Ivelisa i-ODEX Eccentric Overburden Drilling System, iqala nge-ODEX90 ukuze ihambelane ne-114mm OD casings.Le nkqubo ineziqwenga ezibini iquka isibambi se-shank bit kunye ne-eccentric pilot bit ekhuselwe kwisibambi sesuntswana ngephini lokudityaniswa kabini.Oku kususwa ngokulula ukuze kuvumeleke ukulolwa kwebit okanye ukutshintshwa.Iinkqubo zokugrumba i-JCDRILL ODEX zisetyenziswa ngokubanzi kwiintlobo ngeentlobo zezicelo ukusuka ekugrunjweni kwamaqula kunye nokwembiwa kwemigodi ukuya kwi-ankile yamatye kunye nophando lwesiza.