Eccentric Overburden Drilling Casing System no ka wili luawai

Hoʻopuka i ka ODEX Eccentric Overburden Drilling System, e hoʻomaka me ka ODEX90 e kūpono i nā pahu 114mm OD.Aia kēia ʻōnaehana ʻāpana ʻelua i ka mea hoʻopaʻa bit shank a me ka bit pilot eccentric i hoʻopaʻa ʻia i loko o ka mea hoʻopaʻa bit e kahi pine pili pālua.Hoʻopau maʻalahi kēia no ka ʻae ʻana i ka hoʻokala a i ʻole ke pani ʻana.Hoʻohana nui ʻia nā ʻōnaehana hoʻoheheʻe overburden ʻo JCDRILL ODEX i nā ʻano noi like ʻole mai ka wili luawai a me ka ʻeli ʻana a hiki i ka heleuma pōhaku a me ka noiʻi pūnaewele.