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Waterra 3-part well slugs For permeability testing in boreholes

PR30

Waterra 3-part well slugs provide a convient fixed volume cylindrical solid for performing instantaneous rising or falling head permeability tests in boreholes.

Waterra well slugs are supplied in 3 parts to simplify storage and transport. They are manufactured from 3 solid cylinders of Delrin with threaded connections to allow 1, 2 or all 3 sections to be used. Two standard sizes are available specifically for use in 50mm and 100mm diameter wells. Each size will achieve an approximate 1m change in water level within the borehole lining. Variable head permeability tests Slug tests are a convenient and well established means of determining permeability (hydraulic conductivity) in narrow diameter boreholes. Tests are carried out by instantaneously lowering or retrieving a solid cylinder of known volume within the borehole water column and recording the rate of water level recovery. Use in conjunction with the Levelogger for accurate recording of water level changes during slug test. Leveloggers can record water levels at intervals of 0.5 seconds, enabling detailed data collection not possible using a manual water level dipmeter.

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Waterra (UK) Ltd, Unit 4, 179-189 Stratford Road, Shirley, Solihull B90 3AU, UK Tel: +44 (0)121 733 7743 Fax: +44 (0)121 733 7746 email: sales@WaterraUK.com

www.WaterraUK.com