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Sistemụ mkpọpu ihe karịrị oke ibu Reamer Bit, Overburden Reamer
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Akụrụngwa na-ebufe ihe na-eme ka Wing Block na-ebufe ibu dị arọ maka mkpọpu oghere nke Dth Reaming Hole.
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Akụrụngwa na-ebufe ihe na-eme ka Wing Block na-ebufe ibu dị arọ maka mkpọpu oghere nke Dth Reaming Hole.
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Ụlọ ọrụ mmepụta ihe dị elu nke siri ike na-egwupụta ihe na-ebufe ibu ibu
