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Drilling deep holes with Wassara

Long straight holes

When drilling several long holes, minimised borehole deviation is crucial as the holes might collide otherwise. Wassara has proven its capability to drill long straight holes that are not affected by the water table. The ability to drill fewer holes to larger depths is also one of the advantages of the water-powered drilling technology – especially in restricted areas where space is limited.

Drills through different formations

Drilling in areas with layers of different formations can be tricky. Dense clay is one of the more troublesome formations for conventional equipment to handle, while Wassara penetrates it with maintained speed and straightness. The water-powered DTH hammer is capable of penetrating any formation.

Efficient and secure in water rich formations

To drill in water rich formations with air-powered equipment is hazardous; the air wants to push the water to the surface. This gives far reduced, if any, drilling efficiency. With Wassara, water in the formation is not a problem. The surrounding water will not affect the drilling at all. Nor does the drilling affect the water in the formation.

 

Example of successful projects:

Geothermal energy in Kristallen, new office building in Lund

Geothermal energy, extracted from forty 170 m (573 ft.) deep boreholes, is being used to heat and cool the newly constructed 11 000 m3 municipal office in the city of Lund in southern Sweden. The formation includes both soft and hard layers of rock.

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Drilling for geothermal heating when building a new hotel center in Malmö, Sweden

The new concert, congress and hotel centre Malmö Live is designed to meet the toughest demands for environmental friendliness. Initially the drilling for geothermal heating was performed with airpowered DTH hammer and large amount of water was being pumped up from the ground and caused problems.

Read the full version here!