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Sludging - Rota sludge

37 bytes added, 03:50, 31 July 2012
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The Rota-Sludge was developed by the [http://www.practicafoundation.nl/products/drilling-wells/ Practica Foundation].
==Suitable conditions ==
Suitable for unconsolidated formations: Sand, silt and clay. Because of the rotation and the drill bit, it is possible to penetrate softer-consolidated formations such as stiff clays, soft sandstone, and weathered laterite.
==Construction, operations and maintenance==
[[Image:Diagram of a rota sludge.jpg|thumb|right|250px|Diagram of a rota sludge]]
[[Image:Rota_sludge_well_drilling.PNG|thumb|right|250px|Drilling a 20 m deep well in Chinandega, Nicaragua, with the Rota-sludge method . Photo: Netherlands Water Partnership.]]
[[Image:Rota sludge drill bit.jpg|thumb|right|250px|Rota sludge drill bit]]
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