.

Publications about the HDD project

In the April 2013 issue of the magazine Trenchless International published an article about this unique project. Click to read it.

Facts and figures

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