Eccentric Overburden Bit
ODEX/Eccentric midziyo inoita kuti iwe ugone kuchera uye kuisa makomba akadzika panguva imwe chete mumhando dzese dzemaumbirwo, kunyangwe ayo ane matombo makuru.
Iyo nzira yakavakirwa pane pilot bit uye eccentric reamer, iyo pamwe chete inoboora gomba rakati kurei pane yekunze dhayamita yecasing chubhu.Izvi zvinoita kuti casing chubhu itevere chibooreso ichidzika negomba.
Paunenge uchishandisa ODEX, chikamu chesimba rekuita chinotsaurirwa kune casing chubhu kuburikidza nepfudzi pane yegiyadhi mudziyo, iyo inozokanganisa yakakosha casing shangu kumucheto kwezasi kwecasing.
| Type | Casing Tube OD(mm) | Casing Tube ID(mm) | Ukobvu hwemadziro (mm) | Tungamira mudziyo mukuru saizi(mm) | Remed Dia (mm) | Casing shoe mini Dia(mm) | Pilot bit D (mm) | Hammer type |
| ODEX85 | 108 | 94 | 7 | 92 | 117 | 86 | 85 | COP34/DHD3.5 |
| ODEX90 | 114 | 101 | 6.5 | 99 | 125 | 92 | 90 | COP34/DHD3.5 |
| ODEX98 | 127 | 109 | 9 | 107 | 138 | 100 | 98 | COP34/DHD3.5 |
| ODEX115 | 146 | 126 | 10 | 123.5 | 155 | 117 | 115 | COP44/DHD340/SD4/QL40 |
| ODEX140 | 168 | 148 | 10 | 146 | 180 | 138 | 136 | COP54/DHD350/SD5/QL50 |
| ODEX145 | 178 | 158 | 10 | 156 | 192 | 147 | 145 | COP54/DHD350/SD5/QL50 |
| ODEX152 | 183 | 163 | 10 | 161 | 196 | 153 | 151 | COP54/DHD350/SD5/QL50 COP64/DHD360/SD6/QL60 |
| ODEX165 | 194 | 174 | 10 | 172 | 206 | 162 | 160 | COP64/DHD360/SD6/QL60 |
| ODEX190 | 219 | 199 | 10 | 196 | 234 | 187 | 185 | COP64/DHD360/SD6/QL60 |
| ODEX208 | 245 | 225 | 10 | 222 | 263 | 210 | 208 | COP84/DHD380/SD8/QL80 |
| ODEX240 | 273 | 253 | 10 | 251 | 305 | 241 | 240 | COP84/DHD380/SD8/QL80 |
| ODEX280 | 325 | 300 | 12.5 | 298 | 350 | 282 | 280 | DHD112/DHD38 |
