Downhole percussion drilling apparatus
作者： Nicu Valentin Cioceanu
DOI:
关键词: Inclined plane 、 Drop (liquid) 、 Drilling 、 Mechanical engineering 、 Percussion 、 Structural engineering 、 Engineering
摘要: A downhole percussion drilling apparatus includes a housing and piston rotatably supported within an interior bore of the housing. first engagement surface serves as cam surface. second follower The has plurality inclined planes each which terminates in drop off. With rotation piston, rises up then falls down offs thereby imparting series percussive hammering impacts to piston.
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