ODEX is an excellent option when unconsolidated formations are too dense or cobbly for Auger Drilling. ODEX is a down-hole air hammer system that is designed to advance casing during drilling. Once a desired depth is reached they eccentric bit can be retrievedleaving the casing in place for sampling or installations.
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
Eccentric Overburden Drilling System Consist of Guide device, Casing shoe, Reamer, Pilot bit, Guide sleeve and Locking kits.
ODEX overburden drilling systems specifications:
| ODEX90 | ODEX115 | ODEX140 | ODEX165 | ODEX190 | ODEX240 | ODEX280 | |
| Casing tube Maximun O.D. | 115mm | 142mm | 171mm | 195mm | 222mm | 273mm | 324mm |
| Casing tube Minimum I. D. | 102mm | 128mm | 156mm | 183mm | 205mm | 261mm | 305mm |
| Drill pipe connection thread | API 2 3/8" Reg | API 2 3/8" Reg | API 2 3/8" Reg | API 3 1/2" Reg | API 3 1/2" Reg | API 3 1/2" Reg | API4 1/2" Reg |
| Drill pipe O.D | 76mm | 76mm | 89mm | 114mm | 114mm | 114mm | 114mm |
| Drill pipe wrench flats | 65mm | 65mm | 65mm | 95mm | 95mm | 95mm | 95mm |
| Guide sleeve effective length | 174mm | 174mm | 205mm | 225mm | 285mm | 343mm | 305mm |
| DTH hammer model | COP32 IR3.5 QL30 M30 | COP44 SD4 DHD340 QL40 M40 | COP54 SD5 DHD350 QL50 M50 | COP64 SD6 DHD360 QL60 M60 | COP64 SD6 DHD360 QL60, M60 | COP84 SD8 DHD380 QL80 | SD10, Numa100 |
