In Markelo, we carried out a special directional drilling project, an intersect drilling of approximately 985 metres beneath the village centre. Two drilling rigs were used for this project, a 150-tonne and a 45-tonne drilling machine, which drilled towards each other from two different locations.
The aim of the project was to construct a new electricity connection that would contribute to the expansion of the regional energy grid. By carrying out the drilling without trenches, the route could be constructed under the centre of Markelo without major work on the surface.
Technical challenge
What makes this project special is the chosen intersection method. In this method, the drilling route is not carried out from one side, but from two sides simultaneously. Both drilling teams work precisely towards the same point underground.
This requires very precise preparation, good communication between the drilling teams and extremely accurate control of the drill. Over a length of almost one kilometre, both drillings must connect exactly. Even small deviations can have major consequences.
Thanks to the experience of the drilling teams and the use of modern measuring and control systems, we succeeded in connecting both drill holes perfectly, a great technical achievement of which we are very proud.
Minimal impact on the environment
Horizontal directional drilling makes it possible to lay cables and pipes without digging large trenches. This means that roads, buildings and other infrastructure can remain intact and disruption to the surrounding area is kept to a minimum.
In a village such as Markelo, where the route runs under the village centre, this is a major advantage. Most of the work takes place underground, while above ground, daily life continues as normal. With this successful intersect drilling, we are contributing to the reinforcement of the electricity grid in the region and demonstrating once again that even technically complex drilling operations can be carried out reliably.