Sludging - Rota sludge

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Drilling a 20 m deep well in Chinandega, Nicaragua, with the Rota-sludge method


The Rota-sludge method is an adaptation of the Indian hand sludge method. The hardened drill bit is turned 90 degrees during drilling thus chiselling the bottom of the hole. This technology can be used to drill 2-5 inch wells in layers with sand, clay, gravel, tuff stone or weathered rock.


History and social context

Suitable conditions

Advantages Disadvantages/limitations
- Can drill in hard soil


Technical specification

Operation

Maintenance

Manufacturing

Capacity

2-5 inch wells to 20 meter.

Costs

In India, the cost of a well made with Rota-sludge is about US$ 30. In Nicaragua, this varies from US$ 80 to US$ 400.

The cost of introduction varies between US$ 5,000-20,000 per project, including hand-on training, drill set and drilling of test wells.

Applying conditions

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Rota Sludge Manual

Movie

External links