Lubrication system for a drilling apparatus
作者： Edgar John Banner
DOI:
关键词: Drilling 、 Working fluid 、 Drill string 、 Marine engineering 、 Drill bit 、 Geology 、 Petroleum engineering 、 Lubrication
摘要: The present invention provides a lubrication system for drilling apparatus. apparatus includes drill string and bit, it is driven by working fluid circulated through circuit. uses reservoir of lubricating supply to during operation; pump supplying from said the operation. controlled at determined rate circuit formed
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