Sollroc concentric system

Futures: Rapid removal of cuttings; High penetration rate, especially in resistant rock formation; Easy soil and groundwater sampling during drilling; Possible to measure yield estimate at selected depth in the formation; Advantageous in unconsolidated formations with a high risk of caving. ODEX90-ODEX320 Symmetric Casing Drilling System 108mm-406mm Concentric casing system with block, with wings 168mm-508mm