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Energy well drilling with W100 in Råcksta, Stockholm, Sweden

Drilling of 16 wells, 160 meter deep, for remote heating and cooling of the main office of Vattenfall AB at Råcksta outside Stockholm, March 1999. Contractor: Malmberg Borrning AB. Wassara W100 drilling system with its low energy consumption, high rate of penetration and minimal effects on the environment in the form of dust was the obvious choice.

Result:

A total of 2560 meters was drilled without any adverse effects for the inhabitants in the surrounding apartment blocks.

Equipment:

Hammer

Wassara W100

Bit

Sandvik 115 mm

Pump

Hammelman 210 bar, 320 liter/min

Drilling fluid

Clean water, no recirculation

Drill pipe

Wassara 3000 mm, 89 mm OD

Rig

Nemek 710

Formation

Granite with quartzite

Other

Wassara Swivel Stenberg 600