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Phillpps F.,SADE Forages Raphael Delattre | Dutholt B.,SADE Forages Raphael Delattre | Eau V.,SADE Forages Raphael Delattre | Droz B.,SADE Forages Raphael Delattre
Eau, l'INDUSTRIE, les Nuisances | Year: 2011

The Syndicat Intercommunal of Region Ambleteuse has 2 production facilities of drinking water: 2 wells at the Mendelle and 3 at Slack location. Since 2007, these sites showed worrying signs of loss of production and a diagnostic, practised in 2009, showed a sharp drop in productivity. The situation of two sites in the coastal zone in a protected area, has led to propose a treatment without chemical products conventionally used in case of clogging. The innovative Air-Shock is to send loads of compressed gas into the borehole to unclog. This technique has enabled a destabilization of the crusts, compaction of gravel and solid waste disposal may cause siltatkm of wells-After cleaning of the foam drilling, the pumping test were performed. The results were very conclusive: higher speeds and lower drawdown.

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