Difference between revisions of "Groundwater - Stone hammer well drilling"
m (Add NOTOC tag) |
|||
| Line 31: | Line 31: | ||
<b>Cost of introduction:</b> Variable US$ 15,000 - 30,000 per project, including: production drill set, drawings, hands-on training, first wells. | <b>Cost of introduction:</b> Variable US$ 15,000 - 30,000 per project, including: production drill set, drawings, hands-on training, first wells. | ||
| + | |||
| + | ==Stone Hammer Drilling Manual== | ||
| + | |||
| + | PRACTICA foundation and ETC Energy have put together a manual on the Rota Sludge & Stone Hammer drilling: [http://www.connectinternational.nl/files/Rota%20sludge%20and%20stonehammer%20drilling.pdf Volume I Drilling Manual], [http://www.practicafoundation.nl/wp-content/uploads/PDF/practica-production-rs-versie-1th-september-051.pdf Volume II Production Manual] | ||
== External links == | == External links == | ||
* [http://www.worldbank.org www.worldbank.org ] | * [http://www.worldbank.org www.worldbank.org ] | ||
* [http://www.practicafoundation.nl www.practicafoundation.nl ] | * [http://www.practicafoundation.nl www.practicafoundation.nl ] | ||
Revision as of 14:16, 4 August 2008
The previous drilling methods are not suitable for hard soil formations, so ongoing development led to the Stone-hammer. This method consists of a heavy hammer hitting directly on a hollow drill-head. Although it does not penetrate very hard stone such as basalt, it is a tougher option than the Rota-sludge method. This technology is being refined further in India and Nicaragua.
The Stone-hammer method has won a competition for innovative irrigation technologies organized by the World Bank, Winrock and IDE (International Development Enterprises).
| Advantages | Disadvantages |
|---|---|
| Cheaper and easier to maintain than motorized drilling rigs. Drill in very hard soil |
Slower than motorized drilling rigs. |
Capacity
2-5 inch wells to 40 meter.
Costs
20-60% less then hand dug wells.
Applying conditions
Cost of introduction: Variable US$ 15,000 - 30,000 per project, including: production drill set, drawings, hands-on training, first wells.
Stone Hammer Drilling Manual
PRACTICA foundation and ETC Energy have put together a manual on the Rota Sludge & Stone Hammer drilling: Volume I Drilling Manual, Volume II Production Manual
