Method of interconnecting a drill rod with a drill string by means of a threaded connection, rod handling system and drill rig
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United States of America Patent
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Aug 29, 2017
Grant Date -
Jul 30, 2015
app pub date -
Sep 6, 2013
filing date -
Sep 26, 2012
priority date (Note) -
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Abstract
A method of interconnecting a drill rod with a drill string by a threaded connection is disclosed. The method includes axially aligning the drill rod with the drill string, rotating the drill rod in a disengagement rotational direction of the threaded connection, identifying a rotational position of the drill rod where thread ends of the rod and the drill string slip over each other, stopping the rotating within a predetermined period of identifying the rotational position, and rotating the drill rod in an engagement direction, such that the drill rod is interconnected with the drill string by the threaded connection.
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