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Sludging - Rota sludge

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[[Image:Icon_sludge.png|right|80px]]

[[Image:Rota sludge in action.jpg|thumb|right|200px|Rota sludge in action]]

[[Image:Deep drilling with the rota sludge.jpg|thumb|right|200px|Deep drilling with the rota sludge]]

__NOTOC__ <small-title />

The Rota Sludge is a manual drilling technique based on the [[Sludging - Asian sludge |Asian sludge]] technique, and adapted for harder soil types. To drill through the harder layers, a hardened drill bit and weight have been added. Just after the downward movement of the drill pipes the drill bit is rotated a quarter turn, thus chiselling the bottom of the hole. Water is circulated to bring the cuttings to the surface.

===Manuals, videos and links===

* Arjen van der Wal & Robert Vuik, [http://www.practica.org/wp-content/uploads/services/publications/drilling%20manuals/EN/sludging%20_final%20version_lr%20310811%20full%20ENG.pdf Sludging: Manual Drilling Series. Technical Training Handbook on Affordable Manual Well Drilling]. Practica Foundation, June 2011 (2nd edition). French version: [http://www.practica.org/wp-content/uploads/services/publications/drilling%20manuals/FR/sludging_final%20version-lr%20310811%20full%20FR.pdf FORAGE A LA BOUE : Serie forage manuel]. *[http://ec.europa.eu/echo/files/evaluation/watsan2005/annex_files/PRACTICA/PRACT2%20-%20Rota-sludge%20and%20stone%20hammer%20drilling.pdf Rota-sludge and stone hammer drilling, Part 1, Drilling manual]. Produced by [http://www.practicafoundationpractica.nl org PRACTICA Foundation] and [http://www.etc-international.org/index.php?id=41 ETC Foundation].

*[http://www.sswm.info/sites/default/files/reference_attachments/HERWIJNEN%202005%20Rota%20Sludge%20and%20Stone%20Hammer%20Drilling%20Part%20two%20Production%20Manual.pdf Rota-sludge and stone hammer drilling, Part 2, Production manual]. Produced by [http://www.practicafoundationpractica.nl org PRACTICA Foundation] and [http://www.etc-international.org/index.php?id=41 ETC Foundation].

* [http://www.practica.org/products/drilling-wells/ Drilling & Wells], Practica Foundation.

 

* General info on manual well drilling [http://www.rwsn.ch/prarticle.2005-10-25.9856177177/prarticle.2005-10-26.7220595116/prarticle.2005-11-15.6127855822 Rural Water Supply Network]

=== Acknowledgements===

* The basis for the material on this page was obtained from a desk study shortly to be published on the website of the [http://www.practicafoundationpractica.nl/ org Practica Foundation], and from the [http://www.rural-water-supply.net/ Rural Water Supply Network], and specifically its [http://www.rural-water-supply.net/en/implementation/manual-drilling manual drilling section].

* [http://www.lboro.ac.uk/well/resources/technical-briefs/43-simple-drilling-methods.pdf 43. Simple drilling methods.] WEDC.

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