Foundation and reinforcement work under water with Wassara
In maritime projects, like drilling in harbours, the Wassara technique offers superior efficiency compared to conventional drilling methods. The capacity is falling quickly when drilling with air-powered DTH hammer. With Wassara the capacity and speed is maintained during the whole operation, the surrounding water does not affect the drilling.
No oil in the water
Another benefit with the Wassara technique is that it uses no oil, which eliminates the risk of any oil polluting the water. This is often a strict requirement when drilling in maritime areas.
Minimised risk of pressurising the formation
The likelihood of pressurising the formation is very low with Wassara. This is always a risk when drilling with air-powered DTH equipment. Cracks and cavities in the formation will be at risk of expanding drastically with the expanding air.