- Geotechnical investigation
- Overburden drilling including over consolidated clay
The Technidrill NQ, PQ and Geotech S Wireline series is a range of components which produces 47, 85 and 102 mm cores suitable for a wide range of geology and particularly clay, sand or loose weak formations .
It comprises of a stabiliser, support coupling, landing coupling, outer tube, extension tube, reaming shell and core bit into which fits a core barrel head, coreliner and core lifter. The core is recovered by lowering down a retrieval device (overshot) on a wireline cable which latches onto the inner tube assembly. This means that the whole drill rod string does not need to be removed after each drill run which saves a considerable amount of time. A non-coring version is also available.
Different types of lifters, reaming shells and core bits need to be selected according to geology and the method used
REGISTERED OFFICE: Geotechnical Centre, Rougham Industrial Estate, Rougham, Bury St Edmunds, Suffolk IP30 9ND. Registered in England: 2481929