Rotational set well packer device
作者： Harold Clifton
DOI:
关键词: Set (abstract data type) 、 Low friction 、 Clockwise 、 Engineering drawing 、 Rotation 、 Mechanical engineering 、 Engineering
摘要: A packer apparatus that is set with low friction counter-clockwise rotation, and unset clockwise rotation. drain valve opened concurrently as the closed set. The Packer requires a minimum of parts designed to be used in corrosive environments.
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